Microstructured Porous Silica Obtained via Colloidal Crystal Templates
|
|
- Nickolas Parsons
- 5 years ago
- Views:
Transcription
1 Paper No. 203e Microstructured Porous Silica Obtained via Colloidal Crystal Templates O. D. Velev, T. A. Jede, R. F. Lobo and A. M. Lenhoff Department of Chemical Engineering, University of Delaware, Newark DE Prepared for Presentation at 1998 Annual AIChE Meeting: Session Nanostructured Materials Copyright Velev, Jede, Lobo and Lenhoff Date 09/1998 AIChE shall not be responsible for statements or opinions contained in papers or printed in its publications. This paper and updates can be downloaded from:
2 Abstract A novel scheme for using modified colloidal crystals as templates for silica polymerization is reported. By this method we were able to obtain highly structured silica materials of which the pore size, shape and ordering can be precisely controlled in a wide region that has been previously unattainable. 3D close-packed crystals of submicrometer latex microspheres are assembled on a membrane surface by filtration and serve as templates for the silica polymerization. To initiate polymerization, the surfaces of the assembled particles are functionalized by adsorption of cationic surfactant. The colloidal crystals are then infused with silica solution, which polymerizes in the cavities. Because of the in situ functionalization, the method is not sensitive to the surface properties of the particles used in the crystal assembly; this was demonstrated by using both positively and negatively charged latexes. In the final step, the latex particles are removed by heating, leaving behind porous silica of very low density. SEM observations demonstrate that the product has highly uniform pores ordered in hexagonal and square lattices, representing a negative replica of the original colloidal crystal. The porosity of the material estimated by TGA is near that of close-packed spherical cavities (74%). The size of the pores can be controlled by changing the size of the microspheres used, and we were able to obtain samples with pore diameters ranging from 180 to 1000 nm. The method appears inexpensive and controllable, and could be adapted for large-scale production. Its future development holds promise for the formation of advanced new materials with unique properties, which can find application in catalysis, separations, coatings, microelectronics and electro-optics. 2
3 1. Introduction Porous silicas of different types have great potential in applications like catalysis, separations, environmental technologies, sensors, membranes, etc. The most commonly studied mesoporous materials today are the M41S types of silica formed by using surfactant micelles and liquid crystals as templates (1-3). Although these materials are easily fabricated, the pore diameters are typically limited to less than 10 nm. The formation of inorganic materials with uniform pores of arbitrary size, shape and orientation remains a challenge, and therefore there is significant interest in the development of methods using other templates that can yield silica with different pore sizes and morphologies. In a separate line of research, colloidal crystals have been a subject of intense investigation, as their formation and properties reveal some of the basic interactions in the microscopic world (4). The ordered arrays of particles have remarkable optical properties and much effort has been directed to turning them into usable solid-state materials. The results of this effort have been quite modest so far, not least because of the poor mechanical properties of the materials obtained. In this paper, we present a method by which the structure of the colloidal crystals is replicated into the stable matrix of solid polymerized silica. This method produces highly structured silica of which the pore size, shape and ordering can be precisely controlled in a wide region that has been previously unattainable (5,6). 2. Experimental A schematic presentation of the method is shown in Figure 1. The diluted latex particles are assembled into a colloidal crystal by slow filtration through a smooth membrane with narrow pores. Monodisperse suspensions of amidine (positively charged) or sulfate (negatively charged) latexes from IDC (USA) were used. The latexes were diluted with deionized water or with HTAB solution to 0.1 vol% and then filtered for 2 hours through polycarbonate membranes with pore size of 0.1 µm. The use of a membrane support allows easy functionalization and mineralization of the crystal, as the corresponding liquids are simply washed through the ordered layers. 3
4 Figure 1. Schematic illustration of the stages of the synthesis method. To functionalize the surfaces of the microspheres to a state where they can serve as nuclei for silica polymerization, the latex layer was washed with HTAB solution for 20 min. The in situ treatment by cationic surfactant makes the method insensitive to the type of the latex used we have proven this by using both positively and negatively charged microspheres as templates. On the other hand, if this step is omitted, the silica polymerization is not successful and the material collapses on calcination. The mineralization of the cavities between the particles was carried out by infusion with 0.5 M aqueous solution of Si(OH) 4. The latex/silica composites were then dried in a vacuum oven for 30 mins at 50 o C and then heated in a programmable furnace for 4 h at 450 o C. The 4
