Advanced degradation of organic pollutants using novel clay-based photocatalysts under visible light

This study focuses on the development of innovative clay-based nanocomposite materials for the efficient degradation of organic pollutants in aqueous media. A novel catalyst based on modified illite was synthesized and functionalized with active components to enhance its photocatalytic performance under visible light irradiation. The material was characterized using advanced techniques (XRD, FTIR, SEM-EDX, BET...), to confirm its structural and physicochemical properties.

The catalytic performance was evaluated through the degradation of model organic pollutants, including dyes and phenolic compounds. The results demonstrated high removal efficiency, reaching up to 99% degradation under optimized conditions (pH: 3, temperature: 50°C, oxidant concentration: 10 mM, and dose catalyst: 1 1g/L). The process involves a synergistic mechanism combining adsorption and advanced oxidation processes, leading to the generation of reactive species responsible for pollutant breakdown.

Special attention was given to operational parameters such as pH, catalyst dose, and oxidant concentration. The study also highlights the potential integration of pre-treatment techniques, such as electrocoagulation, to improve overall efficiency and reduce chemical oxygen demand (COD).

The proposed approach offers a sustainable, cost-effective, and environmentally friendly solution for wastewater treatment. This work contributes to the advancement of green technologies for environmental remediation and opens new perspectives for the reuse and recovery of heterogeneous catalysts.