Fabrication of composite film comprising TiO₂/CdS and polyelectrolytes based on ionic attraction

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• 作者：Hao ; Encai ; Yang ; Bai ; Ren ; Hui ; Qian ; Xinming ; Xie ; Tengfeng ; Shen ; Jiacong ; Li ; Dongmei
• 关键词：TiO₂/CdS composite nanoparticles ; Alternating assembly ; Surface photovoltage response ; Charge separation
• 刊名：Materials Science and Engineering ; C
• 出版年：1999
• 期刊代码：63_09284931
• 类别：ms
• 出版时间：December 30, 1999
• 卷：10
• 期：1-2
• 页码：119-122
• 文件大小：308 K

摘要

Composite film comprising TiO₂/CdS nanoparticles and polyelectrolytes was fabricated based on electrostatic interaction. By utilizing cationic TiO₂ and anionic CdS colloids, we realized the assembly of dissimilar nanoparticles. The alternating assembly film of TiO₂/CdS and polyelectrolytes was further characterized by several methods including UV–Vis spectroscopy and transmission electron microscopy (TEM). Most importantly, surface photovoltage (SPV) measurements showed that interesting photoelectron energy conversion occurred in the TiO₂/CdS composite film.