Pt在各种mo基载体上的生长行为及电子调控

IF 10.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Science China Chemistry Pub Date : 2025-01-02 DOI:10.1007/s11426-024-2324-8

Lulu Chen, Yichao Huang, Jiajun Wang, Meihong Liao, Zhiyuan Liu, Meiqi Liu, Hanqing Cai, Lin Wang, Lidong Gao, Dawei Hu, Lianming Zhao, Ning Pu, Zhuangjun Fan

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引用次数: 0

摘要

深入了解铂（Pt）在各种过渡金属载体上的生长行为和电子调控对于开发高性能析氢反应（HER）电催化剂至关重要。本文研究了钼基载体（MoX, X = C， N， P和S）对Pt生长行为和电子调控的影响。我们发现，在MoX载体上，Pt单原子和团簇之间的形成能变化对Pt的生长行为起着关键作用。此外，金属-载体相互作用诱导的Pt电子调控可能反映了Pt-MoX/C中Pt的价态变化。Pt价态中等的Pt- moc /C催化剂表现出最佳的HER活性，在10 mA cm−2时过电位为12.0 mV，质量活性为27.1 a mgPt−1，是20 wt% Pt/C的12.3倍。本研究为高性能HER催化剂的设计提供了建设性的指导。

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Growth behavior and electronic regulation of Pt on various Mo-based supports for hydrogen evolution electrocatalysis

Insight into the growth behavior and electronic regulation of platinum (Pt) on various transition metal supports is paramount in developing high-performing electrocatalysts for hydrogen evolution reactions (HER). Herein, we studied the influence of molybdenum-based supports (MoX, X = C, N, P, and S) on the growth behavior and electronic regulation of Pt. We found that the formation energy variations between Pt single atom and clusters on MoX supports play a pivotal role in the growth behavior of Pt. Moreover, the electronic regulation of Pt induced by metal-support interaction may reflect the valence changes of Pt in Pt-MoX/C. The Pt-MoC/C catalyst with a moderate valence state of Pt exhibits the best HER activity with an overpotential of 12.0 mV at 10 mA cm⁻² and a mass activity of 27.1 A mg_Pt⁻¹, 12.3 times as high as that of commercial 20 wt% Pt/C. This work provides constructive guidance for the design of high-performance HER catalysts.

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来源期刊

Science China Chemistry CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

14.40

自引率

7.30%

发文量

3787

审稿时长

2.2 months

期刊介绍： Science China Chemistry, co-sponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China and published by Science China Press, publishes high-quality original research in both basic and applied chemistry. Indexed by Science Citation Index, it is a premier academic journal in the field. Categories of articles include: Highlights. Brief summaries and scholarly comments on recent research achievements in any field of chemistry. Perspectives. Concise reports on thelatest chemistry trends of interest to scientists worldwide, including discussions of research breakthroughs and interpretations of important science and funding policies. Reviews. In-depth summaries of representative results and achievements of the past 5–10 years in selected topics based on or closely related to the research expertise of the authors, providing a thorough assessment of the significance, current status, and future research directions of the field.