Back to Search
Start Over
Photocatalytic degradation of gaseous benzene with CdS-sensitized TiO2 film coated on fiberglass cloth
- Source :
-
Journal of Molecular Catalysis A: Chemistry . Nov2012, Vol. 363-364, p159-165. 7p. - Publication Year :
- 2012
-
Abstract
- Abstract: In this paper, TiO2 film coated on fiberglass cloth was synthesized by sol–gel method and further sensitized by CdS nanoparticles using a sequential chemical bath deposition technique. Gaseous benzene was adopted as a model pollutant to evaluate the photocatalytic performances of the supported TiO2 films sensitized with variable content of CdS nanoparticles, which obtained by adjusting the concentration of Cd2+ or S2− precursor solution. Along with the increase of the CdS amount, the photocatalytic activity of these samples initially increases and then shows a downward trend. When the concentration of Cd2+ or S2− precursor solution achieved 0.005M, the sample performs the best photocatalytic property and the degradation efficiency reaches 92.8% and 32.7% under UV–vis and visible light irradiation, respectively. The enhancement of the photocatalytic activity could be attributed to the formation of micro-heterojunction. However, a thick CdS sheath covered catalyst surface will form when high concentration of Cd2+ or S2− solution is used. The low photogenerated electron–hole pairs separation efficiency and the photocorrosion process of CdS decrease the photocatalytic activity gradually. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 13811169
- Volume :
- 363-364
- Database :
- Academic Search Index
- Journal :
- Journal of Molecular Catalysis A: Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 79874195
- Full Text :
- https://doi.org/10.1016/j.molcata.2012.06.004