An In situ Raman study of intermediate adsorption engineering by high-index facet control during the hydrogen evolution reaction,Inorganic Chemistry Frontiers

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An In situ Raman study of intermediate adsorption engineering by high-index facet control during the hydrogen evolution reaction
Inorganic Chemistry Frontiers ( IF 6.1 ) Pub Date : 2020-03-11 , DOI: 10.1039/d0qi00124d
Jia-sen Zhu _{1,

2,

3,

4} , Hao Yang _{2,

4,

5,

6,

7} , Weihong Zhang _{2,

4,

5,

6,

7} , Yanchao Mao _{4,

8,

9,

10,

11} , Shu-shen Lyu _{2,

4,

12,

13} , Jian Chen _{4,

8,

9,

10,

11}

Affiliation

Electrocatalytic reduction of water is a promising route to produce hydrogen under mild conditions. High-index facet control is one of the most promising ways to achieve excellent catalytic activity for the hydrogen evolution reaction (HER). However, the mechanism of the high-index facet enhancement remains unclear. Here, we combine in situ Raman spectroscopy and theoretical calculations to elucidate the mechanism of HER catalytic performance enhanced by high-index facets on Ti@TiO₂ nanosheets. During the HER process, water molecules tend to adsorb to the high-index facet surface and then reduce to hydrogen. Our work lays the foundation for future exploration of the mechanism of electrocatalysis in transition-metal-based electrocatalysts by in situ Raman spectroscopy for applications in energy and environment-related issues.

中文翻译：

析氢反应过程中高指数面控制对中间吸附工程的原位拉曼研究

水的电催化还原是在温和条件下产生氢气的有希望的途径。高指数方面的控制是实现出色的氢释放反应（HER）催化活性的最有前途的方法之一。但是，高指数方面增强的机制仍不清楚。在这里，我们结合原位拉曼光谱和理论计算来阐明Ti @ TiO ₂纳米片材上的高折射率面增强HER催化性能的机理。在HER过程中，水分子倾向于吸附到高折射率小平面上，然后还原为氢。我们的工作为未来探索过渡金属基电催化剂原位电催化机理奠定了基础。拉曼光谱法在能源和环境相关问题中的应用。

更新日期：2020-03-11

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