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Synthesis and photocatalytic performance of CdS nano structure of InOCl nano films and indium, zinc doped.

Author: LiangZuo
Tutor: YangHeQing
School: Shaanxi Normal University
Course: Physical and chemical
Keywords: InOCl nanosheets CdS flowerlike nanostructures CdS branchlikenanostuctures Doping optical properties
CLC: O643.36
Type: Master's thesis
Year: 2013
Downloads: 13
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Abstract


Large area of InOCl nanosheets, In doped CdS flowerlike architectures and Zn doped CdS branchlike architectures have been synthesized through thermal decomposition of InCl3aqueous solution, hydrothermal route, respectively. Morphologies and structures of these products were characterized by means of scanning electron microscopy, X-ray diffraction, UV-visible spectrum and transmission electron microscopy. The UV-Visible and photocatalytic activity of InOCl nanosheets, In doped CdS flowerlike architectures,Zn doped CdS branchlike architectures have been investigated, and the relations between morphologies and properties have been revealed.These research results would provide a base for further research on syntheses of MOX and doped nanostructures, the physical and chemical properties of MOX and doped nanostructures and their applications in photonic and electronic devices, dilute magnetic semiconductor, solar cell and photocatalyst.(1) Synthesis and photocatalytic activity of InOCl nanosheets:Large amount of InOCl nanosheets on the Si wafer were obtained through direct hydrolysis reaction of InCl3aqueous solution at400℃. The width of nanosheet structure is about1.5-2.5μm and the thickness distribution is in the range of75-93nm. From the UV-Visible absorption spectrum, it is found that the absorption edge of InOCl nanosheets is about284nm. The XRD analysis shows the as-obtained nanosheets are single-crystalline InOCl with an orthorhombic structure. The as-obtained InOCl nanosheets show higher photocatalytic activity than commercial TiO2powder for degradation of malachite green.(2) Synthesis and photocatalytic activity of In doped CdS flowerlike architectures:In doped CdS flowerlike architectures were synthesized by a hydrothermal reaction of CdCl2, InCl3with thiocarbamide at180℃for6.0h. UV-Visible absorption spectrum and photocatalytic activity were investigated. It was found that the adsorption edge shifts to longer wavelengths. The as-obtained In doped CdS flowerlike architectures show higher photocatalytic activity than the pure CdS branchlike architectures and commercial CdS powder for degradation of malachite green.(3) Synthesis and photocatalytic activity of Zn doped CdS branchlike architectures:Zn doped CdS branchlike architectures were synthesized by a hydrothermal reaction of CdCl2, ZnCl2with thiocarbamide at180℃for6h. The UV-Visible absorption spectrum of Zn doped CdS branchlike architectures were investigated. It was found that the adsorption edge shifts to shorter wavelengths with decreasing of the dosage of ZnCl2, and the Zn doped CdS branchlike architectures show higher photocatalytic activity than the pure CdS branchlike architectures and commercial CdS powder for degradation of malachite green.

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CLC: > Mathematical sciences and chemical > Chemistry > Physical Chemistry ( theoretical chemistry ),chemical physics > Chemical kinetics,catalysis > Catalytic > Catalyst
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