Photocatalytic oxidation of bacteria, bacterial and fungal spores, and model biofilm components to carbon dioxide on titanium dioxide-coated surfaces.
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 importantfor applications of photocatalytic chemistry in air and water purification and disinfection, self-cleaning surfaces, and the development of self-cleaning air filters.
National Renewable Energy Laboratory, Golden, Colorado 80401, USA.
Edward J
EJ
Wolfrum
Jie
J
Huang
Daniel M
DM
Blake
Pin-Ching
PC
Maness
Zheng
Z
Huang
Janene
J
Fiest
William A
WA
Jacoby
D001234:Aspergillus niger / Q000737:chemistry*; D001412:Bacillus subtilis / Q000737:chemistry*; D018441:Biofilms; D002245:Carbon Dioxide / Q000737:chemistry*; D002384:Catalysis; D004396:Coloring Agents / Q000737:chemistry*; D004926:Escherichia coli / Q000737:chemistry*; D005374:Filtration; D005947:Glucose / Q000378:metabolism; D000432:Methanol / Q000378:metabolism; D016982:Micrococcus luteus / Q000737:chemistry*; D010084:Oxidation-Reduction; D010777:Photochemistry; D013170:Spores; D014025:Titanium / Q000737:chemistry*
D004396:Coloring Agents; D002245:Carbon Dioxide; C009495:titanium dioxide; D014025:Titanium; D005947:Glucose; D000432:Methanol