Articles
  • Synthesis of CdSe-graphene-TiO2 composites by a facile hydrothermal method with high photocatalytic performance
  • Ze-Da Menga, Lei Zhua, Chang Sung Lima, Kefayat Ullaha, Shu Yea, Kwang-Youn Chob and Won-Chun Oha,*
  • a Department of Advanced Materials Science & Engineering, Hanseo University, Seosan, Chungnam, Korea, 356-706 b Korea Institute of Ceramic Engineering and Technology, Seoul 153-801, Korea
Abstract
Herein we obtained a chemically bonded CdSe-graphene-TiO2 composites using a facile hydrothermal method. During the hydrothermal reaction, both of the reduction of graphene oxide and loading of CdSe and TiO2 particles were achieved. The as-prepared CdSe-graphene-TiO2 composites possessed great adsorptivity of dyes, extended light absorption range, and efficient charge separation properties simultaneously. Hence, in the photodegradation of methylene blue, a significant enhancement in the reaction rate was observed with CdSe-graphene-TiO2 composites, compared to the pure TiO2 and CdSe- TiO2. The high activity can be attributed to the synergetic effects of high charge mobility, and red shift in absorption edge of CdSe-graphene-TiO2 composites.

Keywords: CdSe-graphene-TiO2 composites, Hydrothermal, UV-vis DRS, Photodegradation.

This Article

  • 2013; 14(3): 349-354

    Published on Jun 30, 2013