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Preparation and enhanced photocatalytic performance of Sn ion modified titania hollow spheres |
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| Authors: | Peifang Wang Jiancheng Wu Yanhui Ao Chao Wang Jun Hou Jin Qian |
| Affiliation: | 1. Department of Physics, Faculty of Science, Mahidol University, Bangkok 10400, Thailand;2. Department of Materials Science and Nano Engineering, Rice University, Houston, TX 7005, United States;3. NECTEC, National Science and Technology Development Agency (NSTDA), Thailand Science Park, Pathumthani 12120, Thailand;4. Department of Material Science, Faculty of Science, Kasetsart University, Bangkok 10400, Thailand;5. Department of Physics, Faculty of Science, King Mongkut''s University of Technology Thonburi, Bangkok 10140, Thailand;6. ThEP Center, Commission of Higher Education, 328 Si Ayuthaya Rd, Thailand;1. Department of Chemical Engineering, Nanoscience Institute of Aragon (INA), University of Zaragoza, 50018 Zaragoza, Spain;2. Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, 28029 Madrid, Spain;3. Department of Chemical and Biomolecular Engineering, The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, China |
| Abstract: | Sn-doped hollow titania spheres were prepared using carbon spheres as template and Sn-doped titania nanoparticles as building blocks. The Sn-doped titania nanoparticles were synthesized under mild condition (low temperature and atmospheric pressure). The prepared hollow spheres were characterized by X-ray diffraction (XRD), transmission electron microscope (TEM) and X-ray photoelectron spectroscopy (XPS). The effects of Sn content on the physical structure and photocatalytic activity of doped hollow titania sphere samples were investigated. It shows that the increasing of Sn content induces the transformation of titania from anatase to rutile phase. Results also showed that there was an optimal Sn-doped content (5%) in our samples for the photocatalytic degradation of Reactive Brilliant Red X-3B (C.I. reactive red 2). |
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