5 organic components of the material were burned out during the calcination, leaving behind silica flakes of very low density. The results of the observation and characterization presented below demonstrate that the material comprises highly uniform and ordered pores. The samples were studied by optical microscopy in transmitted illumination, SEM, and TGA analysis. 3. Results and Discussion The final products of the calcination were off-white silica flakes of very low density. Investigation of the flakes by optical microscopy showed them to be highly porous, though the discrete structure of the material was below the resolution of the microscope. The discrete morphology of the material could, however, be observed by SEM along cracks and abrasions on the surfaces of the flakes. Large 3D ordered arrays of spherical cavities that obviously represented a negative replica of the original colloidal crystal embedded in the silica were observed (Figure 2). A unique feature of the materials obtained that can eventually make them usable in high technology applications is the long-range ordering of the uniformly sized pores. In the case of nm particles, we have observed ordered domains of almost perfect hexagonal or square lattices including more than 10 3 pores of identical size in the first visible layer. Figure 2. SEM of representative sample of microstructured silica prepared with a 560 nm amidine latex. 5
6 One of the biggest advantages of the proposed method is the ability to control easily the dimensions of the pores obtained by varying the size of the latex beads in the templates. By using different suspensions of latex microspheres we have been able to obtain organized materials with pore sizes ranging from ca. 150 nm to 1 µm. Examples of the materials prepared with the smallest and the biggest particles used are shown in Figure 3. Figure 3. Examples of how the size of the pores can be tuned by changing the original latex suspension: (a) Sample obtained from 190 nm amidine latex. (b) Sample obtained from 980 nm sulfate latex. Both scale bars correspond to 1 µm. 6
7 To obtain additional information on the porosity of the material and the thermal aspects of its formation, thermogravimetric analysis (TGA) experiments on the calcination of the latex/silica composites were carried out. Typical results comparing the thermal decomposition of the latexsilica composite and of pure latex crystals are shown in Figure 3. The data were processed by the formula ε = w s wl ρl ρ + w s where ε is the porosity, w l and w s are the corresponding weights of latex and silica in the sample, ρ l and ρ s are their densities (assumed to be 1.05 g/cm 3 for the polystyrene latex and 2.20 g/cm 3 for the fused silica). Substituting the above TGA values, an estimated porosity of 78 vol% is obtained. This value is close to that expected for a material with close-packed ordered spherical pores ( 74%). l ρ l Weight, % Temp., deg. C Weight, % Latex-Silica Comp. Latex only Time, min Temperature, deg. C Figure 4. TGA plot obtained during calcination of materials formed from 300 nm latex. The latex-silica composite sample is normalized to 100% after evaporation of the residual water. Thus we believe that we have proven experimentally the applicability of our method to the assembly of silica samples with pores of defined size and excellent ordering. A reasonable and pragmatic approach for the next steps should concentrate on adapting the method to the formation of samples that are larger in volume and better ordered. Interesting possibilities could 7
8 be found by reverse templating or introducing catalyst metal particles inside the ordered cavities via the latex template. 4. Conclusions We have developed a novel method by which we obtained silica samples with an ordered lattice of pores ranging from 190 to 1000 nm in size (5,6). The novel features of the method that make it promising from fundamental and practical viewpoints are: Two important research fields colloidal crystallization and microporous silica were linked. This is the first study that makes use of 3D colloidal crystals as a basis for the production of durable solid-state materials. In contrast to MCM-41 phases, the pore size of the materials is precisely tunable in a wide range. The concept of modifying the surface properties of the latex particles by adsorption of surfactant makes the method applicable to colloidal crystals prepared from a wide variety of particles. The symmetry and the shape of pores can, in principle, be regulated. This is a step-by-step controllable process. It uses cheap and clean synthetic materials and appears to have promise for a quick transition to practical production of advanced materials. 5. Referencess. 1. Kresge, C.T., et al., Nature, 359, 710 (1992). 2. Beck, J.S. et al., J. Am. Chem. Soc., 114, (1992). 3. Monnier, A. et al., Science, 261, 1299 (1993). 4. Arora, A.K. and Rajagopalan, R. in Ordering and Phase Transitions in Charged Colloids ; Arora, A.K., Tata, B.V.R. Eds.; VCH Publ.: New York, Velev, O.D., Jede, T.A., Lobo, R.F. and Lenhoff, A.M., Nature, 389, 447 (1997). 6. Velev, O.D., Jede, T.A., Lobo, R.F. and Lenhoff, A.M., Chem. Mater., 10, 3597 (1998). 8
Synthesis of ordered microporous carbons via template technique
