TiO₂ and ZnO Nanoparticles in Photocatalytic and Hygienic Coatings

Table 3

Amount of bacteria/mold growth (%) on the coatings containing nano ZnO in various concentrations.

	Escherichia coli	Staphylococcus aureus	Pseudomonas aeruginosa	Penicillium chrysogenum	Aspergillus niger
Control	80	90	95	100	100
1% ZnO	0	0	80	100	90
2% ZnO	0	0	80	100	80
3% ZnO	0	0	40	95	15
4% ZnO	0	0	25	95	5