Inactivation of Escherichia coli on Immobilized CuO/CoFe2O4‐TiO2 Thin‐Film under Simulated Sunlight Irradiation |
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| Authors: | Jianhui Yan Hao Chen Li Zhang Jinzhi Jiang |
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| Institution: | 1. Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang, Hunan 414000, China;2. School of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China |
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| Abstract: | Composite photocatalysts of CuO/CoFe2O4‐TiO2 were successfully synthesized by a sol‐gel method and fixed on ordinary tiles. The photosterilization of Escherichia coli was examined on CuO/CoFe2O4‐TiO2 thin films under a xenon lamp irradiation. The film was characterized by XRD, and the morphology was observed by SEM. Disinfection data indicated that CuO/CoFe2O4‐TiO2 composite photocatalysts have the much better photocatalytic activity than CuO/CoFe2O4 and TiO2. The optimized composition of the nanocomposites has been found to be mCuO/CoFe2O4:mTiO2=3:7, with loadings ranging from 790 to 1400 mg/m2. The photocatalytic inactivated rate of E. coli (105 CFU/mL) reached 98.4% under the xenon lamp of 150 W within 30 min. |
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| Keywords: | CuO/CoFe2O4‐TiO2 Escherichia coli photooxidation thin films |
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