Synthesis of ordered microporous carbons via template technique Zhou Ying, Yao Qimei, Qiu Jieshan *, Guo Hongchen, Sun Zongwei Carbon Research Laboratory, Center for Nano Materials and Science, School
More informationFabrication of SiO 2, Al 2 O 3, and TiO 2 Microcapsules with Hollow Core and Mesoporous Shell Structure
Fabrication of SiO 2, Al 2 O 3, and TiO 2 Microcapsules with Hollow Core and Mesoporous Shell Structure Xiao-Feng Guo, Yong-Suk Kim, and Geon-Joong Kim Department of Chemical Engineering, Inha UniVersity,
More informationJulien Schmitt, postdoc in the Physical Chemistry department. Internship 2010: Study of the SAXS scattering pattern of mesoporous materials
Before starting Julien Schmitt, postdoc in the Physical Chemistry department Internship 2010: Study of the SAXS scattering pattern of mesoporous materials PhD 2011-2014: Self-assembly mechanism of mesoporous
More informationHigh-resolution Characterization of Organic Ultrathin Films Using Atomic Force Microscopy
High-resolution Characterization of Organic Ultrathin Films Using Atomic Force Microscopy Jing-jiang Yu Nanotechnology Measurements Division Agilent Technologies, Inc. Atomic Force Microscopy High-Resolution
More informationPreparation and characterization of poly(styrenemethacrylic acid)/mcm-41 core/shell nanocomposite microspheres
e-polymers 2009, no. 121 http://www.e-polymers.org ISSN 1618-7229 Preparation and characterization of poly(styrenemethacrylic acid)/mcm-41 core/shell nanocomposite microspheres Yansheng Zhao, * Xingji
More informationElectronic Supplementary Information (ESI)
Electronic Supplementary Information (ESI) Experimental details 1. Preparation of KIT-6 mesoporous silica: Conc. HCl solution (37 wt%) and Pluronic P123 were dissolved in water. After the dissolution,
More informationDouble Mesoporous Silica Shelled Spherical/Ellipsoidal Nanostructures: Synthesis and Hydrophilic/Hydrophobic Anticancer Drug Delivery
Supporting information for Supplementary Material (ESI) for Journal of Materials Chemistry Double Mesoporous Silica Shelled Spherical/Ellipsoidal Nanostructures: Synthesis and Hydrophilic/Hydrophobic Anticancer
More informationCarbon nanotube coated snowman-like particles and their electro-responsive characteristics. Ke Zhang, Ying Dan Liu and Hyoung Jin Choi
Supporting Information: Carbon nanotube coated snowman-like particles and their electro-responsive characteristics Ke Zhang, Ying Dan Liu and Hyoung Jin Choi Experimental Section 1.1 Materials The MWNT
More information2 Preparation of hollow spheres, microcapsules and microballoons by surfactant free emulsion templating
2 Preparation of hollow spheres, microcapsules and microballoons by surfactant free emulsion templating We report on the synthesis of new types of monodisperse, micrometer-sized hollow particles obtained
More informationTemperature Effect on Pore Structure of Nanostructured Zeolite Particles Synthesized by Aerosol Spray Method
Temperature Effect on Pore Structure of Nanostructured Zeolite Particles Synthesized by Aerosol Spray Method Yu-Chih Lin 1 and Hsunling Bai 2 1. Department of Environmental Engineering and Health, Yuanpei
More informationProviding sustainable supply of clean water is one of
1 Introduction Fabrication of Water Treatment Membrane Using Templating Method A Critical Review Fabrication of Water Treatment Membrane Using Templating Method A Critical Review ABSTRACT The progress
More informationSupporting information
Supporting information Thermo-responsive coatings on hollow particles with mesoporous shells serve as stimuliresponsive gates to species encapsulation and release. Yang Su 1, Olakunle Francis Ojo 1, Igor
More informationFABRICATION OF IRON NICKEL ALLOY PHOTONIC CRYSTALS BY ELECTRODEPOSITION
FABRICATION OF IRON NICKEL ALLOY PHOTONIC CRYSTALS BY ELECTRODEPOSITION Y. Li 1 *, W. H. Xin 1, X. Li 2, X.D.Meng 1 1.Center for Composite Materials, Harbin Institute of Technology, Harbin, P.R.China,
More informationSupporting Information
Supporting Information Surfactant-Free Assembly of Mesoporous Carbon Hollow Spheres with Large Tunable Pore Sizes Hongwei Zhang, Owen Noonan, Xiaodan Huang, Yannan Yang, Chun Xu, Liang Zhou, and Chengzhong
More informationQuantitative measurement of a mixture of mesophases cubic MCM-48 and hexagonal MCM-41 by 13C CP/MAS NMR
University Technology Malaysia From the SelectedWorks of Hadi Nur May, 2004 Quantitative measurement of a mixture of mesophases cubic MCM-48 and hexagonal MCM-41 by 13C CP/MAS NMR Hadi Nur, University
More informationNanosphere Lithography
Nanosphere Lithography Derec Ciafre 1, Lingyun Miao 2, and Keita Oka 1 1 Institute of Optics / 2 ECE Dept. University of Rochester Abstract Nanosphere Lithography is quickly emerging as an efficient, low
More informationInfluence of Nonionic Surfactant Concentration on Physical Characteristics of Resorcinol-Formaldehyde Carbon Cryogel Microspheres
Influence of Nonionic Surfactant Concentration on Physical Characteristics of Resorcinol-Formaldehyde Carbon Cryogel Microspheres Seong-Ick Kim, Takuji Yamamoto, Akira Endo, Takao Ohmori, and Masaru Nakaiwa
More informationSynthesis and Characterization of high-performance ceramic materials for hightemperature
Synthesis and Characterization of high-performance ceramic materials for hightemperature CO 2 capture and hydrogen production. Location: Institute for Energy Technology (IFE), Kjeller, Norway Department
More informationA Novel Self-aligned and Maskless Process for Formation of Highly Uniform Arrays of Nanoholes and Nanopillars
