Facile assembly of mesoporous silica nanoparticles with hierarchical pore structure for CO2 capture

作     者：Tingting Song Hongyu Zhao Yu Hu Nannan Sun Haijiao Zhang 

作者机构：Institute of Nanochemistry and NanobiologyShanghai UniversityShanghai 200444China CAS Key Lab of Low-Carbon Conversion Science and EngineeringShanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201210China 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2019年第30卷第12期

页      面：2347-2350页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 070205[理学-凝聚态物理] 08[工学] 070304[理学-物理化学(含∶化学物理)] 0703[理学-化学] 0702[理学-物理学] 

基　　金：support from the Shanghai Pujiang Program (No.17PJD015) Shuguang Program supported by Shanghai Education Development Foundation and Shanghai Municipal Education Commission (No.18SG035) 

主　　题：Mesoporous silica nanoparticles Hierarchical pore structure Self-assembly Amine-functionization Adsorption 

摘      要：In the work,we propose an efficient one-pot approach for synthesis of a new type of mesoporous silica nanoparticles(MSNs).That can be successfully realized by using tetraethylorthosilicate(TEOS) and N-[3-(trimethoxysilyl)propyl]ethylenediamine(TSD) as the silica precursors and cetyltrimethylammonium bromide(CTAB) as the structure-directing agent through a facile assembly process.The as-synthesized MSNs possess a spherical morphology with about 230 nm,a relatively high surface area of133 m^2/g,and a hierarchical pore size distribution.When applied as the sorbents,the amine-functioned MSNs demonstrate the enhanced adsorption capacity for CO2 capture(at 1 bar,15 vol% CO2,up to80.5 mg/g at 75℃),high selectivity,and good cycling durability,benefiting from the suitable modification of polyethyleneimine.