期刊
CHINESE CHEMICAL LETTERS
卷 33, 期 1, 页码 394-398出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.cclet.2021.05.025
关键词
BiOCl; Ti3C2Tx; Electrocatalytic; Ammonia; N-2 reduction reaction
资金
- National Natural Science Foundation of China [52071171]
- Liaoning Revitalization Talents Program -Pan Deng Scholars [XLYC1802005]
- Liaoning BaiQianWan Talents Program [LNBQW2018B0048]
- Natural Science Fund of Liaoning Province for Excellent Young Scholars [2019-YQ-04]
- Key Project of Scientific Research of the Education Department of Liaoning Province [LZD201902]
- Young Scientific and Technological Talents Project of the Department of Education of Liaoning Province [LQN201903, LQN202008]
- Foundation for Young Scholars of Liaoning University [LDQN2019007]
In this study, a BiOCl-modified two-dimensional titanium carbide MXenes nanocomposite was proposed as a promising electrocatalyst for ambient nitrogen reduction reaction with excellent catalytic performance and superior long-term stability.
Electrochemical synthesis of ammonia has the advantages of low energy consumption and promising environmental protection, as compared to the traditional Haber-Bosch process. However, the commercial utilization of this novel system is limited by the low Faradaic efficiency, poor ammonia yield and high overpotential due to the strong N N bond and the dominant competing reaction of hydrogen evolution reaction (HER). Herein, a BiOCl-modified two-dimensional (2D) titanium carbide MXenes nanocomposite (BiOCl@Ti3C2Tx) is proposed as a promising electrocatalyst for ambient nitrogen (N-2) reduction reaction with excellent catalytic performance and superior long-term stability at low overpotential. In 0.1 mol/L HCl, this catalyst attains a high Faradic efficiency of 11.98% and a NH3 yield of 4.06 mu g h(-1) cm(-2) at -0.10 V (vs. RHE), benefiting from its strong interaction of Bi 6p band with the N 2p orbitals, combined with its large specific surface area and the facile electron transfer. (C) 2021 Published by Elsevier B.V. on behalf of Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences.
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