Nanoscale Res Lett (2008) 3: 127 DOI 10.1007/s11671-008-9124-6 NANO EXPRESS A Novel Self-aligned and Maskless Process for Formation of Highly Uniform Arrays of Nanoholes and Nanopillars Wei Wu Æ Dibyendu
More informationEncapsulation. Battelle Technology. Introduction
Encapsulation Introduction The encapsulation methods reported in the literature 1-7 for the production of microcapsules are generally achieved using one of the following techniques: 1. Phase separation
More informationSelf-assembled nanostructures for antireflection optical coatings
Self-assembled nanostructures for antireflection optical coatings Yang Zhao 1, Guangzhao Mao 2, and Jinsong Wang 1 1. Deaprtment of Electrical and Computer Engineering 2. Departmentof Chemical Engineering
More informationSynthesis of Zeolite Composite Membranes for CO2 Separation
Synthesis of Zeolite Composite Membranes for CO2 Separation April. 10. 2003 Sang Hoon Hyun, Dong Wook Shin, Young Eun Lee, Moon Hee Han*, and Churl Hee Cho* School of Materials Science & Engineering Yonsei
More informationSupplementary Information
Electronic Supplementary Material (ESI) for Nanoscale. This journal is The Royal Society of Chemistry 2015 Supplementary Information Visualization of equilibrium position of colloidal particles at fluid-water
More informationDesign and Synthesis of Nitrogen-Doped Porous Carbon Materials for CO 2 Capture and Investigation of CO 2 Sorption Kinetics
Design and Synthesis of Nitrogen-Doped Porous Carbon Materials for CO 2 Capture and Investigation of CO 2 Sorption Kinetics Investigators Jennifer Wilcox, Assistant Professor, Energy Resources Engineering;
More informationSilica-Based Nanomaterials in Chemistry Education
Silica-Based Nanomaterials in Chemistry Education Timm Wilke 1, Stefanie Haffer 2, Thomas Waitz 1 1 Department of Chemistry Didactics, Georg-August-University Göttingen, 2 Faculty of Science, University
More informationPREPARATION OF MCM-48 MESOPOROUS MOLECULAR SIEVE INFLUENCE OF PREPARATION CONDITIONS ON THE STRUCTURAL PROPERTIES
Digest Journal of Nanomaterials and Biostructures Vol. 11, No. 1, January - March 2016, p. 271-276 PREPARATION OF MCM-48 MESOPOROUS MOLECULAR SIEVE INFLUENCE OF PREPARATION CONDITIONS ON THE STRUCTURAL
More informationGeneral Synthesis of Two-Dimensional Patterned Conducting Polymer-Nanobowl Sheet via Chemical Polymerization
Communication DOI: 10.1002/marc.200600047 771 Summary: A general method for the generation of twodimensional (2D) ordered, large-area, and liftable conducting polymer-nanobowl sheet has been demonstrated
More informationPreparation of three-dimensionally ordered macroporous perovskite materials
Article Materials Science July 2011 Vol.56 No.20: 2156 2161 doi: 10.1007/s11434-011-4531-y SPECIAL TOPICS: Preparation of three-dimensionally ordered macroporous perovskite materials FANG JunFei, XUAN
More informationII.2 Photonic Crystals of Core-Shell Colloidal Particles
II.2 Photonic Crystals of Core-Shell Colloidal Particles We report on the fabrication and optical transmission studies of thin three-dimensional photonic crystals of high-dielectric ZnS-core and low-dielectric
More informationCatalyst loaded porous membranes for environmental applications Smart Membranes. Bin Ren
Catalyst loaded porous membranes for environmental applications Smart Membranes Bin Ren Thesis for the degree of Master of Science Materials Chemistry Division Department of Materials Science and Engineering
More informationAdsorption of Methylene Blue on Mesoporous SBA 15 in Ethanol water Solution with Different Proportions
2015 2 nd International Conference on Material Engineering and Application (ICMEA 2015) ISBN: 978-1-60595-323-6 Adsorption of Methylene Blue on Mesoporous SBA 15 in Ethanol water Solution with Different
More informationA General Synthesis of Discrete Mesoporous Carbon Microspheres through a Confined Self- Assembly Process in Inverse Opals
A General Synthesis of Discrete Mesoporous Carbon Microspheres through a Confined Self- Assembly Process in Inverse Opals Zhenkun Sun,, Yong Liu, Bin Li, Jing Wei, Minghong Wang, Qin Yue, Yonghui Deng,
More informationWELL-SIZED POROUS MATERIALS FOR SUPERCAPACITORS PREPARED BY A TEMPLATING PROCEDURE
WELL-SIZED POROUS MATERIALS FOR SUPERCAPACITORS PREPARED BY A TEMPLATING PROCEDURE E. Frackowiak 1, K. Jurewicz 1, C. Vix-Guterl 2, S. Saadallah 2, M. Reda 2, J. Parmentier 3, J. Patarin 3, F. Béguin 4
More informationElectronic Supporting Information
Electronic Supplementary Material (ESI) for Journal of Materials Chemistry A. This journal is The Royal Society of Chemistry 2015 Electronic Supporting Information 3D ordered macroporous TiO 2 -supported
More informationSuperparamagnetic nanoparticle arrays for magnetically tunable photonics. Josh Kurzman Materials 265
Superparamagnetic nanoparticle arrays for magnetically tunable photonics Josh Kurzman Materials 265 Superparamagnetism In SPM regime, thermal energy sufficient to overcome spin reversal barrier T B Below
More informationHomogeneous vs Heterogeneous Catalysts
Homogeneous vs Heterogeneous Catalysts Homogeneous Liquid phase Low temperature High selectivity High diffusivity Easy heat transfer Difficult catalyst separation Expensive recycling Well-defined active
More informationChemistry. Physical Organic Inorganic. Chemistry. Crystallography. X-ray. Bioinorganic Solid State. Theory. Group. Polymers.
