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本文采用水热法,以TiCl3和SnCl4.5H2O水溶液为前驱物,在180℃温度下反应24h。X能谱(EDS)显示:当前驱物中Ti3 +、Sn4 +离子比为4:1时,所得复合半导体纳米晶体中掺入的Sn的原子百分比为1%;当前驱物中Ti3 +、Sn4 +离子比为1:1时,掺入Sn的原子百分比为2.8%。实验结果表明在TiO2金红相中进行晶格替代掺杂是比较困难的。
In this paper, hydrothermal method, TiCl3 and SnCl4.5H2O aqueous solution as a precursor, at a temperature of 180 ℃ for 24h reaction. X-ray spectra (EDS) showed that the atomic percentage of Sn doped into the resulting composite semiconductor nanocrystals was 1% when the ratio of Ti3 + and Sn4 + in the precursor was 4: 1. When Ti3 + and Sn4 + Ion ratio of 1: 1, the atomic percentage of Sn is 2.8%. The experimental results show that it is more difficult to substitute the crystal lattice in TiO2 red phase.