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现代化工  2017, Vol. 37 Issue (10): 101-104    DOI: 10.16606/j.cnki.issn0253-4320.2017.10.024
  科研与开发 本期目录 | 过刊浏览 | 高级检索 |
Bi4Ti3O12/TiO2异质结的原位制备及其光化学性能研究
李言, 王方方, 傅正平, 陆亚林
中国科学技术大学化学与材料科学学院, 安徽 合肥 230026
Synthesis and photocatalytic performance of Bi4Ti3O12/TiO2 heterojunction
LI Yan, WANG Fang-fang, FU Zheng-ping, LU Ya-lin
School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China
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摘要 利用Bi4Ti3O12和TiO2的结构相似性,以TiO2纳米片为原料,用水热法制备了Bi4Ti3O12/TiO2异质结,并通过X射线衍射、扫描电子显微镜和高分辨透射电镜等证实了异质结结构的形成。可见光催化反应活性的表征说明Bi4Ti3O12/TiO2异质结结构相较于TiO2或Bi4Ti3O12性能有明显提高,光电化学表征进一步证实Bi4Ti3O12/TiO2异质结结构能有效促进光生电子-空穴对的分离。实验结果还表明,这种增强作用与两相的比例密切相关,并通过控制两相比例对性能进行了优化。
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李言
王方方
傅正平
陆亚林
关键词:  可见光光催化  异质结  Bi4Ti3O12  TiO2  水热法    
Abstract: By means of the similar structures between Bi4Ti3O12 and TiO2,the Bi4Ti3O12/TiO2 heterojunction is made by the hydrothermal method using TiO2 nano sheets as raw materials.The formation of heterojunction structure is confirmed by X ray diffraction,scanning electron microscopy and high-resolution transmission electron microscopy.The characterization of visible light catalytic activity shows that the performances of the Bi4Ti3O12/TiO2 heterojunction structure are significantly improved compared to TiO2 or Bi4Ti3O12.The photoelectrochemical characterization further confirms the Bi4Ti3O12/TiO2 heterojunction structure can effectively promote the separation of photogenerated electron and hole pairs.The experimental results also show that the enhancement is closely related to the ratio between two phases,so that the performance is optimized by controlling the phase ratio.
Key words:  visible light photocatalysis    heterojunction    Bi4Ti3O12    TiO2    hydrothermal method
收稿日期:  2017-04-19                出版日期:  2017-10-20
TB321  
基金资助: 安徽高校省级自然科学研究项目(KJ2014ZD40)
通讯作者:  傅正平(1971-),男,博士,副教授,从事光催化材料研究,通讯联系人,0551-63603194,fuzp@ustc.edu.cn。    E-mail:  fuzp@ustc.edu.cn
作者简介:  李言(1992-),男,硕士研究生,研究方向为陶瓷材料,liyan7@mail.ustc.edu.cn
引用本文:    
李言, 王方方, 傅正平, 陆亚林. Bi4Ti3O12/TiO2异质结的原位制备及其光化学性能研究[J]. 现代化工, 2017, 37(10): 101-104.
LI Yan, WANG Fang-fang, FU Zheng-ping, LU Ya-lin. Synthesis and photocatalytic performance of Bi4Ti3O12/TiO2 heterojunction. Modern Chemical Industry, 2017, 37(10): 101-104.
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http://www.xdhg.com.cn/CN/10.16606/j.cnki.issn0253-4320.2017.10.024  或          http://www.xdhg.com.cn/CN/Y2017/V37/I10/101
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