期刊
INORGANIC CHEMISTRY
卷 53, 期 17, 页码 9073-9079出版社
AMER CHEMICAL SOC
DOI: 10.1021/ic501092k
关键词
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资金
- National Natural Science Foundation (NSFC) [U1232211, 21271163]
- Foundation of National Science Base [20772188]
Noble metal nanocatalysts with remarkable catalytic properties have attracted much attention; however, the high cost of these materials limits their industrial applications. Here, we design and prepare Co@SiO2 nanorattles as a mixture of hcp-Co and fcc-Co phases as a substitute. The nanorattles exhibit both superior catalytic activity and high stability for the reduction of p-nitrophenol. The reduction rate nearly follows pseudo-first-order kinetics, and the reaction rate constant is as high as 0.815 min(-1) and is maintained at 0.565 min(-1) even after storing for one month, which is higher than that reported for noble metal nanocatalysts. Such an excellent property can be attributed to the novel two-phase composition and rattle-type structure.
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