硝酸盐
催化作用
氨
氨生产
吸附
密度泛函理论
化学
氢
无机化学
纳米技术
化学工程
材料科学
计算化学
物理化学
有机化学
工程类
作者
Qingchao Fang,Hanqing Yin,Xin Mao,Yun Han,Yan Chen,Anthony P. O’Mullane,Aijun Du
标识
DOI:10.1021/acs.jpclett.2c03900
摘要
Electrocatalytic reduction of nitrate to ammonia has become a popular approach for wastewater treatment and ammonia production. However, the development of highly efficient electrocatalysts remains a great challenge. Herein, we systematically studied the potential of InBi for nitrate reduction to ammonia (NRA) based on density functional theory (DFT) calculations. Our results reveal that InBi exhibits high activity for NRA via an O-end pathway, where the free energy evolution of all intermediates is downhill in the most favorable elementary steps. The activation of nitrate originates from the strong orbital hybridization between oxygen and indium atoms, leading to an enhanced charge transfer as well as NO3– adsorption. In particular, the competing hydrogen evolution reaction (HER) is effectively suppressed due to the weak adsorption of proton. Our study not only proves the great electrocatalytic potential of InBi as a novel catalyst for NRA but also points out a new way to design NRA electrocatalysts for practical applications.
科研通智能强力驱动
Strongly Powered by AbleSci AI