Synthesis and evaluation of MoWCoS/G and MoWCuS/G as new transition metal dichalcogenide nanocatalysts for electrochemical hydrogen evolution reaction

被引：19

作者：

Askari, Mohammad Bagher ^{[1
,3
]}

Beheshti-Marnani, Amirkhosro ^{[2
]}

Banizi, Zoha Tavakoli ^{[1
]}

Seifi, Majid ^{[1
]}

Zadeh, Mohammad Hassan Ramezan ^{[1
]}

机构：

[1] Univ Guilan, Dept Phys, Fac Sci, Rasht 413351914, Iran

[2] Payame Noor Univ, Dept Chem, POB 19395-3697, Tehran, Iran

[3] Payame Noor Univ, Dept Phys, POB 19395-3697, Tehran, Iran

来源：

CHEMICAL PHYSICS LETTERS | 2018年 / 691卷

关键词：

Dichalcogenide; HER; Graphene; Nanocomposite; Nanocatalyst; MOS2; NANOSHEETS; EFFICIENT; COMPOSITE; CATALYST; GRAPHENE; FILMS; SITE;

D O I：

10.1016/j.cplett.2017.10.041

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：

New nanocomposites based on transition metal dichalcogenides, MoWCoS and MoWCuS, were synthesized through one step hydrothermal method. X-ray diffraction (XRD) and energy dispersive X-ray (EDX) techniques as well as field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) images confirmed the synthesis of nanocomposites. For investigation of hydrogen evolution reaction (HER) properties of new nanocomposites, linear sweep voltammetry (LSV) was applied for this purpose. According to the results of similar previous works, the prepared nanocomposites showed promising HER properties as low overpotential equal to 41.4 mV/dec for MoWCoS hybridized with reduced graphene (G) and a little higher one equal to 49 mV/dec for MoWCuS hybridized with reduced graphene. Based on obtained Tafel slopes 38 and 53 mV/dec for MoWCoS/G and MoWCuS/G, respectively, the "Heyrovsky-Volmer" mechanism was suggested for the new HER three component nanocatalysts as the first effort to this purpose. (C) 2017 Published by Elsevier B.V.

引用

页码：243 / 249

页数：7

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