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Bai H, Wang F, Ding Q, Xie W, Li H, Zheng G, Fan W. Construction of Frustrated Lewis Pair Sites in CeO 2-C/BiVO 4 for Photoelectrochemical Nitrate Reduction. Inorg Chem 2023; 62:2394-2403. [PMID: 36690351 DOI: 10.1021/acs.inorgchem.2c04208] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Photoelectrochemical nitrate reduction reaction (PEC NIRR) could convert the harmful pollutant nitrate (NO3-) to high-value-added ammonia (NH3) under mild conditions. However, the catalysts are currently hindered by the low catalytic activity and slow kinetics. Here, we reported a heterostructure composed of CeO2 and BiVO4, and the "frustrated Lewis pairs (FLPs)" concept was introduced for understanding the role of Lewis acids and Lewis bases on PEC NIRR. The electron density difference maps indicated that FLPs were significantly active for the adsorption and activation of NO3-. Furthermore, carbon (C) improved the carrier transport ability and kinetics, contributing to the NH3 yield of 21.81 μg h-1 cm-2. The conversion process of NO3- to NH3 was tracked by 15NO3- and 14NO3- isotopic labeling. Therefore, this study demonstrated the potential of CeO2-C/BiVO4 for efficient PEC NIRR and provided a unique mechanism for the adsorption and activation of NO3- over FLPs.
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Affiliation(s)
- Hongye Bai
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Fengfeng Wang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Qijia Ding
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Wanru Xie
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Hongping Li
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, PR China
| | - Guoli Zheng
- Department Key Laboratory of Catalysis, South-Central University for Nationalities, Wuhan 430074, China
| | - Weiqiang Fan
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China.,Jiangsu Province and Education Ministry Co-Sponsored Synergistic Innovation Center of Modern Agricultural Equipment, Zhenjiang 212013, Jiangsu, PR China
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Bai H, Wang F, Liu Y, Ma C, Ding J, Fan W. Decoration of Ni on Cu2O with kinetic improvement for photoelectrochemical nitrogen reduction. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Lv C, Liu J, Lee C, Zhu Q, Xu J, Pan H, Xue C, Yan Q. Emerging p-Block-Element-Based Electrocatalysts for Sustainable Nitrogen Conversion. ACS NANO 2022; 16:15512-15527. [PMID: 36240028 DOI: 10.1021/acsnano.2c07260] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Artificial nitrogen conversion reactions, such as the production of ammonia via dinitrogen or nitrate reduction and the synthesis of organonitrogen compounds via C-N coupling, play a pivotal role in the modern life. As alternatives to the traditional industrial processes that are energy- and carbon-emission-intensive, electrocatalytic nitrogen conversion reactions under mild conditions have attracted significant research interests. However, the electrosynthesis process still suffers from low product yield and Faradaic efficiency, which highlight the importance of developing efficient catalysts. In contrast to the transition-metal-based catalysts that have been widely studied, the p-block-element-based catalysts have recently shown promising performance because of their intriguing physiochemical properties and intrinsically poor hydrogen adsorption ability. In this Perspective, we summarize the latest breakthroughs in the development of p-block-element-based electrocatalysts toward nitrogen conversion applications, including ammonia electrosynthesis from N2 reduction and nitrate reduction and urea electrosynthesis using nitrogen-containing feedstocks and carbon dioxide. The catalyst design strategies and the underlying reaction mechanisms are discussed. Finally, major challenges and opportunities in future research directions are also proposed.
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Affiliation(s)
- Chade Lv
- School of Materials Science and Engineering, Nanyang Technological University, 639798 Singapore
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Jiawei Liu
- School of Materials Science and Engineering, Nanyang Technological University, 639798 Singapore
| | - Carmen Lee
- School of Materials Science and Engineering, Nanyang Technological University, 639798 Singapore
| | - Qiang Zhu
- Institute of Materials Research and Engineering, A*STAR, 2 Fusionopolis Way, Innovis, #08-03, 138634 Singapore
| | - Jianwei Xu
- Institute of Materials Research and Engineering, A*STAR, 2 Fusionopolis Way, Innovis, #08-03, 138634 Singapore
- Institute of Sustainability for Chemicals, Energy and Environment, Agency for Science, Technology and Research (A*STAR), 1 Pesek Road, Jurong Island, 627833 Singapore
| | - Hongge Pan
- Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an 710021, China
| | - Can Xue
- School of Materials Science and Engineering, Nanyang Technological University, 639798 Singapore
| | - Qingyu Yan
- School of Materials Science and Engineering, Nanyang Technological University, 639798 Singapore
- Institute of Materials Research and Engineering, A*STAR, 2 Fusionopolis Way, Innovis, #08-03, 138634 Singapore
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Hui X, Wang L, Yao Z, Hao L, Sun Z. Recent progress of photocatalysts based on tungsten and related metals for nitrogen reduction to ammonia. Front Chem 2022; 10:978078. [PMID: 36072702 PMCID: PMC9441816 DOI: 10.3389/fchem.2022.978078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Accepted: 07/15/2022] [Indexed: 11/22/2022] Open
Abstract
Photocatalytic nitrogen reduction reaction (NRR) to ammonia holds a great promise for substituting the traditional energy-intensive Haber–Bosch process, which entails sunlight as an inexhaustible resource and water as a hydrogen source under mild conditions. Remarkable progress has been achieved regarding the activation and solar conversion of N2 to NH3 with the rapid development of emerging photocatalysts, but it still suffers from low efficiency. A comprehensive review on photocatalysts covering tungsten and related metals as well as their broad ranges of alloys and compounds is lacking. This article aims to summarize recent advances in this regard, focusing on the strategies to enhance the photocatalytic performance of tungsten and related metal semiconductors for the NRR. The fundamentals of solar-to-NH3 photocatalysis, reaction pathways, and NH3 quantification methods are presented, and the concomitant challenges are also revealed. Finally, we cast insights into the future development of sustainable NH3 production, and highlight some potential directions for further research in this vibrant field.
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Affiliation(s)
| | | | | | | | - Zhenyu Sun
- *Correspondence: Leiduan Hao, ; Zhenyu Sun,
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