Visible-light inactivation of escherichla coll on n-doped titanium oxide thin films

Pinggui Wu, Jian Ku Shang

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Antimicrobial behavior of nitrogen-doped titanium dioxide (TiO 2-xNx) thin films was examined by cell viability assays under visible light illumination, using Escherichia coli as the indicator. The nitrogen doping was found to enable visible-light inactivation of Escherichia coli on titanium oxide films. At a light intensity of 1.6 mW/cm2, TiO2-xNx films reached a bacterial killing rate of about 50% in half an hour, comparable to those reported for ultraviolet light irradiated TiO2. In the range of nitrogen concentrations from 0.2 to 0.9, the bacterial killing rates showed no clear correlation with the nitrogen concentration for the TiO2-xNx films.

Original languageEnglish (US)
Title of host publicationMaterials Science of Water Purification
Number of pages15
StatePublished - 2006
Event2006 MRS Spring Meeting - San Francisco, CA, United States
Duration: Apr 17 2006Apr 21 2006


Other2006 MRS Spring Meeting
Country/TerritoryUnited States
CitySan Francisco, CA

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials


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