A combination of biomass-derived carbon quantum dots and metal-doped TiO2 for enhanced visible light photodegradation

Among these, solar driven photocatalysis has emerged as a potential solution for promoting sustainable energy generation with minim al water pollution. We have developed a novel titanium di oxide (TiO2 )-based photocatalyst to address environment al concerns by modifying its crystalline structure by dop ing with transition metals such as Mn, Fe, and Co.

Hetero junction photocatalysts were generated by integrating the catalyst with carbon quantum dots (CQDs) fabricated from widely available agricultural biomass (banana peel) and have a blue fluorescence. Because of their combined properties, the CQDs/doped-TiO2 composites had a noticeably higher visible light ab sorption than both the doped-TiO2 and pure TiO2 NPs. Photocatalytic batch experiments showed that the synthesized compos ites had a high degradation efficiency towards the Rhodamine B dye.