Volume 137, Issue 8 e202422869
Zuschrift

Photo-Driven Ammonia Synthesis via a Proton-Mediated Photoelectrochemical Device

Wan Lin

Wan Lin

CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002 Fujian, P. R. China

University of Chinese Academy of Sciences, Beijing, 100049 P. R. China

Fujian College, University of Chinese Academy of Sciences, Fuzhou, 350002 P. R. China

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Jiajie Chen

Jiajie Chen

CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002 Fujian, P. R. China

College of Chemistry, Fuzhou University, Fuzhou, 350116 Fujian, P. R. China.

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Xiang Zhang

Xiang Zhang

CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002 Fujian, P. R. China

Fujian Science and Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou, 350108 Fujian, P. R. China

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Jing Lin

Jing Lin

CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002 Fujian, P. R. China

Fujian Science and Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou, 350108 Fujian, P. R. China

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Fuwen Lin

Fuwen Lin

CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002 Fujian, P. R. China

College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, 350007 China

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ShenXia Huang

ShenXia Huang

CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002 Fujian, P. R. China

College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, 350007 China

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Prof. Yaobing Wang

Corresponding Author

Prof. Yaobing Wang

CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002 Fujian, P. R. China

University of Chinese Academy of Sciences, Beijing, 100049 P. R. China

Fujian Science and Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou, 350108 Fujian, P. R. China

Fujian College, University of Chinese Academy of Sciences, Fuzhou, 350002 P. R. China

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First published: 07 January 2025

Abstract

N2 reduction reaction (NRR) by light is an energy-saving and sustainable ammonia (NH3) synthesis technology. However, it faces significant challenges, including high energy barriers of N2 activation and unclear catalytic active sites. Herein, we propose a strategy of photo-driven ammonia synthesis via a proton-mediated photoelectrochemical device. We used redox-catalysis covalent organic framework (COF), with a redox site (−C=O) for H+ reversible storage and a catalytic site (porphyrin Au) for NRR. In the proton-mediated photoelectrochemical device, the COF can successfully store e and H+ generated by hydrogen oxidation reaction, forming COF−H. Then, these stored e and H+ can be used for photo-driven NRR (108.97 umol g−1) under low proton concentration promoted by the H-bond network formed between −OH in COF−H and N2 on Au, which enabled N2 hydrogenation and NH3 production, establishing basis for advancing artificial photosynthesis and enhancing ammonia synthesis technology.

Conflict of Interests

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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