Preparation of Hierarchical Structure Au/ZnO Composite for Enhanced Photocatalytic Performance: Characterization, Effects of Reaction Parameters, and Oxidizing Agent Investigations

Table 1

Comparison of photocatalytic degradation of different organic dyes using precious metal-doped ZnO nanocomposites.

Catalyst, dosage (g/L)	Target pollutant (concentration, mg/L)	Light source	Degradation time/efficiency	Reaction rate, (min^-1)	Reference
Au (5 wt%)/ZnO, 0.5 g/L	CR (16 mg/L)	UV lamp 100 W	60 min/77.2%	0.0196 min^-1	[30]
Ag (5 wt%)/ZnO, 0.5 g/L	CR (16 mg/L)	UV lamp 100 W	60 min/81.2%	0.0226 min^-1
Pd (5 wt%)/ZnO, 0.5 g/L	CR (16 mg/L)	UV lamp 100 W	60 min/98.2%	0.0576 min^-1
Au/ZnO-5, 0.5 g/L	CR (10 mg/L)	Hg lamp 250 W	5 min/100%	0.855 min^-1	This work
ZnO/Au15 (15 wt%), 0.5 g/L	MB (10 mg/L)	Xenon lamp 100 W	120 min/90%	0.0182 min^-1	[54]
Ag-Cu-ZnO (2 : 2 : 96 wt%), 1 g/L	MB (10 mg/L)	Tungsten lamp 400 W	180 min/95%	0.0111 min^-1	[55]
Au/ZnO-5, 0.5 g/L	MB (10 mg/L)	Hg lamp 250 W	40 min/98,7%	0.062 min^-1	This work
Ag (10%wt)/ZnO, 0.5 g/L	JGB (10 mg/L)	Solar light	60 min/83%	0.028 min^-1	[23]
Au/ZnO-5, 0.5 g/L	JGB (10 mg/L)	Hg lamp 250 W	100 min/99.5%	0.021 min^-1	This work
Ag (3 wt%)/ZnO, 0.2 g/L	TA (25 mg/L)	Hg lamp 8 W	60 min/95.2%	0.0497 min^-1	[33]
Au/ZnO-5, 0.5 g/L	TA (10 mg/L)	Hg lamp 250 W	30 min/99.2%	0.109 min^-1	This work