用于高效电化学氢进化反应的化学生长 Bi2MoX6（X = O、S 和 Se）纳米结构

IF 4.1 3区化学 Q1 CHEMISTRY, ANALYTICAL

Journal of Electroanalytical Chemistry Pub Date : 2024-11-20 DOI:10.1016/j.jelechem.2024.118823

Sandesh H. Narwade , Balaji G. Ghule , Nanasaheb M. Shinde , Rushikesh R. Suryawanshi , Kyeongnam Kang , Ji-Hyun Jang , Arvind H. Jadhav , Rajaram S. Mane

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引用次数: 0

摘要

在此，我们介绍了一种有效的化学浴沉积（CBD）Bi2MoX6（X = O、S 和 Se）电催化剂的制备方法，以实现高效的电化学氢进化反应（HER）活性。为了提高 Bi2MoO6（BMO）电极的电化学活性，本文广泛研究了硫化和硒化对湿化学合成 BMO 的影响。这些在镍泡沫上开发的 BMO、Bi2MoS6 (BMS) 和 Bi2MoSe6 (BMSe) 纳米结构是通过温和的两阶段反应过程合成的；在 BMO 的硫化-硒化过程之后是 CBD。与 BMO 和 BMS 电催化剂相比，BMSe 具有更高的 HER 活性，在 10 mA cm-2 时过电位更低，约为 120 mV，塔菲尔斜率值（57 mV dec-1）也更低。通过表面形态分析，BMO、BMS 和 BMSe 电催化剂分别呈现出绣球花型花瓣、纳米片和大肠杆菌型表面形态。因此，本文给出了在室温（25-27 °C）下通过硫化/软化过程提高 BMO 的电化学 HER 活性的简便方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Chemically grown Bi2MoX6 (X = O, S, and Se) nanostructures for efficient electrochemical hydrogen evolution reaction

Here, we present the fabrication of an effective and chemical bath deposition (CBD) of Bi₂MoX₆ (X = O, S, and Se) electrocatalyst for efficient electrochemical hydrogen evolution reaction (HER) activity. To enhance the electrochemical activity of Bi₂MoO₆ (BMO) electrode, the influence of sulfurization and selenization on the wet chemically synthesized BMO has been extensively studied here. These BMO, Bi₂MoS₆ (BMS), and Bi₂MoSe₆ (BMSe) nanostructured developed on nickel-foam are synthesized by a mild two-stage reaction process; a CBD following a sulfo-selenization procedure on BMO. Compared to BMO and BMS electrocatalysts, the BMSe has shown a higher HER activity through a lower overpotential about 120 mV at 10 mA cm⁻² and a lower value of Tafel slope (57 mV dec⁻¹). Surface morphology analysis endows hydrangea flower-type petals, nanosheets, and E. coli bacteria-type surface morphologies for BMO, BMS, and BMSe electrocatalysts, respectively. Thus, this article gives an easy tactic for enhancing the electrochemical HER activity of the BMO through the process of sulfurization/selenization at room temperature (25–27 °C).

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来源期刊

Journal of Electroanalytical Chemistry 化学-电化学

CiteScore

7.80

自引率

6.70%

发文量

912

审稿时长

2.4 months

期刊介绍： The Journal of Electroanalytical Chemistry is the foremost international journal devoted to the interdisciplinary subject of electrochemistry in all its aspects, theoretical as well as applied. Electrochemistry is a wide ranging area that is in a state of continuous evolution. Rather than compiling a long list of topics covered by the Journal, the editors would like to draw particular attention to the key issues of novelty, topicality and quality. Papers should present new and interesting electrochemical science in a way that is accessible to the reader. The presentation and discussion should be at a level that is consistent with the international status of the Journal. Reports describing the application of well-established techniques to problems that are essentially technical will not be accepted. Similarly, papers that report observations but fail to provide adequate interpretation will be rejected by the Editors. Papers dealing with technical electrochemistry should be submitted to other specialist journals unless the authors can show that their work provides substantially new insights into electrochemical processes.