Chemistry Physical Organic Inorganic Organometallics, Metal Complexes Clusters, Cages Bioinorganic Solid State Chemistry Group Theory X-ray Crystallography Polymers What is Solid State Chemistry? What
More informationSacrifical Template-Free Strategy
Supporting Information Core/Shell to Yolk/Shell Nanostructures by a Novel Sacrifical Template-Free Strategy Jie Han, Rong Chen and Rong Guo* School of Chemistry and Chemical Engineering, Yangzhou University,
More informationsensors ISSN by MDPI
Sensors 2006, 6, 318-323 sensors ISSN 1424-8220 2006 by MDPI http://www.mdpi.org/sensors Gas Sensing Properties of Ordered Mesoporous SnO 2 Thorsten Wagner 1,2,*, Claus-Dieter Kohl 1, Michael Fröba 2 and
More informationEffect of Supercritical Carbon Dioxide on the Ordering and Aggregation of Polystyrene Latex Particles
Effect of Supercritical Carbon Dioxide on the rdering and Aggregation of Polystyrene Latex Particles Albertina Cabañas*, Eduardo Enciso, M. Carmen Carbajo, María J. Torralvo, Concepción Pando and Juan
More informationStable Encapsulation of Quantum Dot Barcodes with Silica Shells
Stable Encapsulation of Quantum Dot Barcodes with Silica Shells Shang-Hsiu Hu and Xiaohu Gao Department of Bioengineering, University of Washington Seattle, WA 98195 (USA) Adv. Funct. Mater. 2010. ASAP
More informationHighly Ordered Hexagonal Mesoporous Silica as Hosts and Templates for Encapsulation of Germanium Semiconductor Clusters
University of New Orleans ScholarWorks@UNO University of New Orleans Theses and Dissertations Dissertations and Theses 5-18-2007 Highly Ordered Hexagonal Mesoporous Silica as Hosts and Templates for Encapsulation
More informationDefects in Self Assembled Colloidal Crystals
Defects in Self Assembled Colloidal Crystals Y. K. Koh 1, L. K. Teh 2, C. C. Wong 1,2 1. Advanced Materials for Micro and Nano Systems, Singapore-MIT Alliance 2. School of Materials Enginnering, Nanyang
More informationDisordered mesoporous silicates formed by templation of a liquid crystal (L 3 )
Mat. Res. Soc. Symp. Proc. Vol. 658 2001 Materials Research Society Disordered mesoporous silicates formed by templation of a liquid crystal (L 3 ) Abds-Sami Malik, Daniel M. Dabbs, Ilhan A. Aksay, Howard
More informationEgyptian Petroleum Research Institute BY Rasha Hosny Abdel Mawla Yousef
Novel Mesoporous Silicas and its Characterizations for Oil Adsorption from Produced Water Injected in Water Injection Projects using Fixed Bed Column Processes BY Rasha Hosny Abdel Mawla Yousef Egyptian
More informationFabrication of Colloidal Particle Array. by Continuous Coating Process
Fabrication of Colloidal Particle Array by Continuous Coating Process Yasushige Mori, Daisuke Nonaka, Keita Yokoi, Yoshiki Hataguchi, Ryosuke Kimura, and Katsumi Tsuchiya Doshisha University, Department
More informationSupporting Information. for. Angew. Chem. Int. Ed. Z Wiley-VCH 2004
Supporting Information for Angew. Chem. Int. Ed. Z 54131 Wiley-VCH 2004 69451 Weinheim, Germany Angew. Chem. Int. Ed., Z. Y. Tian Z54131 Supporting Info Page 1 Supplementary Materials: Material A providing
More informationPhysical properties of porous membranes. Membranes D f S BET [m 2 /g] d peak [nm]
The Sol-Gel Preparation and Characterization of Nanoporous Silica Membrane with Controlled Pore Size T. Fujii, T. Izumi, Dept. of Food Sci., Niigata Univ. of Pharm. & Appl. Life Sci., Niitsu, Niigata 956-8603,
More informationAn Evaporative Co-assembly Method for Highly-Ordered Inverse Opal Films
An Evaporative Co-assembly Method for Highly-Ordered Inverse Opal Films Benjamin Hatton 1, Lidiya Mishchenko 1, Robert Norwood 2, Stan Davis 3, Kenneth Sandhage 3, Joanna Aizenberg 1 [1] School of Engineering
More informationReport on Preparation of Nanotemplates for mab Crystallization
Deliverable number D2.1 Due date 30/09/2017 Deliverable title Report on Preparation of Nanotemplates for mab Crystallization Issue date 21/09/2017 WP number WP2 Author(s) J. Heng, W. Chen, H. Yang Lead
More informationMaterials development for inorganic membrane layers at ECN
Materials development for inorganic membrane layers at ECN B.C. Bonekamp Presented at XXV EMS Summerschool, Leuven, Belgium, September ECN-M--09-062 May Materials Development for Inorganic Membrane Layers
More informationThe Better Way to Characterize Nanoparticles MANTA s ViewSizer 3000
info@mantainc.com www.mantainc.com The Better Way to Characterize Nanoparticles MANTA s ViewSizer 3000 MANTA s Most Advanced Nanoparticle Tracking Analysis technology performs individual particle analysis
More informationFabrication of ordered array at a nanoscopic level: context
Fabrication of ordered array at a nanoscopic level: context Top-down method Bottom-up method Classical lithography techniques Fast processes Size limitations it ti E-beam techniques Small sizes Slow processes
More informationElectronic supplementary information
Electronic Supplementary Material (ESI) for ChemComm. This journal is The Royal Society of Chemistry 2018 Electronic supplementary information Heterogeneous nucleation and growth of highly crystalline
More informationMacroporous bubble graphene film via template-directed ordered-assembly for high rate supercapacitors
Electronic Supporting Information for Macroporous bubble graphene film via template-directed ordered-assembly for high rate supercapacitors Cheng-Meng Chen* a, Qiang Zhang b, Chun-Hsien Huang c, Xiao-Chen
More informationNANOSILICEOUS MATRIX FOR DRUG INCAPSULATION
NANOSILICEOUS MATRIX FOR DRUG INCAPSULATION L. G. HANU 1, A. M. HANU 1, E. POPOVICI 1, G. BURTICĂ 2, D. TIMPU 3 1 Faculty of Chemistry, Univ. Al. I. Cuza, Iaºi 2 University Politehnica, Timiºoara 3 P.
