Porous g-C3N4/TiO2 S-scheme heterojunction photocatalyst for visible-light driven H2-production and simultaneous wastewater purification |
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| Affiliation: | 1. School of Environment, Henan Normal University, Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Xinxiang, Henan, 453007, PR China;2. College of Energy, Soochow Institute for Energy and Materials Innovations, Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies Soochow University, Suzhou, 215006, PR China |
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| Abstract: | In this work, photocatalysts with a novel S-scheme heterojunction were fabricated by coupling MOF-derived TiO2 with porous g-C3N4 (MTO/PCN). The S-scheme heterojunction with matching band gap possesses different advantageous properties, which can not only inhibit photo-generated charge recombination, but also reserve outstanding redox ability. As expected, superior hydrogen evolution efficiency of 40-MTO/PCN was obtained in a TEOA-containing aqueous solution and pure water, which were 5252.9 and 974.6 μmol h−1 g−1, respectively. Meanwhile, the hybrid can also serve as a bifunctional catalyst for H2 generation (2137.3 μmol h−1 g−1) and organic contaminant removal (the RhB purification efficiency: 35.24%). This work furnishes a feasible method for devising bifunctional photocatalysts that can simultaneously produce hydrogen and purify wastewater to provide both energy-saving and environmental restoration functions. |
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| Keywords: | S-scheme heterojunction Photocatalytic water splitting Wastewater purification |
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