Methylene Blue Photodegradation under Visible Irradiation on Ag-Doped ZnO Thin Films

Table 2

Optical and kinetic results for both ZnO:Cu and ZnO:Co thin films.

Thin film	Band gap; (eV)	Degradation; (%)	Ratio	(min^-1)
ZnO	3.22	2.7	1.0	0.2
ZnO:Ag 1%	2.95	30.8	13.5	2.7
ZnO:Ag 3%	3.12	37.5	17	3.4
ZnO:Ag 5%	3.10	44.8	20.5	4.1

Degradation (%)_ZnO:Ag/degradation (%)_ZnO.