双界面效应促进电催化氨氧化反应。

IF 4.2 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Chemical Communications Pub Date : 2025-10-10 DOI:10.1039/d5cc04506a

Chi Zhang,Xin Cheng,Qikai Shi,Shengming Li,Yue Shi,Yuying Chen,Zhiyan Yuan,Chengjiao Zhang,Jianfeng Ju,Xiaolei Yuan

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引用次数: 0

摘要

金属氧化物/合金/碳复合材料的界面工程可以增强NH3脱氢，同时减弱*N在Pt上的结合。在本工作中，我们利用“金属氧化物-合金”（PtCo-CoOx）和“合金-碳”（PtCo-C）双界面的协同作用，通过简单的方法合成了PtCoOx/C催化剂。PtCo-CoOx和PtCo-C均能协同调节Pt的电子结构，促进氨氧化反应（AOR）。电化学结果表明，与PtCo/C和PtCo SS/C相比，PtCoOx/C的电流密度为18.4 mA cm-2，具有更好的稳定性。研究结果强调了双界面效应在提高AOR中的关键作用。

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Boosting the electrocatalytic ammonia oxidation reaction through dual-interface effects.

Interface engineering of metal oxide/alloy/carbon composites could enhance NH3 dehydrogenation while weakening *N binding on Pt. In this work, we synthesized PtCoOx/C catalysts via a facile method, leveraging the synergistic effects of dual-interfaces - specifically, the "metal oxide-alloy" (PtCo-CoOx) and "alloy-carbon" (PtCo-C) interfaces. Both PtCo-CoOx and PtCo-C could synergistically modulate Pt's electronic structure, promoting the ammonia oxidation reaction (AOR). The electrochemical results reveal that PtCoOx/C achieves a remarkable current density of 18.4 mA cm-2 and exhibits superior stability compared to both PtCo/C and PtCo SS/C. The results highlight the critical role of dual-interface effects in enhancing the AOR.

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来源期刊

Chemical Communications 化学-化学综合

CiteScore

8.60

自引率

4.10%

发文量

2705

审稿时长

1.4 months

期刊介绍： ChemComm (Chemical Communications) is renowned as the fastest publisher of articles providing information on new avenues of research, drawn from all the world''s major areas of chemical research.