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Efficient 3-aminopropyltrimethoxysilane functionalised mesoporous ceria nanoparticles for CO2 capture
Materials Today Chemistry ( IF 7.3 ) Pub Date : 2020-06-01 , DOI: 10.1016/j.mtchem.2020.100273
A.A. Azmi , A.H. Ruhaimi , M.A.A. Aziz

Abstract This work described the effect of 3-aminopropyltrimethoxysilane (APTMS) functionalization on the mesoporous ceria nanoparticles (MCNs) toward CO2 capture. The MCN and APTMS-loaded MCN (APTMS-MCN) were prepared by the sol-gel and impregnation method, respectively. The functionalization of APTMS on the MCN enhanced the CO2 binding sites which were observed through the formation of carbamate species from the interaction of CO2 with the NH group. This resulted to the increase of CO2 adsorption capacity of APTMS-MCN with 10-fold higher than that of pristine MCNs. For MCNs, CO2 may be adsorbed onto oxygen basic, oxygen vacant, and hydroxyl sites which further formed polydentate, monodentate, bidentate, and hydrogen carbonate species. In addition to these carbonate species, the adsorption of CO2 on APTMS-MCN has largely occurred through the formation of carbamate species which further enhanced its CO2 uptake.

中文翻译:

用于二氧化碳捕获的高效 3-氨基丙基三甲氧基硅烷功能化介孔氧化铈纳米粒子

摘要 这项工作描述了 3-氨基丙基三甲氧基硅烷 (APTMS) 官能化对介孔氧化铈纳米粒子 (MCN) 捕获 CO2 的影响。MCN 和载有 APTMS 的 MCN (APTMS-MCN) 分别通过溶胶-凝胶法和浸渍法制备。APTMS 在 MCN 上的功能化增强了 CO2 结合位点,这是通过 CO2 与 NH 基团相互作用形成氨基甲酸酯物质而观察到的。这导致 APTMS-MCN 的 CO2 吸附容量增加,比原始 MCN 的吸附容量高 10 倍。对于 MCN,CO2 可能被吸附到氧碱、氧空位和羟基位点,进一步形成多齿、单齿、双齿和碳酸氢盐物质。除了这些碳酸盐种类,
更新日期:2020-06-01
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