کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
27570 44030 2011 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhanced inactivation of Escherichia coli with Ag-coated TiO2 thin film under UV-C irradiation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
Enhanced inactivation of Escherichia coli with Ag-coated TiO2 thin film under UV-C irradiation
چکیده انگلیسی

The inactivation of Escherichia coli (E. coli) in water was investigated systematically with Ag-coated TiO2 thin film under UV-C irradiation. Compared with UV-C irradiation alone, the inactivation of E. coli by the UV/Ag-TiO2 process was enhanced and the photoreactivation of the bacteria was much repressed. Moreover, atomic force microscopy (AFM) measurements of E. coli showed that the presence of Ag-TiO2 thin film during UV exposure could expedite the destruction of cell wall and cell membrane, which was further confirmed by the formation of malondialdehyde (MDA) and leakage of intracellular potassium ion (K+) and protein. The results suggest that the cell structure destruction might be the major reason for the enhancement of inactivation efficiency, and the prepared Ag-TiO2 thin films show potential as a new improvement tool for UV-C disinfection.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 217, Issue 1, 1 January 2011, Pages 177–183
نویسندگان
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