Enhanced chemical interaction between TiO<sub>2sub> and graphene oxide for photocatalytic decolorization of methylene blue
- 作者：YuLin Min<sup>asup><sup> ; sup><sup>bsup><sup> ; sup><sup>ahaqmylin@yahoo.com.cnsup> ; Kan Zhang<sup>csup><sup> ; sup><sup>zhangkan112255@hotmail.comsup> ; Wei Zhao<sup>dsup> ; FangCai Zheng<sup>asup><sup> ; sup><sup>bsup> ; YouCun Chen<sup>asup><sup> ; sup><sup>bsup> ; YuanGuang Zhang<sup>asup><sup> ; sup><sup>bsup>
- 关键词：Graphene oxide ; Graphene/TiO2 composite ; Solvothermal reaction ; Photocatalytic activity
- 刊名：Chemical Engineering Journal
- 出版年：2012
- 期刊代码：16_13858947
- 类别：ce
- 出版时间：15 June, 2012
- 卷：193-194
- 期：Complete
- 页码：203-210
- 文件大小：1131 K
摘要
We have reported a simple strategy for the improvement of chemically anchoring TiO<sub>2sub> nanoparticles onto graphene, which was used as a visible-light responsive photocatalyst for decolorizing methylene blue. The characterization results indicated that the functional groups of graphene oxide (GO) could adsorb and react with Ti(OH)<sub>xsub> complex by chemical interactions, such as chemiadsorption, electronegativity and coordination, benefiting for well anchoring TiO<sub>2sub>. Full and intimate coverage of TiO<sub>2sub> on graphene sheets has significantly enhanced their photocatalytic activity under visible light due to the existence of chemical bonds (Ti-C and Ti-O-C), while there is no such enhancement under UV light.