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Wang G, Wang C, Tian X, Li Q, Liu S, Zhao X, Waterhouse GIN, Zhao X, Lv X, Xu J. Facile Construction of CuFe-Based Metal Phosphides for Synergistic NO x - Reduction to NH 3 and Zn-Nitrite Batteries in Electrochemical Cell. Small 2023:e2311439. [PMID: 38161250 DOI: 10.1002/smll.202311439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Indexed: 01/03/2024]
Abstract
The electrocatalytic nitrite/nitrate reduction reaction (eNO2 RR/eNO3 RR) offer a promising route for green ammonia production. The development of low cost, highly selective and long-lasting electrocatalysts for eNO2 RR/eNO3 RR is challenging. Herein, a method is presented for constructing Cu3 P-Fe2 P heterostructures on iron foam (CuFe-P/IF) that facilitates the effective conversion of NO2 - and NO3 - to NH3 . At -0.1 and -0.2 V versus RHE (reversible hydrogen electrode), CuFe-P/IF achieves a Faradaic efficiency (FE) for NH3 production of 98.36% for eNO2 RR and 72% for eNO3 RR, while also demonstrating considerable stability across numerous cycles. The superior performance of CuFe-P/IF catalyst is due tothe rich Cu3 P-Fe2 P heterstuctures. Density functional theory calculations have shed light on the distinct roles that Cu3 P and Fe2 P play at different stages of the eNO2 RR/eNO3 RR processes. Fe2 P is notably active in the early stages, engaging in the capture of NO2 - /NO3 - , O─H formation, and N─OH scission. Conversely, Cu3 P becomes more dominant in the subsequent steps, which involve the formation of N─H bonds, elimination of OH* species, and desorption of the final products. Finally, a primary Zn-NO2 - battery is assembled using CuFe-P/IF as the cathode catalyst, which exhibits a power density of 4.34 mW cm-2 and an impressive NH3 FE of 96.59%.
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Affiliation(s)
- Guoqiang Wang
- College of Chemistry and Material Science, Shandong Agricultural University, Tai'an, Shandong, 271018, China
| | - Chuanjun Wang
- College of Chemistry and Material Science, Shandong Agricultural University, Tai'an, Shandong, 271018, China
- Key Laboratory of Agricultural Film Application of Ministry of Agriculture and Rural Affairs, Tai'an, Shandong, 271018, China
| | - Xinxin Tian
- Institute of Molecular Science, Key Laboratory of Materials for Energy Conversion and Storage of Shanxi Province, Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, Taiyuan, 030006, China
| | - Qiang Li
- Catalysis Center for Energy Innovation, University of Delaware, 221 Academy St., Newark, DE, 19716, USA
| | - Shenjie Liu
- College of Chemistry and Material Science, Shandong Agricultural University, Tai'an, Shandong, 271018, China
| | - Xiuying Zhao
- College of Chemistry and Material Science, Shandong Agricultural University, Tai'an, Shandong, 271018, China
| | | | - Xin Zhao
- College of Chemistry and Material Science, Shandong Agricultural University, Tai'an, Shandong, 271018, China
| | - Xiaoqing Lv
- College of Chemistry and Material Science, Shandong Agricultural University, Tai'an, Shandong, 271018, China
| | - Jing Xu
- College of Chemistry and Material Science, Shandong Agricultural University, Tai'an, Shandong, 271018, China
- Key Laboratory of Agricultural Film Application of Ministry of Agriculture and Rural Affairs, Tai'an, Shandong, 271018, China
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