Journal
CHINESE JOURNAL OF CHEMISTRY
Volume 29, Issue 6, Pages 1133-1138Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cjoc.201190212
Keywords
CuO/CoFe2O4-TiO2; Escherichia coli; photooxidation; thin films
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Funding
- Natural Science Foundation of China [20876039]
- Aid Program for Science and Technology Innovative Research Team in Higher Educational Instituions of Hunan Province
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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 m(CuO/CoFe2O4) : m(TiO2) = 3: 7, with loadings ranging from 790 to 1400 mg/m(2). The photocatalytic inactivated rate of E. coli (10(5) CFU/mL) reached 98.4% under the xenon lamp of 150 W within 30 min.
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