Sol-gel synthesis of Fe₂O₃-doped TiO₂ for optimized photocatalytic degradation of 2,4- dichlorophenoxyacetic acid
Fe₂O₃-doped and undoped TiO₂ catalysts were synthesized by sol-gel method and used to optimize the photocatalytic degradation of 2,4-Dichlorophenoxyacetic acid (2,4-D). The catalysts produced were dominated by the tetragonal, crystalline anatase TiO₂ cell structure. The 0.05wt% Fe₂O₃-doped TiO₂ cata...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Oriental Scientific Publishing
2017
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| Online Access: | http://psasir.upm.edu.my/id/eprint/63252/1/Sol-gel%20synthesis%20of%20Fe%E2%82%82O%E2%82%83-doped%20TiO%E2%82%82%20for%20optimized%20photocatalytic%20degradation%20of%202%2C%204-%20dichlorophenoxyacetic%20acid.pdf http://psasir.upm.edu.my/id/eprint/63252/ http://www.orientjchem.org/vol33no4/sol-gel-synthesis-of-fe2o3-doped-tio2-photocatalyst-for-optimized-photocatalytic-degradation-of-24-dichlorophenoxyacetic-acid/ |
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| Summary: | Fe₂O₃-doped and undoped TiO₂ catalysts were synthesized by sol-gel method and used to optimize the photocatalytic degradation of 2,4-Dichlorophenoxyacetic acid (2,4-D). The catalysts produced were dominated by the tetragonal, crystalline anatase TiO₂ cell structure. The 0.05wt% Fe₂O₃-doped TiO₂ catalyst exhibited higher photocatalytic activity than that of undoped TiO₂ but its performance decline with increase Fe₂O₃ content due to possible increase of recombination centers. Photocatalytic degradation of 2,4-DA was optimized by response surface methodology. The highest 2,4-DA degradation (48%) was obtained when 1.0 g of 0.05wt% Fe₂O₃-doped TiO₂ is used to degrade 10 ppm of 2,4-DA at pH 4. |
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