钒掺杂对碳化钼-还原氧化石墨烯纳米复合电催化剂水析氢活性的影响

IF 0.7 4区化学 Q4 CHEMISTRY, MULTIDISCIPLINARY Theoretical and Experimental Chemistry Pub Date : 2022-03-09 DOI:10.1007/s11237-022-09711-y

D. O. Mazur, Ya. I. Kurys, V. G. Koshechko, V. D. Pokhodenko

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引用次数: 0

摘要

研究发现，含聚吡罗、H4PVMo11O40和还原氧化石墨烯(rGO)的杂化前驱体的热解有助于制备基于v掺杂Mo2C和N, p掺杂rGO的纳米复合材料，这是一种很有前途的析氢反应(HER)电催化剂。研究表明，与未取代的H3PMo12O40相比，钒的掺杂提高了HER中电催化剂的活性(无论是在酸性还是碱性电解质中)。特别是，它表现在析氢过电位的显著降低，过程开始电位的阳极位移，以及Tafel斜率依赖性的降低。

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Influence of Vanadium Doping on the Activity of Nanocomposite Electrocatalysts Based on Molybdenum Carbide and Reduced Graphene Oxide in the Process of Hydrogen Evolution from Water

It has been found that pyrolysis of hybrid precursors containing polypyrrole, H₄PVMo₁₁O₄₀, and reduced graphene oxide (rGO) contributes to the production of nanocomposites based on V-doped Mo₂C and N,P-doped rGO, which are promising electrocatalysts for hydrogen evolution reaction (HER). It has been shown that vanadium doping increases the activity of electrocatalysts in HER (both in acidic and alkaline electrolytes) when compared to the analog obtained by unsubstituted H₃PMo₁₂O₄₀. In particular, it is manifested in a significant reduction of hydrogen evolution overpotential, anodic displacement of a process onset potential, and reduction of a Tafel slope dependence.

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来源期刊

Theoretical and Experimental Chemistry CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

1.60

自引率

10.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Theoretical and Experimental Chemistry is a journal for the rapid publication of research communications and reviews on modern problems of physical chemistry such as: a) physicochemical bases, principles, and methods for creation of novel processes, compounds, and materials; b) physicochemical principles of chemical process control, influence of external physical forces on chemical reactions; c) physical nanochemistry, nanostructures and nanomaterials, functional nanomaterials, size-dependent properties of materials.