文献类型：期刊文献

英文题名：Paving the way for surface modification in one-dimensional channels of mesoporous materials via plasma treatment

作者：Gao, Jie;Zhu, Xiang;Bian, Zijun;Jin, Tian;Hu, Jun[1];Liu, Honglai

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China; E China Univ Sci & Technol, Dept Chem, Shanghai 200237, Peoples R China

年份：2015

卷号：202

期号：C

起止页码：16

外文期刊名：MICROPOROUS AND MESOPOROUS MATERIALS

收录：;EI(收录号：20151400713289);WOS:【SCI-EXPANDED(收录号:WOS:000346211600003)】；

基金：This work is supported by the National Basic Research Program of China (2013CB733501), the National Natural Science Foundation of China (Nos. 91334203, 21176066, 21376074), the project of FP7-PEOPLE-2013-IRSES (PIRSES-GA-2013-612230), the 111 Project of China (No. B08021) and the Fundamental Research Funds for the Central Universities of China.

语种：英文

外文关键词：Plasma treatment; SBA-15; One-dimensional channels; Amine modification; CO2 adsorption

摘要：Plasma technology, an efficient and important approach for the surface modification, has been widely adopted for the treatment on the exposed surface of planar substrates. In this work, plasma treatment was demonstrated to be an effective way for the internal surface modification in one-dimensional channels of mesoporous SBA-15 particles, which is not a general planar substrate. Upon the plasma treatment in O-2 atmosphere, the silanol groups on the surface of channels were intensively activated, as a result, large amounts of amine groups (2.56 mmol (APTS)/g(sample)) can be effectively grafted within a very short time (2 h). The highly dispersed amine groups inside the channels can be facilely revealed by the location of in-situ coordinated Ag nanoparticles. Moreover, the amine-modified SBA-15 via the plasma treatment exhibited a better CO2 adsorption capacity (1.26 mmol/g) comparing with the traditional amine-modified SBA-15. Thus, our new approach may pave the way towards the rational modification and effective activation for porous materials, which would be meaningful for functionalization applications. (C) 2014 Elsevier Inc. All rights reserved.