TiO2纳米管电极金属离子掺杂的表征

doi:10.7517/j.issn.1674-0475.2011.01.54

摘要/Abstract

摘要： 采用浸渍法对TiO₂纳米管电极进行Zn²⁺、Fe³⁺、Cu²⁺离子的掺杂改性,并进行了各种性能表征.扫描电镜(SEM)及X射线衍射光谱(XRD)结果表明,金属离子掺杂后的TiO₂纳米管电极依然保持了良好的表面形态及锐钛矿晶型,纳米管的直径为60-100 nm,其晶面主要为101面;可见紫外漫反射光谱(DRS)分析表明,进行掺杂的TiO₂纳米管电极的光学性质有不同程度的改变,Zn²⁺、Fe³⁺和Cu²⁺掺杂的TiO₂纳米管电极的禁带宽度分别为3.37 eV3、.14 eV、2.86 eV.这表明掺Cu²⁺的TiO₂纳米管电极的吸收边带发生了明显的红移.

关键词: TiO₂纳米管电极, 浸渍, 掺杂, 禁带宽度

Abstract: The Zn²⁺,Fe³⁺ and Cu²⁺ are doped on TiO₂ nanotubes electrode using dipping method in this study.The properties of doped TiO₂ nanotubes electrode are characterized using some advanced analytic methods.It is found from the images of scanning electron microscope (SEM) and patterns of X-ray diffraction (XRD) that the doped TiO₂ nanotubes electrode,whose nanotubes diameter are range from 60 to 100 nm,still remain the original morphology and anatase crystal structure with 101 crystal face.However,the results of UV-Vis diffusion reflectance spectroscopy (DRS) indicate that the initial absorption edges for the three doped TiO₂ nanotubes electrodes shift at different degree.Energy band gaps of Zn²⁺,Fe³⁺ and Cu²⁺ doped TiO₂ nanotubes are 3.37 eV,3.14 eV and 2.86 eV,respectively.This indicates that the absorption edge of the TiO₂ nanotubes doped with Cu²⁺ is red-shift.

Key words: TiO₂ nanotubes electrode, dipping, dopant, energy band gaps

中图分类号:

阮修莉, 邵冬海. TiO₂纳米管电极金属离子掺杂的表征[J]. 影像科学与光化学, 2011, 29(1): 54-62.

RUAN Xiu-li, SHAO Dong-hai. Characterization of Metal Ion Doped TiO₂ Nanotubes Electrode[J]. Imaging Science and Photochemistry, 2011, 29(1): 54-62.

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TiO₂纳米管电极金属离子掺杂的表征

Characterization of Metal Ion Doped TiO₂ Nanotubes Electrode

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