| Autor: |
Cheng, Cheng, Zhang, Jinfeng, Jia, Haiping, Ding, Xutao, Dong, Gongyue, Chen, Feng, Hu, Yuchao, Shi, Jinwen |
| Zdroj: |
Journal of Environmental Chemical Engineering; June 2024, Vol. 12 Issue: 3 |
| Abstrakt: |
For the dye-sensitized heterogeneous photocatalytic system, the main challenge is the design of support materials with low cost, good adsorption capacity and facilitated electron transfer ability. Herein, an amorphous/crystalline SnO2/BaSO4composite with unique leaf-like morphology composed of four protruded corners was developed by an one-pot coprecipitation method at room temperature. The low-cost crystalline BaSO4acted as the support material for Eosin Y (EY) sensitization and did not inhibit the light absorption of EY, and the amorphous SnO2uniformly coated on BaSO4provided good conductivity to benefit for the transport of photogenerated carriers. Therefore, under visible-light irradiation (λ≥ 420 nm), the EY-sensitized SnO2/BaSO4showed excellent photocatalytic activity with H2-production rate of 263 μmol h−1, which was 7.5 times that of EY or EY-sensitized bare BaSO4, and the apparent quantum yield achieved to be 11.2 % at 500 nm. |
| Databáze: |
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