Titanium dioxide and cadmium sulfide co-sensitized graphitic carbon nitride nanosheets composite photocatalysts with superior performance in phenol degradation under visible-light irradiation
| Autor: | Fang Jiang, Huan Chen, Mingchang Jin, Jinhua Yao, Zhongyi Jiao |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Composite number Graphitic carbon nitride Heterojunction 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences Cadmium sulfide 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Biomaterials chemistry.chemical_compound Colloid and Surface Chemistry Adsorption chemistry Titanium dioxide Photocatalysis Irradiation 0210 nano-technology |
| Zdroj: | Journal of Colloid and Interface Science. 490:154-162 |
| ISSN: | 0021-9797 |
| DOI: | 10.1016/j.jcis.2016.11.051 |
| Popis: | In this work, TiO2-CdS-gCNNSs heterojunction photocatalysts were successfully synthesized. CdS was deposited on the surface of gCNNSs via electrostatic attraction; TiOC, TiOCO and TiON bonds were produced in TiO2-CdS-gCNNSs, strengthening the interaction between TiO2 and gCNNSs. The TiO2-CdS-gCNNSs photocatalyst showed excellent photocatalytic activity for phenol degradation under visible-light irradiation, which was higher than that of CdS-gCNNSs, CdS-TiO2 and TiO2-gCNNSs. The improved photocatalytic performance of TiO2-CdS-gCNNSs was ascribed to more adsorption sites, enhanced light harvesting ability and effective separation rate of electron-hole pairs. Furthermore, the results of photocatalytic mechanism indicated that h+ and O2- played a more significant role on the phenol degradation. |
| Databáze: | OpenAIRE |
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