Catalysis of hydrogen evolution reaction by in situ electrodeposited amorphous molybdenum sulfide at soft interfaces

被引:22
作者
Aslan, E. [1 ]
Patir, I. H. [2 ]
机构
[1] Selcuk Univ, Dept Biochem, TR-42250 Konya, Turkey
[2] Selcuk Univ, Dept Biotechnol, TR-42250 Konya, Turkey
关键词
Biphasic catalysis; Energy conversion; Liquid-liquid interfaces; Electrodeposition; Electrocatalytic hydrogen evolution; LIQUID/LIQUID INTERFACES; LIQUID INTERFACES; H-2; EVOLUTION; EFFICIENT; MOS2; NANOPARTICLES; WATER; MECHANISM; ELECTROCHEMISTRY; ELECTROCATALYST;
D O I
10.1016/j.mtener.2021.100742
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
Amorphous molybdenum sulfide (MoSx) is considered a suitable alternative to Pt for catalyzing the hydrogen evolution reaction (HER) in electrochemical water splitting because of its simple and inexpensive preparation process. Herein, the template-free in situ electrodeposition of amorphous MoSx at freestanding soft interfaces is reported for the first time. The biphasic catalysis of the HER by the electrodeposited MoSx at the water-1,2-dichloroethane interface with decamethylferrocene (DMFc) was also investigated. DMFc acts as an organic sacrificial reducing agent for both (NH4)(2)MoS4 and protons to afford MoSx and H-2, respectively. The nucleation of MoSx and the HER was examined using both four-electrode voltammetry and the biphasic reactions at the liquid-liquid interfaces. MoSx particles were collected from the interface and subjected to structural and morphological characterization. The HER kinetics was investigated using the UV-Vis absorption method with varying DMFc(+) concentrations. The amount of H-2 evolved and the reaction rates obtained over the in situ electrodeposited MoSx catalyst were compared with those obtained over electrodeposited metallic nanoparticles and commercial MoS2 catalysts. (C) 2021 Elsevier Ltd. All rights reserved.
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页数:9
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