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Hydrothermal growth of TiO(2) nanowire membranes sensitized with CdS quantum dots for the enhancement of photocatalytic performance

In this paper, TiO(2) 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(2) NWs by sequential chemical bath deposition. Ultraviolet-visible absorption spectra showed that CdS adds ban...

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Detalles Bibliográficos
Autores principales: Li, Yang, Zhang, Lili, Wu, Wenjian, Dai, Peng, Yu, Xinxin, Wu, Mingzai, Li, Guang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4046152/
https://www.ncbi.nlm.nih.gov/pubmed/24936164
http://dx.doi.org/10.1186/1556-276X-9-270
Descripción
Sumario:In this paper, TiO(2) 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(2) NWs by sequential chemical bath deposition. Ultraviolet-visible absorption spectra showed that CdS adds bands in the visible to the TiO(2) 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(2) NWs possessed higher photocatalytic activities toward methyl orange than pure TiO(2) nanowires. The degradation efficiency of 96.32% after ten cycles indicated that the as-prepared CdS-TiO(2) composite exhibited excellent long-time recyclable ability and can be reused for the degradation of contaminants.