Photocatalytic Oxidation of Bacteria, Bacterial and Fungal Spores, and Model Biofilm Components to Carbon Dioxide on Titanium Dioxide-Coated Surfaces

Edward J. Wolfrum, Jie Huang, Daniel M. Blake, Pin Ching Maness, Zheng Huang, Janene Fiest, William A. Jacoby

Research output: Contribution to journalArticlepeer-review

234 Scopus Citations

Abstract

We report carbon mass balance and kinetic data for the total oxidation of cells, spores, and biomolecules deposited on illuminated titanium dioxide surfaces in contact with air. Carbon dioxide formation by photocatalytic oxidation of methanol, glucose, Escherichia coli, Micrococcus luteus, Bacillus subtilis (cells and spores), Aspergillus niger spores, phosphatidylethanolamine, bovine serum albumin, and gum xanthan was determined as a function of time. The quantitative data provide mass balance and rate information for removal of these materials from a photocatalytic surface. This kind of information is important for applications of photocatalytic chemistry in air and water purification and disinfection, self-cleaning surfaces, and the development of self-cleaning air filters.

Original languageAmerican English
Pages (from-to)3412-3419
Number of pages8
JournalEnvironmental Science and Technology
Volume36
Issue number15
DOIs
StatePublished - 2002

NREL Publication Number

  • NREL/JA-512-32905

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