Synthesis, Characterization, and Photocatalytic Activity of ZnO Nanomaterials Prepared by a Green, Nonchemical Route

Table 5

Photocatalytic degradation of methylene blue with different ZnO nanomaterials under UV light catalyst methods.

Catalyst	Methods	%removal	Degradation rate (min^-1)	Ref
Nanosized ZnO	Sol-gel	99	—	[23]
	Precipitation	98	—	[23]
	Thermal decomposition	85	—	[23]
ZnO nanoparticles	Precipitation	92.5	0.0124	[26]
ZnO nanospheres	Polyol-method	99.1	0.07432	[27]
Nitrogen doped ZnO nanoparticles	Hydrothermal method	99.6	-0.0579	[28]
ZnO nanoparticles	Thermal decomposition	99.4	0.1286	This study