Fabrication of anti-poisoning core-shell TiO2 photocatalytic system through a 4-methoxycalix[7]arene film |
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| Authors: | Ruitao Zhou M.P. Srinivasan |
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| Affiliation: | 1. Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore;2. Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong;3. Department of Chemical Engineering, School of Engineering, RMIT University, Australia |
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| Abstract: | TiO2 nanoparticles with unique crystalline-core/disordered-shell structures were synthesized in a one step process by employing 4-methoxycalix[7]arene nanoreactors. The nanoparticles were anchored on the surface of quartz beads as a monolayer and showed high visible-light driven photocatalytic activity, excellent long term durability and anti-poisoning property. Photocatalytic performance of the TiO2 nanoparticles was tested in a packed bed and complete decolorization of methyl orange was achieved under ultraviolet light or visible light. The decolorization process followed first-order kinetics and showed different behaviors for ultraviolet and visible radiation, while the overall rates of degradation were the same. |
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| Keywords: | Photocatalysis 4-methoxycalix[7]arene Anti-poisoning Core-shell |
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