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- W2390364412 abstract "Ti/Si, Fe/Ti, Fe/Ti/Si complex particles of different Ti and Fe contents were prepared by the sol - gel method and used as photocatalysts. The photocatalytic reactivity of these catalysts were investigated as a function of the Ti and Fe contents during the liquid - phase oxidation of tetracycline, which showed a dramatic enhancement at low Fe content. The UV - vis, FT - IR, XRD, XPS and Raman spectra investigation indicated that the titanium oxide particles anchored onto Si-O-Si tetrahedral network were highly dispersed with the size being about 10nm to 12nm in the Ti/Si, Fe/Ti/Si complex particles. The Fe/Ti/Si complex particles were proved to be the optimum photocatalysts in the present reaction. The promoting effects were attributed to the cooperation function of the multi - components, the generation of active · OH radicals and the intermediate midgap in the titanium oxide semiconductor caused by Fe3+ . The TiO2 particles existed in the low crystalline anatase phase and formed Si-O-Ti, Ti-O-Fe tetrahedral coordination network due to the inclusion of Ti4 + and Fe3+ ions into the SiO2 matrix. These catalysts had significant surface defects, large specific surface area and high photocatalytic reactivity related to fast electron and hole separation. It was found that titanium oxide semiconductor particles of low crystalline anatase - rutile mixed phases of about 16nm in size and existed in the Ti-O-Fe tetrahedral coordination network due to the inclusion of Fe3 + ions into the TiO2 matrix in the Fe/Ti complex particles. The titanium oxide semiconductor doped with Fe3+ enhanced UV light absorption and activity in the degradation of organic pollutants due to the highly surface defects and the formation of intermediate gap state. But, these particle size increased and stabilization was lower as compared to Ti/Si complex particles. The highly dispersed and highly stable Fe/Ti/Si complex particles existed in the Fe2O3, Fe3O4, FeO species and Si-O-Si, Ti-O-Ti, Si-O-Ti, Ti-O-Fe tetrahedral coordination networks due to the inclusion of Ti4 + and Fe3 + ions into the SiO2, TiO2 matrix." @default.
- W2390364412 created "2016-06-24" @default.
- W2390364412 creator A5033518813 @default.
- W2390364412 date "2000-01-01" @default.
- W2390364412 modified "2023-09-28" @default.
- W2390364412 title "Characterization of Fe/Ti/Si Complex Particles Prepared by the Sol - Gel Method and Their Photocatalytic Reactivity for Liquid - Phase Oxidation of Tetracycline" @default.
- W2390364412 hasPublicationYear "2000" @default.
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