Doped-metal oxide nanoparticles for use as photocatalysts
Nano-sized doped-metal oxides such as Fe-doped TiO 2, WO 3-doped ZnO and Fe-doped CeO 2 were synthesized by the modified sol-gel/impregnation, flame spray pyrolysis and homogeneous precipitation/impregnation methods respectively. The crystalline phase, particles size, and crystallinity of nano-sized...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
2014
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| Online Access: | http://www.scopus.com/inward/record.url?eid=2-s2.0-84861724665&partnerID=40&md5=128f97b4b9733c875e18787dce7a3903 http://cmuir.cmu.ac.th/handle/6653943832/6796 |
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| Institution: | Chiang Mai University |
| Language: | English |
| Summary: | Nano-sized doped-metal oxides such as Fe-doped TiO 2, WO 3-doped ZnO and Fe-doped CeO 2 were synthesized by the modified sol-gel/impregnation, flame spray pyrolysis and homogeneous precipitation/impregnation methods respectively. The crystalline phase, particles size, and crystallinity of nano-sized powder were analyzed by X-ray diffraction (XRD) and transmission electron microscopy (TEM). Specific surface area of the sample was examined by the Brunauer, Emmett and Teller (BET) adsorption-desorption of nitrogen gas. The photocatalytic activity of Fe-doped TiO 2, WO 3/ZnO, Fe-doped CeO 2 nanoparticles was examined by studying the mineralization of methanol, sucrose, glucose, oxalic acid and formic acid under UV and visible light irradiations in a pyrex spiral photoreactor. It was found that doped metal oxides could improve the photocatalytic activity of the pure metal oxides. © 2012 Elsevier Ltd. All rights reserved. |
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