Identification, Detection, and the Enhanced Removal Mechanism of DDT From Aqueous Solutions Using Facile Green Synthesis of Carbon Quantum Dots

ABSTRACT Dichlorodiphenyltrichloroethane (DDT) pollution is an ongoing worldwide environmental hazard due to its persistence and detrimental impact on ecosystems. Carbon quantum dots (CQD) made from dried mushroom biomass using a sustainable and eco‐friendly synthesis process are investigated in this work as a potential new approach to dealing with DDT contamination. Verifying their efficient synthesis and potential for photocatalytic applications, the CQD had their structural, optical, and chemical characteristics evaluated. Methods such as energy‐dispersive x‐ray spectroscopy (EDS), Fourier‐transform infrared spectroscopy (FT‐IR), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) were used to make this evaluation. Through photocatalytic tests, we looked at how well CQD produced from mushrooms decomposed DDT when exposed to UV light. The optimal conditions for photocatalytic degradation, including CQD dose, starting DDT concentration, time, and pH, were determined by a thorough investigation. Based on the results, the ideal reaction parameters were found to be a pH range of 3–5, a catalyst concentration of 2 g/L, and a reaction period of 1 h at room temperature, all of which led to a 91.70% degradation rate in DDT. The photocatalyst's stability and recyclability were tested, proving that the CQDs have long‐lasting properties that may be used in many applications. The proposed method offers an effective approach for eliminating DDT while also fulfilling the requirement for sustainable and environmentally friendly materials in remediation technologies. This study enhances the developing area of photocatalytic remediation and highlights the adaptability of CQDs as highly promising and eco‐friendly substances for eliminating persistent organic contaminants like DDT.