Visible-Light-Driven Photocatalytic Degradation of Basic Yellow Dye Using TiO₂/GO Nanocomposites: A Sustainable Approach to Wastewater Treatment

The persistent presence of synthetic dyes in wastewater, particularly Basic Yellow, poses significantenvironmental and health risks due to their toxic and carcinogenic properties. In this study, TiO₂/GOnanocomposites were synthesized, characterized, and evaluated for their photocatalytic degradationefficiency of Basic Yellow dye. The nanocomposite exhibited enhanced photocatalytic performanceattributed to improved surface area, charge mobility, and reduced electron-hole recombination rates.Optimal conditions for dye removal were identified as pH ۱۱, a photocatalyst dosage of ۰.۰۱ g, and aninitial dye concentration of ۱۰ ppm, achieving a maximum removal efficiency of ۸۷% within ۱ hourunder visible light. Kinetic analysis confirmed that the degradation followed a pseudo-first-order modelwith an R² value of ۰.۹۹۳۸. Reusability experiments demonstrated the nanocomposite's stability,retaining over ۵۰% efficiency after five cycles. These findings establish TiO₂/GO nanocomposites as apromising material for the sustainable and efficient treatment of dye-contaminated wastewater.

کلیدواژه ها:

Photocatalyst ، TiO۲ ، GO ، Water Treatment ، Dye degradation