TiO<SUB>2</SUB>/SnO<SUB>2</SUB>复合氧化物的制备和光谱特性

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摘要：为了研究TiO₂/SnO₂复合氧化物的光学特性，用胶体化学方法制备了以SnO₂为内核的TiO₂/SnO₂复合氧化物，并且用紫外-可见光吸收光谱、X射线衍射和红外光谱对TiO₂/SnO₂复合氧化物的特性进行了分析。结果显示：TiO₂和TiO₂/SnO₂的能带宽度分别为4.13和3.86 eV，表现出量子尺寸效应;TiO₂/SnO₂在紫外区域具有宽的强吸收带。X射线衍射中TiO₂的(110)衍射峰的位置移动了1.6°，强度也发生了变化;与TiO₂红外光谱相比，TiO₂/SnO₂中Ti—O键的伸缩振动由500 cm^-1移到了656 cm^-1，并有560 cm^-1的肩峰，与吸附水相应的1 650 cm^-1附近的吸收峰和3 420 cm^-1的吸收峰均有所增加。

关键词：TiO₂/SnO₂;复合氧化物;制备;特性

Abstract：To study the spectral characteristic of TiO₂/SnO₂, TiO₂/SnO₂ composite oxide with SnO₂ inside kernel was fabricated by colloid chemistry method, and was studied with UV-visible absorption spectrum, X-ray diffraction and infrared spectrum. The results showed that the bandgap widths of TiO₂ and TiO₂/SnO₂ were 4.13 and 3.86 eV, respectively. TiO₂/SnO₂ had a widest and strong absorption band in the ultraviolet range. There was a quantum effect. In the X-ray diffraction, the station of TiO₂ (110) diffraction peak moved 1.6°, and its intensity changed. Compared with TiO₂ infrared spectrum, the Ti—O stretching vibration of TiO₂/SnO₂ moved from 500 to 656 cm^-1, and had 560 cm^-1 shoulder peak. The intensity of the peaks near 1 650 and 3 420 cm^-1 corresponding to water absorbing peaks increased.

Key words：TiO₂/SnO₂;Composite oxides;Preparation;Characteristic

收稿日期: 2004-04-28 修订日期: 2004-08-12

中图分类号:	O612.4
	O484.4

通讯作者: 刘成林

引用本文:

刘成林¹，钟菊花²，李远光²，张兆奎² . TiO₂/SnO₂复合氧化物的制备和光谱特性[J]. 光谱学与光谱分析, 2005, 25(12): 1947-1949.
LIU Cheng-lin¹, ZHONG Ju-hua², LI Yuan-guang², ZHANG Zhao-kui² . Preparation and Spectral Characteristic of TiO₂/SnO₂ Composite Oxides . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(12): 1947-1949.

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