CO₂ adsorption on amine-functionalized periodic mesoporous benzenesilicas

ACS Applied Materials & Interfaces
Kyohyun SimMietek Jaroniec

Abstract

CO2 adsorption was investigated on amine-functionalized mesoporous silica (SBA-15) and periodic mesoporous organosilica (PMO) samples. Hexagonally (p6mm) ordered mesoporous SBA-15 and benzene-PMO (BPMO) samples were prepared in the presence of Pluronic P123 block copolymer template under acidic conditions. Three kinds of amine-containing organosilanes and polyethylenimine were used to functionalize SBA-15 and BPMO. Small-angle X-ray scattering and nitrogen adsorption isotherms showed that these samples featured ordered mesostructure, high surface area, and narrow pore size distributions. Solid-state (13)C- and (29)Si cross-polarization magic-angle spinning NMR spectra showed chemical linkage between amine-containing modifiers and the surface of mesoporous materials. The chemically linked amine-containing modifiers were found to be on both the inner and outer surfaces. N-[3-(trimethoxysilyl)propyl]ethylenediamine-modified BPMO (A2-BPMO) sample exhibited the highest CO2 uptake (i.e., ∼3.03 mmol/g measured on a volumetric adsorption analyzer) and the fastest adsorption rate (i.e., ∼13 min to attain 90% of the maximum amount) among all the samples studied. Selectivity and reproducibility measurements for the A2-BPMO sample showed q...Continue Reading

References

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Citations

Jan 23, 2016·Analytical Chemistry·Sankar DasSubhra Jana
Jun 18, 2016·ACS Applied Materials & Interfaces·Mengya NiuAidong Tang
Mar 6, 2018·Dalton Transactions : an International Journal of Inorganic Chemistry·Hang HuoKaifeng Lin
Apr 24, 2018·Physical Chemistry Chemical Physics : PCCP·Moses ChoYousung Jung
Jun 1, 2019·Chemical Society Reviews·Masoud Jahandar LashakiAbdelhamid Sayari
Apr 18, 2019·Environmental Science and Pollution Research International·Tianmeng ZhangXiaoyu Wang
Nov 6, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Hui HeShuangfei Wang
Jul 31, 2019·ACS Applied Materials & Interfaces·Wenjing WangJoão C Diniz da Costa
Aug 18, 2020·Inorganic Chemistry·Ali ZebardastiM Hussein N Assadi
Sep 10, 2019·ACS Applied Materials & Interfaces·Rui ZhangTomasz P Blach

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