Photocatalytic degradation of organochlorine compounds using TiO2 supported on fiberglass cloth |
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作者姓名: | Chen Shi fu Cheng Xue li |
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作者单位: | Department of Chemistry;Huaibei Coal Normal College;Huaibei 235000;China,Department of Chemistry;Huaibei Coal Normal College;Huaibei 235000;China |
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摘 要: | The feasibility of photocatalytic degradation of organochlorine compounds using TiO2 supported on fiberglass cloth as a photocatalyst was studied. The results showed that 2.0×10-4 mol/dm3 of dichloroethylene, trichloroethylene and tetrachloroethylene can be completely photocatalytically degraded within a short time under illumination with a 375W medium pressure mercury lamp. The effects of parameters such as illumination time, initial concentration of organochlorine compounds, amount of air flow and concentration of H2O2 on the photocatalytic degradation were investigated. The TiO2 supported on the fiberglass was not easily detached and after 500h illumination there was no significant loss of photocatalytic activity of TiO2. The passible mechanisms of photocatalytic degradation were discussed.
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关 键 词: | photocatalytic degradation organochlorine compounds TiO2 thin films fiberglass. |
收稿时间: | 1997-10-21 |
修稿时间: | 1997-12-15 |
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