Synthesis and Characterization of a Ternary Nanocomposite Based on CdSe Decorated Graphene-TiO2 and its Application in the Quantitative Analysis of Alcohol with Reduction of CO2

In this work, photocatalytic CO2 reduction over a CdSe-graphene-TiO2 nanocomposite has been studied. The obtained material was successfully fabricated via ultrasonic technique. The physical properties of the as-synthesized materials were characterized by some physical techniques. The TiO2 and CdSe dispersed graphene nanocomposite showed excellent results of strong reduction rates of CO2 compared to the results of bare TiO2 and binary CdSe-graphene. An outstanding point of the combination of CdSe-TiO2 and graphene appeared in the form of great photocatalytic reduction capability of CO2. The photocatalytic activity of the asfabricated composite was tested by surveying for the photoreduction of CO2 to alcohol under UV and visible light irradiation, and the obtained results imply that the as-prepared CdSe-graphene-TiO2 nanocomposite is promising to become a potential candidate for the photocatalytic CO2 reduction. Key words: CO2 reduction, CdSe-graphene-TiO2, Photocatalytic activity