Effect of Si doping on the photocatalytic activity and photoelectrochemical property of TiO2 nanoparticles |
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| Affiliation: | 1. School of Chemistry and Molecular Engineering, Key Laboratory for Ultrafine Materials of the Ministry of Education, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China;2. School of Chemical and Environmental Engineering, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai 201418, China;1. School of Chemistry & Chemical Engineering, School of Material Science and Engineering, Jiangsu University, Zhenjiang 212013, PR China;2. School of Environmental & Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, PR China;3. School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225000, PR China;1. Thin Film Laboratory, Department of Physics, Indian Institute of Technology, Hauz Khas, New Delhi 110016, India;2. Materials Engineering, The Open University, Milton Keynes, MK7 6AA, United Kingdom;1. College of Metallurgy and Materials Engineering, Chongqing University of Science and Technology, Chongqing 401331, PR China;2. The Center of Material Analysis and Testing, Chongqing University of Science and Technology, Chongqing 401331, PR China;3. College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, PR China;1. Department of Physics, Ibb University, Ibb, Yemen;2. Electronic Materials & Nanomagnetism Lab, Department of Applied Physics, Amity School of Applied Sciences, Amity University Haryana, Gurgaon 122413, India;3. Advanced Analysis Center, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea;4. Department of Pure & Applied Physics, University of Kota, Kota, Rajasthan, India;5. Department of Physics, Banasthali Vidyapith, Banasthali 304022, Rajasthan, India;6. Department of General Studies, Yanbu Institute College, Royal Commission for Jubail and Yanbu, Saudi Arabia |
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| Abstract: | Si-doped TiO2 nanoparticles with anatase crystalline phase were prepared by a hydrothermal method using acetic acid as the solvent. Photoelectrochemical studies showed that the photocurrent value for the 15% Si-doped TiO2 electrode (54.4 μA) was much higher than that of the pure TiO2 electrode (16.7 μA). In addition, the 15% Si-doped TiO2 nanoparticles displayed the highest photocatalytic activity under ultraviolet light irradiation. So doping suitable amount of Si in TiO2 nanoparticles was profitable for transferring photogenerated electrons and inhibiting the recombination of photogenerated electrons and holes. As a result, the photocatalytic activity of TiO2 nanoparticles was improved. |
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