堆积
催化作用
Pourbaix图
化学
吸附
氮气
限制
Atom(片上系统)
氧化还原
配体(生物化学)
还原(数学)
计算化学
物理化学
无机化学
电化学
电极
有机化学
数学
计算机科学
机械工程
生物化学
受体
几何学
工程类
嵌入式系统
作者
Mingxin Qin,Lanlan Chen,Wenhua Zhang,Jinlong Yang
标识
DOI:10.1021/acs.jpclett.3c03213
摘要
The catalytic activity of single-atom catalysts (SACs) is crucially affected by the actual ligand configurations under the reaction condition; thus, carefully considering the reaction condition is crucial for the theoretical design of SACs. With single metal atoms supported by g-C3N4 as a model system, a self-consistent screening framework is proposed for the theoretical design of SACs with respect to the nitrogen reduction reaction (NRR). Pourbaix diagrams are constructed on the basis of various co-adsorption configurations of N2, H, and OH. Possible stable configurations containing N2 under the expected reaction condition are considered to obtain the limiting potential of NRR, and the stability of the configuration at the calculated UL is rechecked. With this framework, AC stacking of double-layer g-C3N4-supported Nb and AA stacking and AB stacking of double-layer g-C3N4-supported W are predicted to exhibit superior NRR activity with UL values of −0.36, −0.45, and −0.52 V, respectively. This procedure can be widely applied to the screening of SACs for electrocatalytic reactions.
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