期刊
CHINESE JOURNAL OF CATALYSIS
卷 36, 期 7, 页码 1117-1123出版社
SCIENCE PRESS
DOI: 10.1016/S1872-2067(14)60310-7
关键词
Gold; Mesoporous silica; Nanotube; Bottom-up approach; Catalyst; 4-Nitrophenol reduction
资金
- National Natural Science Foundation of China [21273235, 21303076, 21403214]
- 100 Talents Program of the Chinese Academy of Sciences
Gold (Au) nanoparticle (NP)-mesoporous silica (SiO2) composite nanotubes were prepared by a bottom-up approach, in which Au NPs were anchored to the inner wall of mesoporous SiO2 tubular shells. In this composite, the agglomeration, exfoliation, and grain growth of Au NPs were restricted, and the loading and size of the catalyst NPs were easily tuned. The mesoporous shell, open ends, and one-dimensional passage of the SiO2 nanotubes all promote the diffusion of reactants, which enhanced the catalytic efficiency of this composite in the reduction of 4-nitrophenol, The Au NP-mesoporous SiO2 composite nanotubes also demonstrated good reusability, and no leaching or agglomeration of the Au NPs was observed during the catalytic reaction. (C) 2015, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
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