Research Article
The High Photocatalytic Activity of SnO2 Nanoparticles Synthesized by Hydrothermal Method
Table 1
The comparison of the photocatalytic degradation of dyes using SnO2 NPs.
| Catalysts (shape and particles size) | Light source | Dye (initial concn) | Volume (mL) | % degradation | Irradiation time (mins) | Catalyst concn (g) | Ref |
| SnO2 NPs (~3 nm) | 7 W UV lamp, visible light λ = 350 nm | MB, 10 mg/L | 60 | 90.0 | 120 | 0.03 | This work | Direct sunlight |
| SnO2 NPs (15–40 nm) | Low pressure 125 W UV lamp, visible light λ = 254 nm | MB, 20 mg/L | 100 | 93.3 | 120 | 0.2 | [3] |
| SnO2 NPs (~4 nm) | UV lamp, λ = 365 nm (power of lamp: nondetermined) | Phenol red, 1 mL, 10−4 M | 1.0 | 100 | 120 | 0.25 | [27] |
| Microspherical (0.4–1.8 μm diameter) | Four 8 W UV lamps (Philips UV-A, λ = 350 nm) | Aniline, 20 mg/L | 10 | 80 | 120 | 0.1 | [28] | 4-Nitroaniline (20 mg/L) | 70 | 2,4-Dinitroaniline (20 mg/L) | 50 |
| Spherical SnO2 quantum dots (~2.5–4.5 nm) | Direct sunlight | Rhodamine B (10−4 M) | 200 | 83.9 | 420 | 0.01 | [26, 29] | MB (10−4 M) | 56.8 | 360 |
|
|