Molybdenum/graphene - Based catalyst for hydrogen evolution reaction synthesized by a rapid photothermal method

被引:22
作者
Aravind, S. S. J. [1 ]
Costa, Matthew [1 ]
Pereira, Victor [1 ]
Mugweru, Amos [1 ]
Ramanujachary, Kandalam [1 ]
Vaden, Timothy D. [1 ]
机构
[1] Rowan Univ, Dept Chem & Biochem, Glassboro, NJ 08028 USA
关键词
Hydrogen evolution reaction; Solar photothermal reduction; Molybdenum oxide; Graphene; Reduction catalysis; ACTIVE EDGE SITES; PHOTOCATALYTIC ACTIVITY; GRAPHENE; MOS2; NANOCOMPOSITE; PERFORMANCE; COMPOSITE; KINETICS;
D O I
10.1016/j.ijhydene.2014.05.129
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Catalysis of the hydrogen evolution reaction (HER) is important in the development of an energy economy based on clean hydrogen gas. In this work, we report a new catalyst material for the generation of hydrogen via hydronium reduction. The new material, which consists of MoO2, sulfur, and graphene, was prepared by co-reduction of molybdenum salt and graphite oxide in air in the presence of focused solar radiation. The potential utility of this material for HER catalysis was evaluated by cyclic and linear-sweep voltammograms and compared against a Pt/C commercial catalyst. The MoO2/graphene hybrid nanocomposite exhibits a Tafel slope of 47 mV/dec and hydrogen evolution at a potential only similar to 120 mV more negative than the standard Pt/Carbon catalyst at 10 mA/cm(2) current density. The hydrogen gas generated by the catalytic material was measured using gas chromatography. The simple synthesis and low overpotential suggests that this hybrid composite has potential as an HER catalyst. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:11528 / 11536
页数:9
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