Issue

Vol. 3 No. 1 (2011)

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

https://doi.org/10.1007/BF03353645
Hongwei Wei
Key Laboratory for Colloid & Interface Chemistry of Education Ministry, Department of Chemistry, Shandong University, Jinan 250100, P. R. China
Le Wang
State Key Laboratory of Ceramic Zibo Entry and Exit Inspection and Quarantine Bureau, Zibo 255031, P. R. China
Zhipeng Li
Key Laboratory for Colloid & Interface Chemistry of Education Ministry, Department of Chemistry, Shandong University, Jinan 250100, P. R. China
Shouqing Ni
Key Laboratory for Colloid & Interface Chemistry of Education Ministry, Department of Chemistry, Shandong University, Jinan 250100, P. R. China
Quanqin Zhao
Key Laboratory for Colloid & Interface Chemistry of Education Ministry, Department of Chemistry, Shandong University, Jinan 250100, P. R. China

Corresponding Author: Quanqin Zhao

zhaoqq@sdu.edu.cn

Nano-Micro Letters, Vol. 3 No. 1 (2011), Article Number: 6-11

Abstract

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.

Keywords

One-dimensional CdS@TiO2 heterostructures Photocatalysis Methylene blue Morphology Mechanism
Wei, Hongwei, Le Wang, Zhipeng Li, Shouqing Ni, and Quanqin Zhao. 2011. “Synthesis and Photocatalytic Activity of One-Dimensional CdS@TiO2 Core-Shell Heterostructures”. Nano-Micro Letters 3 (1):6-11. https://doi.org/10.1007/BF03353645.
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