Atomically Unraveling the Dependence of Surface Microstructure on Plasmon-induced Hydrogen Evolution on Au/SrTiO3
Atomically Unraveling the Dependence of Surface Microstructure on Plasmon-induced Hydrogen Evolution on Au/SrTiO3
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DOI：
10.1016/j.nanoen.2021.106638
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发表时间：
2021-10
期刊：
影响因子：
17.6
通讯作者：
Bin Zeng;Shengyang Wang;Zhendong Feng;Yejun Xiao;Mingrun Li;Feng Hong;Yue Zhao;Zhaochi Feng;Rengui Li;Can Li
中科院分区：
文献类型：
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作者：
Bin Zeng;Shengyang Wang;Zhendong Feng;Yejun Xiao;Mingrun Li;Feng Hong;Yue Zhao;Zhaochi Feng;Rengui Li;Can Li
等离子体光催化剂中强烈的光-物质相互作用和耦合的催化表面为太阳能-化学能转换提供了独特的机会。界面/表面工程是调控等离子体激元诱导水裂解性能的重要策略。这种情况激发了对具有明确定义的原子表面结构但具有相同的本体结构的等离子体异质结构的需求，用于等离子体诱导的水分裂。在这项工作中，使用Au/SrTiO 3作为原型，我们发现，改变钛终止和锶终止表面的SrTiO 3引起的等离子体激元诱导的析氢活性的显着差异。Sr封端表面的电荷分离效率低于Ti封端表面，而反应动力学速率高于Ti封端表面，从而导致具有Sr封端表面的Au/SrTiO 3具有较高的等离子体激元诱导析氢性能。Au/SrTiO 3的界面/表面结构的调制不仅改变了等离子体光催化剂中的电荷分离，而且改变了表面催化，其中催化过程主导最终的光催化性能。这项工作为设计用于太阳能到化学能转换的高效等离子体光催化剂铺平了道路。
Strong light-matter interaction and coupled catalytic surface in plasmonic photocatalysts offer a unique opportunity for solar-to-chemical energy conversion. The interface/surface engineering is significant strategy to modulate the performance of plasmon-induced water splitting. This situation motivates the demand of a plasmonic heterostructure with well-defined atomic surface structures but identical bulk structure for plasmon-induced water splitting. In this work, using Au/SrTiO3as a prototype, we found that altering the Ti-terminated and Sr-terminated surface of SrTiO3gives rise to a remarkable difference in plasmon-induced hydrogen evolution activity. The efficiency of charge separation at the Sr-terminated surface is inferior compared with which at the Ti-terminated structure, while the reaction kinetics of Sr-terminated surfaces is faster than the counterpart, thus leading to a high plasmon-induced hydrogen evolution performance at Au/ SrTiO3with surfaces of Sr-termination. Modulation of the interface/surface structure of Au/SrTiO3changes not only charge separation but surface catalysis in plasmonic photocatalysts, where the catalysis process dominates the final photocatalytic performance. This work paves a way to design efficient plasmonic photocatalysts for solar-to-chemical energy conversion.