In operando identification of the V<sup>4+</sup>-site-dependent nitrogen reduction reaction of VS<sub><i>x</i></sub>
Rui Zhao, Xinyue Chi, Xiaoxuan Wang, Liang Zhao, Yixiang Zhou, Yuanyuan Xiong, Shuyun Yao, Shiyu Wang, Dewei Wang, Zhenzhen Fu, Zhiyu Yang, Yi-Ming Yan
Abstract
VS 2− x (V 2+ , V 4+ ) and VS 2 (V 4+ ) are prepared to investigate the effect of valence states of vanadium on the catalytic activity. The adsorption of N 2 molecules is exothermic on the V 4+ site, but endothermic on the V 2+ site. The spontaneous formation of *N 2 at V 4+ substantially boosts the ENRR.
Topics & Concepts
Exothermic reactionEndothermic processValence (chemistry)VanadiumCatalysisChemistryNitrogenMoleculeAdsorptionInorganic chemistryPhysical chemistryCrystallographyOrganic chemistryAmmonia Synthesis and Nitrogen ReductionCatalytic Processes in Materials ScienceElectrocatalysts for Energy Conversion