Combustion synthesized TiO2 for enhanced photocatalytic activity under the direct sunlight-optimization of titanylnitrate synthesis |
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| Authors: | A Daya Mani V Laporte P Ghosal Ch Subrahmanyam |
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| Affiliation: | 1. Department of Chemistry, IIT Hyderabad, Yeddumailaram 502 205, India;2. Ecole Polytechnique Federale de Lausanne (EPFL), Interdisciplinary Centre for Electron Microscopy – Surface Analysis Facility, CH-Lausanne, Switzerland;3. Defence Metallurgical Research Laboratory (DMRL), Kanchanbagh, Hyderabad 500 058, India;1. Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502285 Telangana, India;2. Department of Chemistry, Faculty of Science, King Khalid University, Abha, 61413, Saudi Arabia;1. Govt. Institute of Science, R.T. Road, Civil Lines, Nagpur, India;2. R.T.M Nagpur University, Amravati Road, Nagpur, India;3. RP&AD, BARC, Mumbai, India;1. Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China;2. The Key Laboratory of Water and Sediment Sciences, Ministry of Education, Department of Environmental Engineering, Peking University, Beijing 100871, China;3. Environmental Engineering Program, Department of Civil Engineering, Auburn University, Auburn, AL 36849, USA;4. School of Engineering, The University of Edinburgh, The King’s Buildings, Edinburgh EH9 3JL, UK;1. Advanced Materials Technology Department, Central Metallurgical Research and Development Institute, P.O. Box: 87, Helwan, Cairo 11421, Egypt;2. Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia;3. Promising Centre for Sensors and Electronic Devices (PCSED), Advanced Materials and Nano-Research Centre, Najran University, P.O. Box 1988, Najran 11001, Saudi Arabia;4. Materials Science and Engineering Department, University of Florida, UF, Gainesville 32611, Fl, USA |
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| Abstract: | Optimized synthesis of Ti-precursor ‘titanylnitrate’ for one step combustion synthesis of N- and C-doped TiO2 catalysts were reported and characterized by using powder X-ray diffraction (XRD), transmission electron microscopy (TEM), diffused reflectance UV–vis spectroscopy, N2 adsorption and X-ray photoelectron spectroscopy (XPS). XRD confirmed the formation of TiO2 anatase and nano-crystallite size which was further confirmed by TEM. UV-DRS confirmed the decrease in the band gap to less than 3.0 eV, which was assigned due to the presence of C and N in the framework of TiO2 as confirmed by X-ray photoelectron spectroscopy. Degradation of methylene blue in aqueous solution under the direct sunlight was carried out and typical results indicated the better performance of the synthesized catalysts than Degussa P-25. |
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