Ag-Precipitated CuO Nanospheres for Enhanced Electrochemical Reduction of CO 2

Jinyun Xu (), Ming Li, Liping Zhao, Guoqiang Zhong, Yu Zhang, Ziqi Zhang, Yu Sun, Xudong Hu, Zhe Peng, Yicong Wang, Chunming Zheng () and Xiaohong Sun
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Jinyun Xu: Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, State Key Laboratory of Separation Membrane and Membrane Processes, School of Chemical Engineering, Tiangong University, Tianjin 300387, China
Ming Li: Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, State Key Laboratory of Separation Membrane and Membrane Processes, School of Chemical Engineering, Tiangong University, Tianjin 300387, China
Liping Zhao: Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, State Key Laboratory of Separation Membrane and Membrane Processes, School of Chemical Engineering, Tiangong University, Tianjin 300387, China
Guoqiang Zhong: Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, State Key Laboratory of Separation Membrane and Membrane Processes, School of Chemical Engineering, Tiangong University, Tianjin 300387, China
Yu Zhang: Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, State Key Laboratory of Separation Membrane and Membrane Processes, School of Chemical Engineering, Tiangong University, Tianjin 300387, China
Ziqi Zhang: Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, State Key Laboratory of Separation Membrane and Membrane Processes, School of Chemical Engineering, Tiangong University, Tianjin 300387, China
Yu Sun: Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, State Key Laboratory of Separation Membrane and Membrane Processes, School of Chemical Engineering, Tiangong University, Tianjin 300387, China
Xudong Hu: Key Laboratory of Advanced Ceramics and Machining Technology, School of Materials Science and Engineering, Ministry of Education, Tianjin University, Tianjin 300072, China
Zhe Peng: Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, State Key Laboratory of Separation Membrane and Membrane Processes, School of Chemical Engineering, Tiangong University, Tianjin 300387, China
Yicong Wang: Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, State Key Laboratory of Separation Membrane and Membrane Processes, School of Chemical Engineering, Tiangong University, Tianjin 300387, China
Chunming Zheng: Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, State Key Laboratory of Separation Membrane and Membrane Processes, School of Chemical Engineering, Tiangong University, Tianjin 300387, China
Xiaohong Sun: Key Laboratory of Advanced Ceramics and Machining Technology, School of Materials Science and Engineering, Ministry of Education, Tianjin University, Tianjin 300072, China

Sustainability, 2024, vol. 16, issue 14, 1-14

Abstract: An electrochemical CO 2 reduction reaction (CO 2 RR) is an effective way to reduce greenhouse gases by converting CO 2 into high-value-added chemical products using electricity generated from renewable energy. In this paper, a Cu 2 O spherical catalyst was prepared by ascorbic acid reduction. The precipitated Cu-Ag spherical catalyst (P-CuO-Ag) was successfully prepared by calcining Cu 2 O-Ag with the introduction of an Ag component as the substrate. During the electrochemical reduction of CO 2 , the FE of the P-CuO-Ag catalyst for C 2 H 4 at a potential of −1.1 V vs. RHE was as high as 39.8%, which was nearly twice that of the CuO catalyst, while the local current density J C2H4 for C 2 H 4 reached 6 mA cm −2 . The incorporation of Ag gives the spherical CuO catalyst higher electrochemical activity and better kinetic performance than the catalyst without Ag.

Keywords: electrochemistry; CO 2 reduction; C 2 H 4; nanospheres; bimetallic copper-based derivatives (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2024
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