More informationSelf-Organization Kinetics of Mesoporous Nanostructured Particles
MATERIALS, INTERFACES, AND ELECTROCHEMICAL PHENOMENA Self-Organization Kinetics of Mesoporous Nanostructured Particles Leon Gradoń Dept. of Chemical Engineering, Warsaw University of Technology, 00-645
More informationModeling of Electrochemical Cells: HYD Lecture 08. Composite Membranes
Modeling of Electrochemical Cells: Proton Exchange Membrane Fuel Cells HYD7007 01 Lecture 08. Composite Membranes Dept. of Chemical & Biomolecular Engineering Yonsei University Spring, 2011 Prof. David
More informationMicrowave-Assisted Self-Organization of Colloidal Particles in Confining Aqueous Droplets
Published on Web 07/27/2006 Microwave-Assisted Self-Organization of Colloidal Particles in Confining Aqueous Droplets Shin-Hyun Kim, Su Yeon Lee, Gi-Ra Yi,, David J. Pine, and Seung-Man Yang*, Contribution
More informationSynthesis, Characterization and Catalytic Activity of MCM-41 Catalyst for Nitration of Phenol
http://www.e-journals.in Chemical Science Transactions DOI:10.7598/cst2015.952 2015, 4(2), 438-442 RESEARCH ARTICLE Synthesis, Characterization and Catalytic Activity of MCM-41 Catalyst for Nitration of
More informationMacroporous bubble graphene film via template-directed ordered-assembly for high rate supercapacitors
Electronic Supporting Information for Macroporous bubble graphene film via template-directed ordered-assembly for high rate supercapacitors Cheng-Meng Chen* a, Qiang Zhang b, Chun-Hsien Huang c, Xiao-Chen
More informationSupplementary information for:
Supplementary information for: Solvent dispersible nanoplatinum-carbon nanotube hybrids for application in homogeneous catalysis Yuhong Chen, Xueyan Zhang and Somenath Mitra* Department of Chemistry and
More informationnot to be confused with using the materials to template nanostructures
Zeolites as Templates: continued Synthesis: Most zeolite syntheses are performed by using template-synthesis not to be confused with using the materials to template nanostructures templates are often surfactants
More informationElectrophoretic Deposition. - process in which particles, suspended in a liquid medium, migrate in an electric field and deposit on an electrode
Electrophoretic Deposition - process in which particles, suspended in a liquid medium, migrate in an electric field and deposit on an electrode no redox differs from electrolytic in several ways deposit
More informationMarkus Niederberger Max Planck Institute of Colloids and Interfaces, Potsdam, Germany.
