Multiple Phases of Molybdenum Carbide as Electrocatalysts for the Hydrogen Evolution Reaction

被引：773
作者：
Wan, Cheng [1 ]
Regmi, Yagya N. [1 ]
Leonard, Brian M. [1 ]
机构：
[1] Univ Wyoming, Dept Chem, Laramie, WY 82071 USA
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2014年 / 53卷 / 25期
关键词：
carbides; electrocatalysis; molybdenum; nanocatalysis; nanoparticles; ACTIVE EDGE SITES; MOS2; CATALYSTS; NANOSHEETS; BORIDE; PLANET;
D O I：
10.1002/anie.201402998
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Molybdenum carbide has been proposed as a possible alternative to platinum for catalyzing the hydrogen evolution reaction (HER). Previous studies were limited to only one phase, beta-Mo2C with an Fe2N structure. Here, four phases of Mo-C were synthesized and investigated for their electrocatalytic activity and stability for HER in acidic solution. All four phases were synthesized from a unique amine-metal oxide composite material including gamma-MoC with a WC type structure which was stabilized for the first time as a phase pure nanomaterial. X-ray photoelectron spectroscopy (XPS) and valence band studies were also used for the first time on gamma-MoC. gamma-MoC exhibits the second highest HER activity among all four phases of molybdenum carbide, and is exceedingly stable in acidic solution.
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收藏
页码：6407 / 6410
页数：4
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