Preparation of carbonized MOF/MgCl 2 hybrid products as dye adsorbent and supercapacitor: Morphology evolution and Mg salt effect Ting Li, Shuai Ma, Hu Yang*, Zhen-liang Xu Membrane Research Center, Chemical Engineering Research Institute, East China University of Science and Technology, Shanghai 200237, PR China. Table of content N 2 adsorption/desorption (a) and pore size distribution curves (b) of Mg-MOF, figure S1 TGA curves of Mg-MOFs prepared without inducer, figure S2 Enlarged images of carbonized MOFs, figure S3 SAED of carbonized Mg-MOF products, figure S4, TEM of carbonized Mg-MOF products after second washing, figure S5 Selective adsorption of MO and MB (1:1) by C-II and C-III, figure S6 Molecular structure of MO and MB, figure S7. CV curves of different electrodes (a.b,c) at various scan rates within a potential range of -0.8 to 0 V (vs. Hg/HgO) in 6 mol/l KOH aqueous solution, Figure S8 Table S1 Chemical composition of carbonized Mg-MOFs determined from XPS measurement. Table S2. Summary of the Langmuir and Freundlich Isotherm fitting parameters for the adsorption of MO and MB onto carbonized products. Table S3 Experimental and calculated parameters of the kinetic models,measured at 200ppm. Table S4 Comparison of the Maximum Adsorption of MO onto Various Adsorbents. * Corresponding author. Tel:021-64252989. Email: hyang@ecust.edu.cn,(hu yang)
Figure S1 Mg-MOF N2 adsorption/desorption (a) and pore size distribution curves (b) of of
Figure S2 TGA curves of Mg-MOFs prepared without PET inducer
Figure S3 enlarged images of carbonized MOFs.
Figure S4, SAED of carbonized Mg-MOF products.
Figure S5. TEM of carbonized Mg-MOF products after second washing
Figure S6. selective adsorption of MO and MB (1:1) by C-II and C-III.
Figure S7. Molecular structure of MO and MB.
Figure S8. CV curves of different electrodes (a.b,c) at various scan rates within a potential range of -0.8 to 0 V (vs. Hg/HgO) in 6 mol/l KOH aqueous solution.
Table S1 Chemical composition of carbonized Mg-MOFs determined from XPS measurement. Element (atom %) C-II C-III C-II/2 C-III/2 CP-II CP-III C 81.89 86.14 97.41 97.53 97.58 96.73 O 10.14 6.91 2.59 2.47 2.42 3.24 Mg 6.72 3.73 - - - - Cl 1.25 1.52 - - - - Table S2. Summary of the Langmuir and Freundlich Isotherm fitting parameters for the adsorption of MO and MB onto carbonized products. Dye Sample q EXP Langmuir adsorption Freundlich isotherm (mg/g) q max (mg/g) b (L/mg) R 2 KF n R 2 MO C-II 2070 - - - 6.037 1.15 0.980 C-III 3250 - - - 4.464 1.04 0.985 CP-II 450 476 0.0185 0.986 20.41 1.71 0.843 CP-III 490 526 0.0154 0.947 19.63 1.67 0.835 MB C-II 243 284 0.0257 0.912 21.08 1.89 0.857 C-III 221 256 0.0287 0.903 22.03 2.05 0.892 CP-II 331 390 0.0131 0.906 10.69 1.53 0.886
CP-III 345 407 0.0126 0.913 13.59 1.69 0.894
Table S3 Experimental and calculated parameters of the kinetic models,measured at 200ppm. Pseudo-second-order (MO) Pseudo-second-order (MB) Sample qe(exp) qe(cal) k2 R 2 qe(exp) qe(cal) k2 R 2 (mg/g) (mg/g) (g/(mg.hr)) (mg/g) (mg/g) (g/(mg.hr)) C-II 965 1000 0.00288 0.984 314 328 0.00571 0.981 C-III 974 1020 0.00231 0.979 211 213 0.00562 0.998 CP-II 368 371 0.0231 0.996 462 471 0.0126 0.991 CP-III 430 438 0.0135 0.992 617 653 0.00271 0.974
Table S4 Comparison of the Maximum Adsorption of MO onto Various Adsorbents Adsorbent BET P ave q e (or q m ) b Condition Ref (m 2 /g) size a (nm) (mg/g) (Temp/pH/C 0 ) Fe 3 O 4 /Al 2 O 3 /chitosan composite 22 4.1 q m =417 298k/pH=6 C 0 =800ppm 50 N-doped nanoporous carbon 968 3.0 q m =202 298k/pH=7 c C 0 =750ppm 51 Activated carbon derived from finger citron residue 2887 1-4 q e =934 318K/pH=7 C 0 =450ppm 52 MnO 2 graphene CNT 173 10.4 q m =476 273K/pH=3 53 C 0 =300ppm Magnetic porous carbon spheres 603 2-3 q m =1522 293K/pH=7 C 0 =300ppm 54 Proton-containing δ-mno 2 166 8.93 q e =427 293K/pH=7 55 C 0 =600ppm Carbon-stabilized Fe/Fe 3 C nanoparticles 1023 12.5 q m =1062 298K/ ph =6.5 C0=150ppm 56 ZnAl-LDH/Al (OH) 3 122 8-20 q m =1015 298k/pH=7 57 C 0 =500ppm Carbonization pomelo peel 1892 1.9 q m =680 ph=3.0 58 and KOH activation.
q e =628 C 0 =300 ppm Calcined glycerol-modify Mg/Al layered hydroxides 173 - q m =1062 298K/pH=4.5 C 0 =30ppm 59 Plasma modification of 48.5 24.3 q m =1327 298K/pH=4 60 ZnMgAl-LDHs q e =980 C 0 =200ppm C-III 370 12.1 q e =3250 C-II 447 10.9 q e =2070 298K/pH=7 C 0 =800ppm This study a: P ave, average pore size, b:q e, measured adsorption data, q m, calculated by langmuir model, c: ph=7, the solution ph is used as the natural without adjusting.