Fabrication of hollow g-C3N4@α-Fe2O3/Co-Pi heterojunction spheres with enhanced visible-light photocatalytic water splitting activity |
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| Affiliation: | 1. School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan 250062, Shandong, China;2. Institute of Materia Medica, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250062, Shandong, China;3. Institute of Materia Medica, Shandong Academy of Medical Sciences, Key Laboratory for Biotech-Drugs Ministry of Health, Key Laboratory for Rare＆Uncommon Diseases of Shandong Province, Jinan 250062, Shandong, China;1. Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences (PSAS), Beni-Suef University, 62511 Beni-Suef, Egypt;2. Department of Chemistry, University of Zululand, Private Bag X1001, Kwadlangezwa 3886, South Africa;3. Department of Chemistry, University of KwaZulu-Natal, Private Bag X01, Scottsville, Pietermaritzburg 3209, South Africa;1. School of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310, UTM, Johor Bahru, Johor, Malaysia;2. Chemical and Petroleum Engineering Department, UAE University, P.O. Box 15551, Al Ain, United Arab Emirates;3. Fossil Fuels Laboratory, Department of Thermal Energy Engineering, U.S.-Pakistan Centre for Advanced Studies in Energy (USPCAS-E), National University of Sciences and Technology (NUST), Sector H-12, Islamabad 44000, Pakistan;4. Advanced Functional Materials & Optoelectronics Laboratory (AFMOL), Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha, Saudi Arabia;5. Department of Chemical Engineering, King Fahd University of Petroleum and Minerals (KFUPM), Dhahran, 31261, Saudi Arabia;1. School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, PR China;2. School of Material Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, PR China;3. School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, 212003, PR China;4. College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China;1. School of Chemistry and Chemical Engineering, Southeast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory, Nanjing 211189, PR China;2. College of Physics and Materials Science, Henan Normal University, Xinxiang 453007, PR China;1. Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, 483 Wushan Road, Guangzhou, 510642, China;2. Environmetal Protection Montoring Station, EPA, Shantou, 515041, China;3. Center of Experimental Teaching for Common Basic Courses, South China Agricultural University, 483 Wushan Road, Guangzhou 510642, China |
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| Abstract: | For the first time, g-C3N4@α-Fe2O3/Co-Pi heterojunctional hollow spheres were successfully fabricated via thermal condensation method followed by solvothermal and photo-deposition treatment, which showed excellent photocatalytical property. Except for the Z-scheme charge transfer between α-Fe2O3 and g-C3N4, the Co-Pi could further reduce the combination of photogenerated electrons and holes as a hole storage agent, resulting in remarkably enhanced visible-light photocatalytic water splitting activity with the H2 production rate of 450 μmol h?1g?1, which is 15.7 times higher than that of g-C3N4. Moreover, the photocatalytic activity of the prepared ternary hollow photocatalysts showed almost no significant weakness after five cycles, which indicated their good performance stability. The as-prepared g-C3N4@α-Fe2O3/Co-Pi also possessed good activity for overall water splitting with the hydrogen production rate reaching 9.8 μmol h?1g?1. This synthesized g-C3N4@α-Fe2O3/Co-Pi composite is expected to be a promising candidate for water splitting. |
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| Keywords: | Photocatalysts Visible light Hydrogen evolution Stability |
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