Template-free synthesis of carbon doped TiO₂ mesoporous microplates for enhanced visible light photodegradation

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• 作者：Juming Liu ; Lu Han ; Huiyan Ma ; Hao Tian ; Jucai Yang ; Qiancheng Zhang…
• 关键词：Acetic acid ; Carboxylate ; TiO2 mesoporous microplates ; Carbon doped ; Bandgap narrowing
• 刊名：Chinese Science Bulletin
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：61
• 期：19
• 页码：1543-1550
• 全文大小：2,503 KB
• 刊物主题：Science, general; Life Sciences, general; Physics, general; Chemistry/Food Science, general; Earth Sciences, general; Engineering, general;
• 出版者：Springer Berlin Heidelberg
• ISSN：1861-9541
• 卷排序：61

文摘

Titanium dioxide (TiO₂) is widely employed as a solid photocatalyst for solar energy conversion and environmental remediation. The ability to construct porous TiO₂ with controlled particle size and narrowed bandgap is an essential requirement for the design of highly efficient and recyclable photocatalysts. Here, we report a template-free acetic acid induced method for the synthesis of visible-light responsive carbon-doped TiO₂ microplates with high crystallinity and mesoporous structure. It is shown that the electron-withdrawing bidentate carboxylate ligands derived from acetic acid can narrow the bandgap of TiO₂ (1.84 eV) substantially. Moreover, the resultant microplate photocatalysts exhibit excellent photocatalytic efficiency and solid–liquid separation performance, which will be beneficial for future industrial applications.