| Synthesis and characterization of bismuth-doped tin dioxide nanometer powders |
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| 作者姓名： | 何秋星 涂伟萍 胡剑青 |
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| 作者单位： | [1]School of Chemical and Energy Engineering, South China University of Technology, Guangzhou 510640, China [2]Department of Chemical Engineering, Shaoguan University, Shaoguan 512005, China |
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| 基金项目： | Project（GC200603） supported by the 0pen Fund of Guangdong Provincial Key Laboratory for Green Chemicals; proiect supported by the Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Ministry of Education of China |
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| 摘 要： | Bismuth-doped tin dioxide nanometer powders were prepared by co-precipitation method using SnCl4 and Bi（NO3）3 as raw materials. The effects of calcining temperature and doping ratio on the particle size, composition, spectrum selectivity of bismuth-doped tin dioxide and the phase transition of Bi-Sn precursor at different temperatures were studied by means of X-ray diffraction, transmission electron microscopy, ultraviolet-visual-near infrared diffuse reflection spectrum and the thermogravimetric-differential scanning calorimetry. The results show that prepared bismuth-doped tin dioxide powders have excellent characteristics with a single-phase tetragonal structure, good dispersibility, good absorbency for ultraviolet ray and average particle size less than 10 nm. The optimum conditions for preparing bismuth-doped tin dioxide nanometer powders are as follows： calcining temperature of 600℃, ratio of bismuth-doped in a range of 0. 10 - 0.30, and Bi-Sn precursor being dispersed by ultrasonic wave and refluxed azeotropic and distillated with mixture of n-butanol and benzene. The mechanism of phase transition of Bi-Sn precursor is that Bi^3＋ enters Sn-vacancy and then forms Sn-O-Bi bond.
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| 关 键 词： | 铋 掺杂 二氧化锡 纳米粉末 共沉淀 超声波 |
| 文章编号： | 1005-9784（2006）05-0519-06 |
| 收稿时间： | 2006-01-23 |
| 修稿时间： | 2006-03-18 |
Synthesis and characterization of bismuth-doped tin dioxide nanometer powders |
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| He Qiu-xing , Tu Wei-ping and Hu Jian-qing.Synthesis and characterization of bismuth-doped tin dioxide nanometer powders[J].Journal of Central South University of Technology,2006,13(5):519-524. |
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| Authors: | He Qiu-xing Tu Wei-ping and Hu Jian-qing |
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| Affiliation: | (1) School of Chemical and Energy Engineering, South China University of Technology, 510640 Guangzhou, China;(2) Department of Chemical Engineering, Shaoguan University, 512005 Shaoguan, China |
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| Abstract: | Bismuth-doped tin dioxide nanometer powders were prepared by co-precipitation method using SnCl4 and Bi(NO3)3 as raw materials. The effects of calcining temperature and doping ratio on the particle size, composition, spectrum selectivity
of bismuth-doped tin dioxide and the phase transition of Bi-Sn precursor at different temperatures were studied by means of
X-ray diffraction, transmission electron microscopy, ultraviolet-visual-near infrared diffuse reflection spectrum and the
thermogravimetric-differential scanning calorimetry. The results show that prepared bismuth-doped tin dioxide powders have
excellent characteristics with a single-phase tetragonal structure, good dispersibility, good absorbency for ultraviolet ray
and average particle size less than 10 nm. The optimum conditions for preparing bismuth-doped tin dioxide nanometer powders
are as follows: calcining temperature of 600 °C, ratio of bismuth-doped in a range of 0.10–0.30, and Bi-Sn precursor being
dispersed by ultrasonic wave and refluxed azeotropic and distillated with mixture of n-butanol and benzene. The mechanism of phase transition of Bi-Sn precursor is that Bi3+ enters Sn-vacancy and then forms Sn-O-Bi bond.
Foundation item: Project (GC200603) supported by the Open Fund of Guangdong Provincial Key Laboratory for Green Chemicals; project supported
by the Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Ministry of Education of China |
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| Keywords: | bismuth-doped tin dioxide tin dioxide nanometer powders co-precipitation method ultrasonic wave |
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