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

被引：0
作者：
Hongwei Wei
Le Wang
Zhipeng Li
Shouqing Ni
Quanqin Zhao
机构：
[1] Shandong University,Key Laboratory for Colloid & Interface Chemistry of Education Ministry, Department of Chemistry
[2] State Key Laboratory of Ceramic Zibo Entry and Exit Inspection and Quarantine Bureau,undefined
来源：
Nano-Micro Letters | 2011年 / 3卷
关键词：
One-dimensional CdS@TiO; heterostructures; Photocatalysis; Methylene blue; Morphology; Mechanism;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
One-dimensional CdS@TiO2 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 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 investigated. 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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页码：6 / 11
页数：5
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