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Nano Research

Article Title

Bottom-up fabrication of graphitic carbon nitride nanosheets modified with porphyrin via covalent bonding for photocatalytic H2 evolution

Authors

Shufang Tian, Key Laboratory for Special Functional Materials of Ministry of Education, National & Local Joint Engineering Research Center for High-efficiency Display and Lighting Technology, School of Materials Science and Engineering, and Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng 475004, China
Sudi Chen, Key Laboratory for Special Functional Materials of Ministry of Education, National & Local Joint Engineering Research Center for High-efficiency Display and Lighting Technology, School of Materials Science and Engineering, and Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng 475004, China
Xitong Ren, Key Laboratory for Special Functional Materials of Ministry of Education, National & Local Joint Engineering Research Center for High-efficiency Display and Lighting Technology, School of Materials Science and Engineering, and Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng 475004, China
Ronghui Cao, Key Laboratory for Special Functional Materials of Ministry of Education, National & Local Joint Engineering Research Center for High-efficiency Display and Lighting Technology, School of Materials Science and Engineering, and Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng 475004, China
Haiyan Hu, Key Laboratory for Special Functional Materials of Ministry of Education, National & Local Joint Engineering Research Center for High-efficiency Display and Lighting Technology, School of Materials Science and Engineering, and Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng 475004, China
Feng Bai, Key Laboratory for Special Functional Materials of Ministry of Education, National & Local Joint Engineering Research Center for High-efficiency Display and Lighting Technology, School of Materials Science and Engineering, and Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng 475004, China

Keywords

carbon nitride nanosheet, porphyrin, photocatalytic hydrogen evolution, covalent bonding

Abstract

In order to broaden the absorption range of graphitic carbon nitride, one of the common methods is to couple the well-known photosensitizer porphyrin with graphitic carbon nitride through van der Waals weak interactions. To date, to combine porphyrin with graphitic carbon nitride through covalent interactions has not been settled. In this work, through rational molecular design, we successfully incorporated porphyrin into the matrixes of graphitic carbon nitride by covalent bonding via one-pot thermal copolymerization. The resultant material not only can widen the absorption range but also possess the enlarged specific surface area and construction intramolecular heterojunctions which can contribute to improve electron-holes separation efficiency. The resultant photocatalyst exhibited enhanced H2 production rate (7.6 mmol·g−1·h−1) and with the apparent quantum efficiency (AQE) of 13.3% at 450 nm. At the same time, this method opens a way to fabricate graphitic carbon nitride nanosheets via bottom-up strategy.

Graphical Abstract

Publisher

Tsinghua University Press

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