High‐Performance Electrochemical NO Reduction into NH<sub>3</sub> by MoS<sub>2</sub> Nanosheet

Longcheng Zhang(University of Electronic Science and Technology of China), Jie Liang(University of Electronic Science and Technology of China), Yuanyuan Wang(Henan University), Ting Mou(University of Electronic Science and Technology of China), Yiting Lin(University of Electronic Science and Technology of China), Luchao Yue(University of Electronic Science and Technology of China), Tingshuai Li(University of Electronic Science and Technology of China), Qian Liu(Chengdu University), Yonglan Luo(Chengdu University), Bao‐Liang Song(Shandong Normal University), Bo Tang(Shandong Normal University), Yang Liu(Henan Normal University), Shuyan Gao(Henan Normal University), Abdulmohsen Ali Alshehri(King Abdulaziz University), Xiaodong Guo(Sichuan University), Dongwei Ma(Henan University), Xuping Sun(University of Electronic Science and Technology of China)
Angewandte Chemie International Edition
September 14, 2021
10.1002/anie.202110879
Cited by 311

Abstract

Abstract Electrochemical reduction of NO not only offers an attractive alternative to the Haber–Bosch process for ambient NH 3 production but mitigates the human‐caused unbalance of nitrogen cycle. Herein, we report that MoS 2 nanosheet on graphite felt (MoS 2 /GF) acts as an efficient and robust 3D electrocatalyst for NO‐to‐NH 3 conversion. In acidic electrolyte, such MoS 2 /GF attains a maximal Faradaic efficiency of 76.6 % and a large NH 3 yield of up to 99.6 μmol cm −2 h −1 . Using MoS 2 nanosheet‐loaded carbon paper as the cathode, a proof‐of‐concept device of Zn‐NO battery was assembled to deliver a discharge power density of 1.04 mW cm −2 and an NH 3 yield of 411.8 μg h −1 mg cat. −1 . Calculations reveal that the positively charged Mo‐edge sites facilitate NO adsorption/activation via an acceptance–donation mechanism and disfavor the binding of protons and the coupling of N−N bond.

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