g-C3N4/B doped g-C3N4 quantum dots heterojunction photocatalysts for hydrogen evolution under visible light |
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| Affiliation: | 1. College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, PR China;2. College of Chemistry and Chemical Engineering, Zhengzhou Normal University, Zhengzhou 450044, PR China;3. Analytical and Testing Center of Beijing Normal University, Beijing 100875, PR China;1. School of Material Science and Engineering, University of Jinan, Jinan, 250022, PR China;2. Fuels and Energy Technology Institute and Western Australia School of Mines, Minerals, Energy and Chemical Engineering, Curtin University, Perth, WA6845, Australia;3. Department of Materials Science & Engineering, National Tsing Hua University, Hsinchu City, Taiwan;1. School of Materials Science and Engineering, Beihua University, Jilin, 132013, PR China;2. Key Laboratory of Preparation and Application of Environmental Friendly Materials (Jilin Normal University), Ministry of Education, Changchun, 130103, PR China;3. School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, 212003, PR China;1. Department of Environmental Science & Engineering, State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China;2. Department of Applied Chemistry, School of Science, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, State Key Laboratory for Electrical Insulation and Power Equipment, Xi''an Jiaotong University, Xi''an 710049, China;3. Xi’an Jiaotong University Suzhou Institute, Suzhou 215123, China;4. School of Chemical Engineering and Technology, State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong Universit, Xi’an 710049, China;5. Department of Structures and Environmental Engineering, University of Agriculture, Faisalabad 38040, Pakistan;6. Department of Energy Systems Engineering, University of Agriculture, Faisalabad 38040, Pakistan;1. Key Laboratory for Radioactive Geology and Exploration Technology, Fundamental Science for National Defense, East China University of Technology, Nanchang 330013, PR China;2. State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, PR China |
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| Abstract: | Developing high activity and eco-friendly photocatalysts for water splitting is still a challenge in solar energy conversion. In this paper, B doped g-C3N4 quantum dots (BCNQDs) were prepared via a facile molten salt method using melamine and boron oxide as precursors. By introducing BCNQDs onto the surface of g-C3N4, g-C3N4/BCNQDs heterojunction was constructed via hydrothermal treatment. The resulting g-C3N4/BCNQDs heterojunction exhibits enhanced hydrogen evolution performance for water splitting under visible light irradiation. The mechanism underlying the improved photocatalytic activity was explored and discussed based on the formation of heterojunction between g-C3N4 and BCNQDs with well-matched band structure. |
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| Keywords: | Photocatalysis Water splitting Hydrogen evolution |
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