TiO₂ and ZnO Nanoparticles in Photocatalytic and Hygienic Coatings

Table 2

Amount of bacteria/mold growth (%) on the coatings with various types of TiO₂ or mixture of nano TiO₂ I and nano ZnO.

	Escherichia coli	Staphylococcus aureus	Pseudomonas aeruginosa	Penicillium chrysogenum	Aspergillus niger
Control	80	90	95	100	100
TiO2 I	0	0	80	80	80
TiO2 II	70	80	100	100	90
TiO2 I + ZnO	0	0	80	30	0
TiO2 III	100	100	80	100	100