期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 147, 期 -, 页码 330-339出版社
ELSEVIER
DOI: 10.1016/j.apcatb.2013.09.006
关键词
Copper; Nanoparticles; Multi-walled carbon nanotubes; Electrocatalyst; Nitrobenzene
资金
- Flemish Agency for Innovation by Science and Technology
- VITO Research Center
- Flemish Hercules Stichting [HER/08/25]
- IAP-PAI Research Program
Cu/CuxO and Pt nanoparticles supported on multi-walled carbon nanotubes (MWCNTs) were studied as electrocatalysts for the reduction of nitrobenzene in a half-cell set-up. This reaction not only produces valuable chemicals, but has the potential to generate electricity if applied in a fuel cell device. MWCNTs with and without functional groups were investigated as supports for the nanoparticles, employing either ethylene glycol (EG) or H-2 gas as reductant. Cu/CuxO nanoparticles supported on pristine multi-walled carbon nanotubes prepared using H-2 as reductant (Cu/MWCNT-H-2) were identified as the best electrocatalyst for the reduction of nitrobenzene on the basis of its onset potential and of the number of electrons transferred per nitrobenzene molecule. This material consists of well-dispersed Cu/CuxO nanoparticles with an average size of 8 nm. The stability of Cu/MWCNT-H-2 was tested by cyclic voltammetry (CV) for 1000 cycles, showing that the activity of this electrocatalyst does not deteriorate over time. The electrochemical reduction of nitrobenzene over Cu/MWCNT-H-2 in acidic ethanolic medium at -0.62 V vs. Fc/Fc(+) led to 44% conversion with an overall selectivity toward azoxybenzene (AOB) of 82%. (C) 2013 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据