Volume 19, Issue 21 2208117
Research Article

The Precision Defect Engineering with Nonmetallic Element Refilling Strategy in g-C3N4 for Enhanced Photocatalytic Hydrogen Production

Yujie Liu

Yujie Liu

Key Laboratory for Advanced Materials, Shanghai Engineering Research Center for Multi media Environmental Catalysis and Resource Utilization, Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science & Technology, Shanghai, 200237 P. R. China

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Muhammad Tayyab

Muhammad Tayyab

Key Laboratory for Advanced Materials, Shanghai Engineering Research Center for Multi media Environmental Catalysis and Resource Utilization, Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science & Technology, Shanghai, 200237 P. R. China

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Wenkai Pei

Wenkai Pei

National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery, State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science & Technology, Shanghai, 200237 P. R. China

Shanghai Institute of Pollution Control and Ecological Security, Tongji University, Shanghai, 200092 P. R. China

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Liang Zhou

Corresponding Author

Liang Zhou

National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery, State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science & Technology, Shanghai, 200237 P. R. China

Shanghai Institute of Pollution Control and Ecological Security, Tongji University, Shanghai, 200092 P. R. China

E-mail: [email protected]; [email protected]

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Juying Lei

Juying Lei

National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery, State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science & Technology, Shanghai, 200237 P. R. China

Shanghai Institute of Pollution Control and Ecological Security, Tongji University, Shanghai, 200092 P. R. China

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Lingzhi Wang

Lingzhi Wang

Key Laboratory for Advanced Materials, Shanghai Engineering Research Center for Multi media Environmental Catalysis and Resource Utilization, Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science & Technology, Shanghai, 200237 P. R. China

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Yongdi Liu

Yongdi Liu

National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery, State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science & Technology, Shanghai, 200237 P. R. China

Shanghai Institute of Pollution Control and Ecological Security, Tongji University, Shanghai, 200092 P. R. China

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Jinlong Zhang

Corresponding Author

Jinlong Zhang

Key Laboratory for Advanced Materials, Shanghai Engineering Research Center for Multi media Environmental Catalysis and Resource Utilization, Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science & Technology, Shanghai, 200237 P. R. China

E-mail: [email protected]; [email protected]

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First published: 25 February 2023
Citations: 12

Abstract

Traditional defect engineering and doping strategies are considered effective means for improving H2 evolution, but the uncontrollability of the modification process does not always lead to efficient activity. A defect-induced heteroatom refilling strategy is used here to synthesize heteroatoms introduced carbon nitride by precisely controlling the “introduction” sites on efficient N1 sites. Density functional theory calculations show that the refilling of B, P, and S sites have stronger H2O adsorption and dissociation capacity than traditional doping, which makes it an optimal H2 production path. The large internal electric field strength of heteroatom-refilled catalysts leads to fast electron transfer and the hydrogen production of the best sample is up to 20.9 mmol g−1 h−1. This work provides a reliable and clear insight into controlled defect engineering of photocatalysts and a universal modification strategy for typical heteroatom and co-catalyst systems for H2 production.

Conflict of Interest

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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