2026-10-14T17:19:02Z https://www.scidb.cn/oai

10.57760/sciencedb.j00125.00258 2026-08-03T17:30:34Z

2026-08-03 A combination of biomass-derived carbon quantum dots and metal-doped TiO2 for enhanced visible light photodegradation doi:10.57760/sciencedb.j00125.00258 en  Aquatic effluent from industrial sources, par ticularly the textile industry, is a major source of environ mental pollution and is in dire need of a global scientific initiative for its sustainable removal. 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. Among them, Fe-doped TiO2 /CQDs derived from yellow banana peel had the highest efficiency of 84%, which is ～2.5 times that of pristine anatase TiO2 . Upon comparing the degrada tion efficiencies of the doped-TiO2 samples without the CQDs, Fe-TiO2 exhibited the highest performance with 65% degrada tion, followed by Co-TiO2 and Mn-TiO2 at 64% and 61.2%, respectively. The results suggest that modifying TiO2 composites with biomass-derived CQDs produces good degradation performance while converting bio-waste into functional materials. Agricultural biomass; Carbon quantum dots; Fluorescence emission; Titanium dioxide; Solar-driven pho tocatalysis Noona Shahada Selwin Joseyphus RESTRICTED dataset http://www.doi.org/10.1016/S1872-5805(26)61064-5 Science Data Bank