An inorganic capping strategy for the seeded growth of versatile bimetallic nanostructures

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1 Chemistry Publications Chemistry 2015 An inorganic capping strategy for the seeded growth of versatile bimetallic nanostructures Yuchen Pei Iowa State University Raghu V. Maligal-Ganesh Iowa State University, Chaoxian Xiao Iowa State University Tian Wei Goh Iowa State University, Kyle Brashler Iowa State University See Follow next page this for and additional additional authors works at: Part of the Inorganic Chemistry Commons, Materials Chemistry Commons, and the Nanoscience and Nanotechnology Commons The complete bibliographic information for this item can be found at chem_pubs/1025. For information on how to cite this item, please visit howtocite.html. This Article is brought to you for free and open access by the Chemistry at Iowa State University Digital Repository. It has been accepted for inclusion in Chemistry Publications by an authorized administrator of Iowa State University Digital Repository. For more information, please contact

2 An inorganic capping strategy for the seeded growth of versatile bimetallic nanostructures Abstract Metal nanostructures have attracted great attention in various fields due to their tunable properties through precisely tailored sizes, compositions and structures. Using mesoporous silica (msio2) as the inorganic capping agent and encapsulated Pt nanoparticles as the seeds, we developed a robust seeded growth method to prepare uniform bimetallic nanoparticles encapsulated in mesoporous silica shells (PtM@mSiO2, M = Pd, Rh, Ni and Cu). Unexpectedly, we found that the inorganic silica shell is able to accommodate an eight-fold volume increase in the metallic core by reducing its thickness. The bimetallic nanoparticles encapsulated in mesoporous silica shells showed enhanced catalytic properties and thermal stabilities compared with those prepared with organic capping agents. This inorganic capping strategy could find a broad application in the synthesis of versatile bimetallic nanostructures with exceptional structural control and enhanced catalytic properties. Disciplines Inorganic Chemistry Materials Chemistry Nanoscience and Nanotechnology Comments This is a manuscript of an article published as Pei, Yuchen, Raghu V. Maligal-Ganesh, Chaoxian Xiao, Tian- Wei Goh, Kyle Brashler, Jeffrey A. Gustafson, and Wenyu Huang. "An inorganic capping strategy for the seeded growth of versatile bimetallic nanostructures." Nanoscale 7, no. 40 (2015): doi: /C5NR04614A. Posted with permission. Authors Yuchen Pei, Raghu V. Maligal-Ganesh, Chaoxian Xiao, Tian Wei Goh, Kyle Brashler, Jeffrey A. Gustafson, and Wenyu Huang This article is available at Iowa State University Digital Repository:

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