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Zong W, Gao H, Ouyang Y, Chu K, Guo H, Zhang L, Zhang W, Chen R, Dai Y, Guo F, Zhu J, Zhang Z, Ye C, Miao YE, Hofkens J, Lai F, Liu T. Bio-Inspired Aerobic-Hydrophobic Janus Interface on Partially Carbonized Iron Heterostructure Promotes Bifunctional Nitrogen Fixation. Angew Chem Int Ed Engl 2023:e202218122. [PMID: 37081751 DOI: 10.1002/anie.202218122] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 04/11/2023] [Accepted: 04/19/2023] [Indexed: 04/22/2023]
Abstract
Overwhelming competition from hydrogen/oxygen evolution reactions and low solubility of N2 in aqueous systems drain on selectivity and activity on nitrogen fixation reaction. Herein, we design an aerobic-hydrophobic Janus structure by introducing fluorinated modification on porous carbon nanofibers embedded with partially carbonized iron heterojunctions (Fe3C/Fe@PCNF-F). The simulations prove that the Janus structure can keep the internal Fe3C/Fe@PCNF-F away from water infiltration and endow a N2 molecule-concentrating effect, suppressing the competing reactions and overcoming the mass-transfer limitations to build a robust "quasi-solid-gas" state micro-domain around the catalyst surface. In this proof-of-concept system, the Fe3C/Fe@PCNF-F exhibits excellent electrocatalytic performance for nitrogen fixation (NH3 yield rate up to 29.2 μg h-1 mg-1cat. and Faraday efficiency (FE) up to 27.8% in NRR; NO3- yield rate up to 15.7 μg h-1 mg-1cat. and FE up to 3.4 % in NOR).
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Affiliation(s)
- Wei Zong
- Jiangnan University, School of Chemical and Material Engineering, CHINA
| | - Haiqi Gao
- Nanjing University of Posts and Telecommunications, Institute of Advanced Materials, CHINA
| | - Yue Ouyang
- Donghua University, College of Materials Science and Engineering, CHINA
| | - Kaibin Chu
- Jiangnan University, School of Chemical and Material Engineering, CHINA
| | - Hele Guo
- KU Leuven University: Katholieke Universiteit Leuven, Department of Chemistry, BELGIUM
| | - Leiqian Zhang
- Jiangnan University, School of Chemical and Material Engineering, CHINA
| | - Wei Zhang
- University College London, Department of Chemistry, UNITED KINGDOM
| | - Ruwei Chen
- University College London, Department of Chemistry, UNITED KINGDOM
| | - Yuhang Dai
- University College London, Department of Chemistry, UNITED KINGDOM
| | - Fei Guo
- University College London, Department of Chemistry, UNITED KINGDOM
| | - Jiexin Zhu
- University College London, Department of Chemistry, UNITED KINGDOM
| | - Zhenfang Zhang
- University College London, Department of Chemistry, UNITED KINGDOM
| | - Chumei Ye
- University of Cambridge, Department of Materials Science and Metallurgy, UNITED KINGDOM
| | - Yue-E Miao
- Donghua University, College of Materials Science and Engineering, CHINA
| | - Johan Hofkens
- KU Leuven: Katholieke Universiteit Leuven, Department of Chemistry, BELGIUM
| | - Feili Lai
- KU Leuven: Katholieke Universiteit Leuven, Department of Chemistry, Celestijnenlaan 200F, Leuven, BELGIUM
| | - Tianxi Liu
- Jiangnan University, School of Chemical and Material Engineering, CHINA
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