Homogeneous ZnS coating onto TiO₂ nanoparticles by a simple one pot sonochemical method

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• 作者：Seung Soo Lee ; Ki-Taek Byun ; Jong Pil Park ; Sin Kyu Kim ; Jong Chan Lee ; Suk-Kyu Chang ; Ho-Young Kwak ; Il-Wun Shim
• 关键词：Sonochemistry ; ZnS-coated TiO₂ nanoparticles
• 刊名：Chemical Engineering Journal
• 出版年：2008
• 期刊代码：16_13858947
• 类别：ce
• 出版时间：15 May 2008
• 卷：139
• 期：1
• 页码：194-197
• 文件大小：466 K

摘要

TiO₂ nanoparticles were easily coated with ZnS in nano-scale through a simple one pot reaction under multibubble sonoluminescence (MBSL) conditions which can provide a very powerful and efficient coating system. The coating depths of ZnS shell were in 2–5 nm range in a core/shell type nanostructure which is very likely to be useful for the development of inorganic dye-sensitized solar cells. The ZnS-coating depths on TiO₂ in this system were found to be easily controlled in nano-scale by adjusting the amount of reactants and/or the sonication time. The ZnS-coated TiO₂ nanoparticles were characterized by XRD, UV–vis, EDS, and HR-TEM.