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Nano Research

Article Title

FeOOH quantum dots decorated graphene sheet: An efficient electrocatalyst for ambient N2 reduction

Authors

Xiaojuan Zhu, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China
Jinxiu Zhao, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China
Lei Ji, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China
Tongwei Wu, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China
Ting Wang, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China
Shuyan Gao, School of Materials Science and Engineering, Henan Normal University, Xinxiang 453007, China
Abdulmohsen Ali Alshehri, Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
Khalid Ahmed Alzahrani, Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
Yonglan Luo, Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China
Yimo Xiang, No. 12 Middle School, Chengdu 610041, China
Baozhan Zheng, College of Chemistry, Sichuan University, Chengdu 610064, China
Xuping Sun, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China

Keywords

FeOOH quantum dots decorated graphene sheet, N2 reduction reaction, NH3 electrosynthesis, ambient conditions

Abstract

Electrochemical N2 reduction offers a promising alternative to the Haber–Bosch process for sustainable NH3 synthesis at ambient conditions, but it needs efficient catalysts for the N2 reduction reaction (NRR). Here, we report that FeOOH quantum dots decorated graphene sheet acts as a superior catalyst toward enhanced electrocatalytic N2 reduction to NH3 under ambient conditions. In 0.1 M LiClO4, this hybrid attains a large NH3 yield rate and a high Faradaic efficiency of 27.3 μg·h−1·mg−1cat. and 14.6% at −0.4 V vs. reversible hydrogen electrode, respectively, rivalling the current efficiency of all Fe-based NRR electrocatalysts in aqueous media. It also shows strong durability during the electrolytic process.

Graphical Abstract

Publisher

Tsinghua University Press

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