. 2023 Oct 12;9(10):e20948. doi: 10.1016/j.heliyon.2023.e20948

Table 2.

Comparison of photocatalytic activities of N doped ZnO NPs.

Photocatalyst	Pollutant	Preparation method	Irradiation	Degradation efficiency (%)	Ref.
N doped ZnO NPs	RhB	Citrate precursor method	UV for 120 min	60	[95]
	Thymol blue (TB)	Solid state reaction	UV for 180 min	59.5	[96]
	RhB	Mechanochemical method	UV for 180 min	86 %	[97]
	K₂Cr₂O₇	Heat treatment method	UV for 180 min	39 %	[98]
	RhB	Co-precipitation method	UV for 180 min (360 min)	64 % (88 %)	This work