期刊
POWDER TECHNOLOGY
卷 232, 期 -, 页码 1-6出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.powtec.2012.07.052
关键词
Mesoporous; gamma-alumina; Ag nanoparticles; Catalyst; Chemical reduction; Kinetics
资金
- Board of Research in Nuclear Science (BRNS), India [2010/37C/2/BRNS/827]
- CSIR, India
In this paper, we report a simple chemical reduction method for synthesis of spherical Ag nanoparticles (average size similar to 7 nm) within mesoporous alumina matrix. Shape and size of the Ag nanoparticles and structure of the catalysts are investigated by using high resolution transmission electron microscopy, diffuse reflectance spectroscopy, N-2 adsorption-desorption analysis, XRD and particle size analysis. The synthesized catalysts possess BET surface area of 281.6 m(2)/g and average pore size 638 nm. The synthesized Ag nanoparticle loaded mesoporous aluminas exhibit catalytic activity for the reduction of 4-nitrophenol to 4-aminophenol. (c) 2012 Elsevier B.V. All rights reserved.
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