Facile development of carbon quantum dot deposited titanate-based materials for environmental application

In this study, we reported a facile EDTA-Na2 assisted method to synthesize CQD deposited titanate based materials for photocatalytic degradation of methylene blue (MB) dye. A variety of characterization methods (XRD, FTIR, DRS, Raman, UV–Vis, BET, etc.) were used to study the characteristics of the obtained materials. The results showed that the CQD deposited titanate based materials had stronger visible light absorption than the pristine titanate-based materials. Moreover, they also exhibited the enhanced photocatalytic activity in the degradation of MB into CO2. More than 90% of MB was quickly removed by one of these materials after 90-min reaction which obeyed the first-order kinetic model. .OH, .O2− and h+ were dominant active species for the MB photodegradation.