| One-step growth method |
Pure ZnO, 400 mg L−1
|
MO (20 ppm) |
High-pressure mercury lamp (360 W) |
98.3% in 100 min |
4
|
| Chemical precipitation method |
Ce–ZnO, 500 mg L−1
|
MO (5 mg L−1) |
High-pressure mercury lamp (250 W) |
89.5% in 240 min |
7
|
| Precipitation method |
Pt–ZnO, 1000 mg L−1
|
RhB (20 mg L−1) |
Ultra-Vitalux lamp (300 W) |
96.9% in 60 min |
13
|
| Electrospinning method |
Fe–ZnO, 400 mg L−1
|
MB (10 mg L−1) |
Mercury lamp |
88% in 360 min |
15
|
| Microwave assisted ultrasonicated precipitation method |
Sn–Cu–ZnO, 1000 mg L−1
|
MB (20 ppm) |
High-pressure halogen lamp (500 W) |
98.5% in 180 min |
16
|
| Three-step hydrothermal and pulsed laser ablation method |
Au–ZnO, 500 mg L−1
|
MB (5 × 10−5 M) |
Xenon lamp (300 W) |
98% in 20 min |
19
|
| Solvothermal method |
Ag–ZnO, 8.3 mg L−1
|
MB (2.5 ppm) |
High-pressure mercury vapor lamp (125 W) |
99% in 120 min |
20
|
| One-pot hydrothermal method |
Ag–ZnO, 200 mg L−1
|
RhB (1 × 10−5 M) |
UV lamp (125 W) |
92% in 80 min |
24
|
| Electrospinning and hydrothermal method |
C–ZnO |
RhB (10 mg L−1) |
High-pressure mercury lamp (50 W) |
96% in 50 min |
33
|
| Borohydride reduction method |
Pd–ZnO, 500 mg L−1
|
Congo red (16 mg L−1) |
UV light (100 W) |
98.2% in 60 min |
54
|
| Sol–gel method |
Ag–ZnO, 1000 mg L−1
|
MB (10 mg L−1) |
Xenon lamp (250 W) |
97.1% in 15 min |
Present study |
