Journal
NANO-MICRO LETTERS
Volume 3, Issue 1, Pages 6-11Publisher
SHANGHAI JIAO TONG UNIV PRESS
DOI: 10.1007/BF03353645
Keywords
One-dimensional CdS@TiO2; heterostructures; Photocatalysis; Methylene blue; Morphology; Mechanism
Funding
- Independent Innovation Foundation of Shandong University [HFSDU-2009JQ011]
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One-dimensional CdS@TiO2 core-shell heterostructures were fabricated via the hydrolysis of tetrabutyl titanate (TBT) oil performed 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 TiO2 shell, resulting in the formation of TiO2 nanoparticles and nanolayer-modified CdS@TiO2 heterostructures. Degradation of methylene blue using CdS@TiO2 core-shell heterostructures as photocatalysts under visible light irradiation was investigatcd. Comparative photocatalytic tests showed that the TiO2 nanoparticles-modified heterostructure exhibited a superior activity due to the passivity of photogenerated charge carriers.
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