Synthesis and Photocatalytic Activity of One-Dimensional CdS@TiO2 Core-Shell Heterostructures

One-dimensional CdS@TiO 2 core-shell heterostructures were fabricated via the hydrolysis of tetrabutyl titanate (TBT) on preformed CdS nanowires. The as-prepared products were characterized by X-ray diffraction, transmission electron microscopy, selected area electron diffraction and diffuse reflect...

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Bibliographic Details
Published inNano-micro letters Vol. 3; no. 1; pp. 6 - 11
Main Authors Wei, Hongwei, Wang, Le, Li, Zhipeng, Ni, Shouqing, Zhao, Quanqin
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 01.01.2011
Subjects
Engineering
Nanoscale Science and Technology
Nanotechnology
Nanotechnology and Microengineering
One-dimensional CdS@TiO
heterostructures
Photocatalysis
Morphology
Mechanism
Methylene blue
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Summary:One-dimensional CdS@TiO 2 core-shell heterostructures were fabricated via the hydrolysis of tetrabutyl titanate (TBT) on preformed CdS nanowires. The as-prepared products were characterized by X-ray diffraction, transmission electron microscopy, selected area electron diffraction and diffuse reflectance spectroscopy techniques. Results demonstrated that the hydrolysis of TBT had a great influence on the morphology of the coated TiO 2 shell, resulting in the formation of TiO 2 nanoparticles and nanolayer-modified CdS@TiO 2 heterostructures. Degradation of methylene blue using CdS@TiO 2 core-shell heterostructures as photocatalysts under visible light irradiation was investigated. Comparative photocatalytic tests showed that the TiO 2 nanoparticles-modified heterostructure exhibited a superior activity due to the passivity of photogenerated charge carriers.
ISSN:2311-6706
2150-5551
DOI:10.1007/BF03353645