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Vol. 28 No. 6 (2016): Vol 28 Issue 6

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Synthesis of Graphene Titanium Dioxide Composites as Photocatalytic Materials for Degradation of Moderacid Black

https://doi.org/10.14233/ajchem.2016.19660
Thanh Xuan Nguyen
Faculty of Chemistry, Hanoi National University of Education, 136 Xuan Thuy Cau Giay, Hanoi, Vietnam
Mo Thi Nguyen
Faculty of Chemistry, Hanoi National University of Education, 136 Xuan Thuy Cau Giay, Hanoi, Vietnam
Hung Van Nguyen
Faculty of Physics, Hanoi National University of Education, 136 Xuan Thuy Cau Giay, Hanoi, Vietnam
Hung Van Hoang
Faculty of Chemistry, Hanoi National University of Education, 136 Xuan Thuy Cau Giay, Hanoi, Vietnam

Corresponding Author(s) : Hung Van Hoang

hunghv@hnue.edu.vn; hvhungsp@yahoo.com

Asian Journal of Chemistry, Vol. 28 No. 6 (2016): Vol 28 Issue 6

Abstract

Graphene titanium dioxide composites with different ratios of graphene to TiO2 have been successfully synthesized by a facile hydrothermal method using graphite and titanium tetrachloride as precursors. The composites were characterized by scanning electron microscope, Raman and ultraviolet-visible spectroscopies, X-ray diffraction and thermogravimetric analysis. A composite with titanium content of 20 % was revealed to be the most thermally stable in comparison to other composites, with the most uniform distribution of TiO2 on graphene sheets. The photodegradation study and thermogravimetric analysis showed that the composite with 20 % of titanium is a very stable material. After 15 times use, the photodegradation efficiency remained almost constant with the value of 99.38 %.

Keywords

Graphene TiO2 Hydrothermal method Photocatalyst Moderacid black
Nguyen, T. X., Nguyen, M. T., Nguyen, H. V., & Hoang, H. V. (2016). Synthesis of Graphene Titanium Dioxide Composites as Photocatalytic Materials for Degradation of Moderacid Black. Asian Journal of Chemistry, 28(6), 1297–1303. https://doi.org/10.14233/ajchem.2016.19660
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