Markus Niederberger Max Planck Institute of Colloids and Interfaces, Potsdam, Germany Markus.Niederberger@mpikg-golm.mpg.de Outline of the Lecture Self-Assembly of Nanocrystals to Superstructures What
More informationARC-ASSISTED CO-CONVERSION OF COAL-BASED CARBON AND ACETYLENE
ARC-ASSISTED CO-CONVERSION OF COAL-BASED CARBON AND ACETYLENE Jieshan Qiu*, Yongfeng Li, Yunpeng Wang Carbon Research Laboratory, Center for Nano Materials and Science, School of Chemical Engineering,
More informationTailor-Made Nanostructured Ion Selective MCM-48 Membranes
Mat. Res. Soc. Symp. Proc. Vol. 775 2003 Materials Research Society P1.4.1 Tailor-Made Nanostructured Ion Selective MCM-48 Membranes Sankhanilay Roy Chowdhury, Riaan Schmuhl, Klaas Keizer, Albert van den
More informationSolvent Wrapped Metastable Colloidal Crystals: Highly Mutable Colloidal Assemblies. Sensitive to Weak External Disturbance
Solvent Wrapped Metastable Colloidal Crystals: Highly Mutable Colloidal Assemblies Sensitive to Weak External Disturbance Dongpeng Yang 2, Siyun Ye 1 and Jianping Ge 1 * 1. Shanghai Key Laboratory of Green
More informationLecture 6: Individual nanoparticles, nanocrystals and quantum dots
Lecture 6: Individual nanoparticles, nanocrystals and quantum dots Definition of nanoparticle: Size definition arbitrary More interesting: definition based on change in physical properties. Size smaller
More informationSupporting Information
Supporting Information Superstructural Raman Nanosensors with Integrated Dual Functions for Ultrasensitive Detection and Tunable Release of Molecules Jing Liu #, Jianhe Guo #, Guowen Meng and Donglei Fan*
More informationExperimental details. General
Experimental details General TiO 2 P25 was purchased from Degussa; methyl methacrylate (MMA, 99%), 2,2 -azobis(2- methylpropionamidine) dihydrochloride (97%), titanium (IV) isopropoxide (97%), concentrated
More informationPhotonic crystals of core shell colloidal particles
Letter to Appl. Phys. Letters June 8, 2001 Photonic crystals of core shell colloidal particles Krassimir P. Velikov, a, ) Alexander Moroz, a) and Alfons van Blaaderen a,b, ) a Physics and Chemistry of
More informationOSCILLATORY THICKNESS DEPENDENCE OF THE COERCIVE FIELD IN MAGNETIC 3D ANTI-DOT ARRAYS
1 OSCILLATORY THICKNESS DEPENDENCE OF THE COERCIVE FIELD IN MAGNETIC 3D ANTI-DOT ARRAYS A. A. Zhukov 1, M. A. Ghanem 2, A. V. Goncharov 1, R. Boardman 3, V. Novosad 4, G. Karapetrov 4, H. Fangohr 3, P.
More informationUtilization of Rice Husk Ash Silica in Controlled Releasing Application
Journal of Metals, Materials and Minerals, Vol.9 No.2 pp.6-65, 29 Utilization of Rice Husk Ash Silica in Controlled Releasing Application Piyawan PRAWINGWONG, Chaiyan CHAIYA 2, Prasert REUBROYCHAROEN 3
More informationSelf-Assembly of Coated Colloidal Particles for Optical Applications
Self-Assembly of Coated Colloidal Particles for Optical Applications Introduction Nearly two decades ago, theoretical predictions indicated the possibility of creating omnidirectional photonic-band-gap
More informationSupporting Information
Supporting Information Wiley-VCH 2013 69451 Weinheim, Germany Colloidal Clusters by Using Emulsions and Dumbbell-Shaped Particles: Experiments and Simulations** Bo Peng,* Frank Smallenburg,* Arnout Imhof,
More informationSupporting information
Supporting information A Facile Photo-induced Synthesis of COOH Functionalized Mesomacroporous Carbon Film and its Excellent Sensing Capability for Aromatic Amines Lichao Jia, Gurudas P. Mane, Chokkalingam
More informationSELF-ASSEMBLY AND NANOTECHNOLOGY A Force Balance Approach
SELF-ASSEMBLY AND NANOTECHNOLOGY A Force Balance Approach Yoon S. Lee Scientific Information Analyst Chemical Abstracts Service A Division of the American Chemical Society Columbus, Ohio WILEY A JOHN WILEY
More informationSurface Modification of PTMS Particles with Organosilanes: TEOS-, VTMS-, and MTMS-Modified Particles
Journal of Sol-Gel Science and Technology 31, 117 121, 2004 c 2004 Kluwer Academic Publishers. Manufactured in The United States. Surface Modification of PTMS Particles with Organosilanes: TEOS-, VTMS-,
More informationDry-gel conversion synthesis of Cr-MIL-101 aided by grinding: High surface area high yield synthesis with minimum purification
Electronic Supporting Informations (ESI): Dry-gel conversion synthesis of Cr-MIL-101 aided by grinding: High surface area high yield synthesis with minimum purification Jun Kim, Yu-Ri Lee and Wha-Seung
More informationPre-seeding -assisted synthesis of high performance polyamide-zeolite nanocomposie membrane for water purification
Electronic Supporting Information: Pre-seeding -assisted synthesis of high performance polyamide-zeolite nanocomposie membrane for water purification Chunlong Kong, a Takuji Shintani b and Toshinori Tsuru*
More informationSupporting Information
Copyright WILEY-VCH Verlag GmbH & Co. KGaA, 69469 Weinheim, Germany, 2015. Supporting Information for Adv. Energy Mater., DOI: 10.1002/aenm.201500060 Interconnected Nanorods Nanoflakes Li 2 Co 2 (MoO 4
More informationOne-pot synthesis of micron partly hollow anisotropic dumbbell shaped silica core-shell particles
