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- Title
Hydrothermal growth of TiO nanowire membranes sensitized with CdS quantum dots for the enhancement of photocatalytic performance.
- Authors
Li, Yang; Zhang, Lili; Wu, Wenjian; Dai, Peng; Yu, Xinxin; Wu, Mingzai; Li, Guang
- Abstract
In this paper, TiO nanowires (NWs) on Ti foils were prepared using a simple hydrothermal approach and annealing treatment. CdS quantum dots (QDs) were assembled onto the crystallized TiO NWs by sequential chemical bath deposition. Ultraviolet-visible absorption spectra showed that CdS adds bands in the visible to the TiO absorption and exhibited a broad absorption band in the visible region, which extended the scope of absorption spectrum and helped improve the photocatalytic degradation efficiency. The results of photocatalytic experiment revealed that CdS-TiO NWs possessed higher photocatalytic activities toward methyl orange than pure TiO nanowires. The degradation efficiency of 96.32% after ten cycles indicated that the as-prepared CdS-TiO composite exhibited excellent long-time recyclable ability and can be reused for the degradation of contaminants.
- Subjects
CRYSTAL growth; TITANIUM oxides; ANNEALING of metals; NANOWIRES; ARTIFICIAL membranes; CADMIUM sulfide
- Publication
Nanoscale Research Letters, 2014, Vol 9, Issue 1, p1
- ISSN
1931-7573
- Publication type
Article
- DOI
10.1186/1556-276X-9-270