Synthesis of CdSe-graphene-TiO2 composites by a facile hydrothermal method with high photocatalytic performance
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초록
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 CdSeTiO2. 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.
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 CdSeTiO2. 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.
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