Structure and catalytic properties of MoSex thin films containing Mo nanoparticles in electrochemical production of hydrogen in solution View Full Text


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Article Info

DATE

2016-03

AUTHORS

R. I. Romanov, V. Yu. Fominski, A. V. Shelyakov, G. V. Golubkov

ABSTRACT

The introduction of molybdenum nanoparticles in MoSex thin films formed by pulsed laser deposition led to changes in the film structure. The base planes of the layered atomic packing of the MoSeх matrix around Mo nanoparticles rotated; as a consequence, the edge sites that formed during the “breaking” of the Se–Mo–Se layered atomic packing came out to the film surface. At high nanoparticle concentrations, this effect led to high density of edge sites possessing increased catalytic activity (compared with that of the base planes) for initiating the electrochemical evolution of hydrogen in a 0.5 M H2SO4 solution. Voltammetric measurements at room temperature showed that when the carbon cathode was coated with MoSex thin films under optimum conditions, the hydrogen overvoltage considerably decreased, and the cathodic current increased. The results indicate that developments in the field of preparation of nanostructured electrodes based on layered transition metal dichalcogenides show promise as an alternative to expensive electrodes based on platinum group metals for electrocatalysts of hydrogen evolution. More... »

PAGES

238-244

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/s1990793116020238

DOI

http://dx.doi.org/10.1134/s1990793116020238

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1039686820


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