新型CdS/TiO2纳米复合材料的制备及其可见光催化性能研究

doi:10.7517/j.issn.1674-0475.2008.06.489

影像科学与光化学 ›› 2008, Vol. 26 ›› Issue (6): 489-498.DOI: 10.7517/j.issn.1674-0475.2008.06.489

新型CdS/TiO₂纳米复合材料的制备及其可见光催化性能研究

徐占霞, 崔冠军, 张敏, 杨建军

河南大学, 特种功能材料重点实验室, 河南, 开封, 475001

收稿日期:2008-03-15 修回日期:2008-06-02 出版日期:2008-11-23 发布日期:2008-11-23
通讯作者: 杨建军,电话:0378-3886372,E-mail:yangjiangjun@henu.edu.cn.
基金资助:
河南省高校新世纪优秀人才支持计划(2006HANCET-13)

Preparation of the Novel CdS/TiO₂ Nanocomposites and Its Visible-light Photocatalytic Properties

XU Zhan-xia, CUI Guan-jun, ZHANG Min, YANG Jian-jun

Key Laboratory for Special Functional Materials, Henan University, Kaifeng 475001, Henan, P. R. China

Received:2008-03-15 Revised:2008-06-02 Online:2008-11-23 Published:2008-11-23

摘要/Abstract

摘要： 采用浸渍法和水热法相结合制备了新型的CdS/TiO₂纳米复合材料,并采用X射线衍射(XRD)、透射电子显微镜(TEM)、UV-Vis吸收光谱(UV-VIS)、电子自旋共振谱(ESR)等对样品进行了表征,XRD、TEM表明所制备的新型CdS/TiO₂粒径小、分散均匀,TiO₂以锐钛矿型存在,CdS以高分散的立方相和六方相存在,对比直接法制备的CdS/TiO₂,新型的CdS/TiO₂对活性艳红X-3B具有明显提高的可见光催化活性;大量的束缚单电子氧空位及电子之间强相互作用是新型CdS/TiO₂可见光催化活性提高的主要原因.

关键词: 新型纳米复合材料, CdS/TiO₂, 单电子氧空位, 可见光光催化

Abstract: A novel CdS/TiO₂ nanocomposites were prepared respectively by impregnation and hy-drothermal reaction,and the structure and morphology of the samples were characterized by Trans-mission electron microscope (TEM),X-ray diffraction (XRD),UV-Vis absorption spectra (UV-VIS),Electron spin resonance (ESR) et al.The results obtained by X-ray diffraction (XRD) and Transmission electron microscope(TEM) showed that the particles of the novel nanocomposites are small and uniformly dispersed,CdS composited TiO₂ materials consisted of anatase with highly dis-persed cubic and hexagonal phase.The results of photocatalytic degradation of the brilliant X-3B in the visible light irradiation indicated that the novel CdS/TiO₂ was greatly improved compared CdS/TiO₂ prepared directly.The formation of a large number of single electron bound oxygen vacances and the strong electronic interaction between CdS and TiO₂ are the main reason for the visible-light photocatalytic activity of the novel CdS/TiO₂.

Key words: novel nanocomposites, CdS/TiO₂, single electron oxygen vacancy, visible-light photo-catalysis

中图分类号:

徐占霞, 崔冠军, 张敏, 杨建军. 新型CdS/TiO₂纳米复合材料的制备及其可见光催化性能研究[J]. 影像科学与光化学, 2008, 26(6): 489-498.

XU Zhan-xia, CUI Guan-jun, ZHANG Min, YANG Jian-jun. Preparation of the Novel CdS/TiO₂ Nanocomposites and Its Visible-light Photocatalytic Properties[J]. Imaging Science and Photochemistry, 2008, 26(6): 489-498.

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新型CdS/TiO₂纳米复合材料的制备及其可见光催化性能研究

Preparation of the Novel CdS/TiO₂ Nanocomposites and Its Visible-light Photocatalytic Properties

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