Electronic Supplementary Material (ESI) for ChemComm. This journal is The Royal Society of Chemistry 2016 Supporting Information One-pot synthesis of micron partly hollow anisotropic dumbbell shaped silica
More informationSupplementary Information
Supplementary Information Fabrication of Novel Rattle-Type Magnetic Mesoporous carbon Microspheres for Removal of Microcystins Xinghua Zhang and Long Jiang* Beijing National Laboratory for Molecular Science
More informationSelf-Assembly of Polyhedral Hybrid Colloidal Particles
Mater. Res. Soc. Symp. Proc. Vol. 1135 2009 Materials Research Society 1135-CC06-08 Self-Assembly of Polyhedral Hybrid Colloidal Particles Adeline Perro 1, Etienne Duguet 3, Serge Ravaine 4 and Vinothan
More informationThermogravimetric Analysis (TGA) Profile at Different Calcination Conditions for Synthesis of PTES-SBA-15
American Journal of Applied Sciences Original Research Paper Thermogravimetric Analysis (TGA) Profile at Different Calcination Conditions for Synthesis of PTES-SBA-15 Norhasyimi Rahmat, Nurjihan Sadon
More informationShape Assisted Fabrication of Fluorescent Cages of Squarate based Metal-Organic Coordination Frameworks
Supporting Information Shape Assisted Fabrication of Fluorescent Cages of Squarate based Metal-Organic Coordination Frameworks Kolleboyina Jayaramulu, a Katla Sai Krishna, a Subi J. George, b Muthuswamy
More informationNanostructured Catalysts. Abhaya K. Datye University of New Mexico
Nanostructured Catalysts Abhaya K. Datye University of New Mexico Issues Control of surface composition Facile synthesis via self assembly Aggregation of nanoparticles Control of Surface Composition and
More informationNanostructured materials for solar energy
Nanostructured materials for solar energy Water Splitting & Dye Solar Cells Journée Scientifique des Comices «Energie Solaire» du WARE 23 avril 2012 à Jambes Prof. Rudi Cloots, C. Henrist, Contributors:
More informationSolution-processable graphene nanomeshes with controlled
Supporting online materials for Solution-processable graphene nanomeshes with controlled pore structures Xiluan Wang, 1 Liying Jiao, 1 Kaixuan Sheng, 1 Chun Li, 1 Liming Dai 2, * & Gaoquan Shi 1, * 1 Department
More informationMorphology-Selective Synthesis of Cu(NO3)2 2.5H2O. Micro/Nanostructures Achieved by Rational Manipulation
Electronic Supplementary Material (ESI) for CrystEngComm. This journal is The Royal Society of Chemistry 2018 Electronic Supplementary Information Morphology-Selective Synthesis of Cu(NO3)2 2.5H2O Micro/Nanostructures
More informationSupporting Information
This journal is The Royal Society of Chemistry 212 Silica SOS@HKUST-1 Composite Microspheres as Easily-Packed Stationary Phase for Fast Separation dham hmed, a Mark Forster, a Rob Clowes, a Darren radshaw,
More informationHydrothermal stability of MCM-48 improved by postsynthesis restructuring in salt solution
Microporous and Mesoporous Materials 41 (2000) 119±127 www.elsevier.nl/locate/micromeso Hydrothermal stability of MCM-48 improved by postsynthesis restructuring in salt solution Shinae Jun a, Ji Man Kim
More informationSupporting Information
Supporting Information Spatial heterogeneity in lyotropic liquid crystal with hexagonal phase David P. Penaloza Jr., Koichiro Hori, Atsuomi Shundo,* and Keiji Tanaka* Department of Applied Chemistry, Kyushu
More informationUtilization of Diatomite as Silica Source for the Synthesis of Ordered Mesoporous Silica Materials
Utilization of Diatomite as Silica Source for the Synthesis of Ordered Mesoporous Silica Materials Jirapa Kraisit, Chulalongkorn University, Thailand Chutimon Satirapipathkul, Chulalongkorn University,
More informationSupplementary Figure 1.
Supplementary Figure 1. Supplementary Figure 1. Effects of the unlimited current. (a) Photograph of a AAO formed by pulsed anodization in the following conditions: V MA=25 V, t MA=180 s; V HA,N =36 V,
More informationTungsten Nitride Inverse Opals by Atomic Layer Deposition
Tungsten Nitride Inverse Opals by Atomic Layer Deposition NANO LETTERS 2003 Vol. 3, No. 9 1293-1297 Alessandro Rugge, Jill S. Becker, Roy G. Gordon,*, and Sarah H. Tolbert*, Department of Chemistry and
More informationModel based design of controlled release drug delivery systems
Model based design of controlled release drug delivery systems Aditya Pareek, Praduman Arora, Venkataramana Runkana Copyright 2012 Tata Consultancy Services Limited 1 Why we need controlled drug delivery?
More informationA project report on SYNTHESIS AND CHARACTERISATION OF COPPER NANOPARTICLE-GRAPHENE COMPOSITE. Submitted by Arun Kumar Yelshetty Roll no 410 CY 5066
A project report on SYNTHESIS AND CHARACTERISATION OF COPPER NANOPARTICLE-GRAPHENE COMPOSITE Submitted by Arun Kumar Yelshetty Roll no 410 CY 5066 Under the guidance of Prof. (Ms). Sasmita Mohapatra Department
More informationCollege of Mechanical Engineering, Yangzhou University, Yangzhou , China; 2
Proceedings Light-Assisted Room-Temperature NO2 Sensors Based on Black Sheet-Like NiO Xin Geng 1,2,3, Driss Lahem 4, Chao Zhang 1, *, Marie-Georges Olivier 3 and Marc Debliquy 3 1 College of Mechanical
More information