| CdS/TiO2复合纳米微粒的原位合成及性质研究 |
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| 引用本文： | 郝恩才,孙轶鹏,杨柏,沈家骢.CdS/TiO2复合纳米微粒的原位合成及性质研究[J].高等学校化学学报,1998,19(8):1191-1194. |
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| 作者姓名： | 郝恩才 孙轶鹏 杨柏 沈家骢 |
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| 作者单位： | 吉林大学化学系, 长春, 130023 |
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| 基金项目： | 国家自然科学基金，59773014， |
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| 摘 要： | 采用一种新方法,在TiO2表面原位合成CdS纳米微粒,并用红外光谱跟踪了CdS/TiO2复合纳米微粒的形成过程.紫外吸收光谱研究表明TiO2对CdS纳米微粒的形成有很好的稳定作用,荧光光谱研究结果表明,这种纳米异质结构有着良好的电荷分离.
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| 关 键 词： | 复合半导体纳米微粒 修饰 稳定作用 电荷分离 |
| 收稿时间： | 1997-07-18 |
Synthesis and Properties of CdS/TiO2 Coupled Semiconductor Nanoparticles |
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| HAO En-Cai,SUN Yi-Peng,YANG Bai,SHEN Jia-Cong.Synthesis and Properties of CdS/TiO2 Coupled Semiconductor Nanoparticles[J].Chemical Research In Chinese Universities,1998,19(8):1191-1194. |
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| Authors: | HAO En-Cai SUN Yi-Peng YANG Bai SHEN Jia-Cong |
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| Institution: | Department of Chemistry, Jilin University, Changchun, 130023 |
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| Abstract: | A new kind of preparation method of CdS/TiO 2 coupled semiconductor nanoparticle in aqueous solution is described, in which CdS is in situ formed on the surface of TiO 2. Furthermore, coupling of the two semiconductor particles via the bifunctional thiols offers an opportunity to sensitize TiO 2 with a large bandgap and energetically low lying conduction band by CdS with a small bandgap and an energetically high lying conduction band. IR spectra were used to follow the formation process of this coupled nanoparticles. UV Vis spectra illustrated well the stability effect of TiO 2 on the formation of CdS nanoparticles. The quenching of CdS emission indicated that there were an effective charge separation between dissimilar semiconductor particles. |
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| Keywords: | Coupled semiconductor nanoparticles Modification Stabilized effect Charge separation |
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