Enhanced adsorption and photocatalysis capability of generally synthesized TiO2-carbon materials hybrids

Authors

Gang Cheng, Chonbuk National University, Wuhan Institute of Technology
Feifan Xu, Wuhan Institute of Technology
Jinyan XiongFollow
Fan Tian, Wuhan Institute of Technology
Jie Ding, Land Division, Defence Science And Technology Organisation, Wuhan Institute of TechnologyFollow
Florian J. Stadler, Shenzhen University, Chonbuk National UniversityFollow
Rong Chen, Wuhan Institute of Technology

RIS ID

108901

Publication Details

Cheng, G., Xu, F., Xiong, J., Tian, F., Ding, J., Stadler, F. J. & Chen, R. (2016). Enhanced adsorption and photocatalysis capability of generally synthesized TiO2-carbon materials hybrids. Advanced Powder Technology, 27 (5), 1949-1962.

Abstract

TiO2@RGO, TiO2@CNTs, and TiO2@C (glucose carbon) hybrid composites exhibiting both excellent adsorption capability and photocatalytic activity having great potential in pollutant removal were synthesized and composition and nanostructure were determined in detail by state-of-the-art methods. These hybrid materials show enhanced visible light absorption and RhB-dye removal capability via adsorption and photocatalysis with their efficiency generally increasing with carbon content. TiO2@C with low carbon concentration promotes photocatalytic performance, while increasing carbon amount improves the adsorption efficiency. Among the three kinds of TiO2-carbon hybrids, TiO2@RGO with optimized RGOcontent (2 wt.%) exhibited the best photocatalytic efficiency, attributed to efficient separation efficiency of injected electron and excited RhB with involving of RGO, while TiO2@C with 32 wt.% C showed the highest adsorption capability due to the most negative zeta potential and highest BET surface areas. This comparison study has revealed how TiO2@carbon material hybrids can be optimized for adsorption and photocatalytic toxin removal.