One-Step High-Temperature Solvothermal Synthesis of TiO2/Sulfide Nanocomposite Spheres and Their Solar Visible-Light Applications

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• 作者：Shangjun Ding ; Xin Yin ; Xujie L眉 ; Yaoming Wang ; Fuqiang Huang ; Dongyun Wan
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2012
• 出版时间：January 25, 2012
• 年：2012
• 卷：4
• 期：1
• 页码：306-311
• 全文大小：448K
• 年卷期：v.4,no.1(January 25, 2012)
• ISSN：1944-8252

文摘

A one-step high-temperature hydrated-sulfate assisted solvothermal method has been developed to synthesize TiO₂/sulfide nanocomposite spheres. Different hybrid spheres of TiO₂/CdS, TiO₂/Cu₂S, TiO₂/FeS, TiO₂/Co₉S₈, and TiO₂/ZnS were readily prepared by exploiting different hydrated sulfate. The hydrated sulfate has been proved to play multifunctional roles during the synthetic process, such as spherical template, water supplier, and composition controller. Nanocrystal CdS can be reduced from CdSO₄ at a high solvothermal temperature of 350 掳C, and the TiO₂/CdS nanocomposite spheres prepared by this method exhibit superior visible-light-driven photocatalytic efficiency because of its effective heterointerface and high crystallinity.

Keywords:

titanium dioxide; nanocomposite; solvothermal method; visible-light photocatalysis; hydrated sulfate