Yang Weijie, Jia Zhenhe, Chen Liugang, Zhou Binghui, Zhang Di, Han Yulan, Gao Zhengyang, Li Hao
Department of Power Engineering, School of Energy, Power and Mechanical Engineering, North China Electric Power University, Baoding 071003, China.
Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, Sendai 980-8577, Japan.
Chem Commun (Camb). 2023 Sep 7;59(72):10761-10764. doi: 10.1039/d3cc03208f.
The often-overlooked electrocatalytic bridge-site poisoning of the emerging dual-atom catalysts (DACs) has aroused broad concerns very recently. Herein, based on surface Pourbaix analysis, we identified a significant change in the electrochemistry-induced surface coverages of DACs upon changing the intermetal distance. We found a pronounced effect of the intermetal distance on the electrochemical potential window and the type of pre-covered adsorbate, suggesting an interesting avenue to tune the electrocatalytic function of DACs.
新兴的双原子催化剂（DACs）中常常被忽视的电催化桥位中毒问题最近引起了广泛关注。在此，基于表面Pourbaix分析，我们发现改变金属间距离时，DACs的电化学诱导表面覆盖率会发生显著变化。我们发现金属间距离对电化学势窗和预覆盖吸附质的类型有显著影响，这为调节DACs的电催化功能提供了一条有趣的途径。
