Ni2P active site ensembles tune electrocatalytic nitrate reduction selectivity

被引：3

作者：

Nishiwaki, Emily ^{[1
]}

Rice, Peter S. ^{[2
]}

Kuo, Ding-Yuan ^{[1
]}

Dou, Florence Y. ^{[1
]}

Pyka, Anthony ^{[3
]}

Reid, Bryce ^{[3
]}

Nguyen, Hao A. ^{[1
]}

Stuve, Eric M. ^{[3
]}

Raugei, Simone ^{[2
]}

Cossairt, Brandi M. ^{[1
]}

机构：

[1] Univ Washington, Dept Chem, Seattle, WA 98195 USA

[2] Pacific Northwest Natl Lab, Washington, WA 99352 USA

[3] Univ Washington, Dept Chem Engn, Seattle, WA 98195 USA

来源：

CHEMICAL COMMUNICATIONS | 2024年 / 60卷 / 54期

基金：

美国国家科学基金会;

关键词：

HYDROGEN EVOLUTION; REACTION-MECHANISM; NICKEL PHOSPHIDE; CO2; REDUCTION; SURFACE; NANOPARTICLES; CATALYST; INSIGHT;

D O I：

10.1039/d4cc01834f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We demonstrate that active site ensembles on transition metal phosphides tune the selectivity of the nitrate reduction reaction. Using Ni2P nanocrystals as a case study, we report a mechanism involving competitive co-adsorption of H* and NOx* intermediates. A near 100% faradaic efficiency for nitrate reduction over hydrogen evolution is observed at -0.4 V, while NH3 selectivity is maximized at -0.2 V vs. RHE.

引用

页码：6941 / 6944

页数：4

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