Green synthesis of well dispersed TiO2/Pt nanoparticles photocatalysts and enhanced photocatalytic activity towards hydrogen production |
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| Affiliation: | 1. State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China;2. University of Chinese Academy of Sciences, Beijing 100049, China;3. College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China;1. Nano Catalysis and Solar Fuels Research Laboratory, Department of Materials Science and Nanotechnology, Yogi Vemana University, Vemanapuram, Kadapa 516003, Andhra Pradesh, India;2. CIC Energigune, Energy Cooperative Research Centre, Parque Tecnológico, C/Albert Einstein, 48, 01510 Miñano, Álava, Spain;3. SRM Research Institute, SRM University, Kattankulathur 603203, Tamil Nadu, India;4. Solar Energy Lab, Department of Chemistry, Thiruvalluvar University, Vellore 632115, Tamil Nadu, India;1. Department of Industrial Engineering, University of Salerno, via Giovanni Paolo II, 132, 84084 Fisciano, SA, Italy;2. Department of Civil Engineering, University of Salerno, via Giovanni Paolo II, 132, 84084 Fisciano, SA, Italy;1. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, 430070 Wuhan, Hubei, China;2. Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW, Calgary, Alberta T2N 1N4, Canada;3. Department of Wood Science, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada;4. Nanostructure Research Centre (NRC), Wuhan University of Technology, 122 Luoshi Road, 430070 Wuhan, Hubei, China;5. Laboratory of Inorganic Materials Chemistry (CMI), University of Namur, 61 rue de Bruxelles, B-5000 Namur, Belgium |
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| Abstract: | Deposition of Pt NPs with preferred dispersion and morphologies on TiO2 have been the focus of studies in photocatalytic and photoelectrochemical hydrogen production. Green synthesis of TiO2/Pt NPs nanocomposites with narrow size distribution of Pt NPs still remain a challenge. Herein, we report that sucrose is highly efficient for the preparation of well-dispersed TiO2/Pt NPs photocatalysts. Moreover, the sucrose could act as an electron donor, showing higher hydrogen production activity under simulated sunlight than pure water. The as-synthesized photocatalysts have been characterized by techniques of transmission electron microscopy (TEM), energy dispersive X-ray spectrometer (EDX), and diffuse reflectance spectroscopy (DRS). Compared with TiO2/Pt NPs photocatalysts prepared through conventional photodeposition, the photocatalysts as prepared showed higher photocatalytic efficiency. Moreover, the catalyst could be reused easily without apparent degradation of their original photocatalytic activities. This approach presents a promising and low-cost strategy to improve the photocatalytic performance of TiO2 from biomass. |
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| Keywords: | Sucrose Pt nanoparticles Synthesis Hydrogen production |
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