Chemical degradation of remazol dye by using Tb-doped TiO2 catalyst and Photo-Fenton’s process under UV light
Barkha Sharma, Chandra Mohan, Rakesh Kumar, Rajender S. Varma
Abstract
This study investigated the removal of Remazol Red dye from synthetic wastewater using two advanced treatment. TiO₂-based photo catalysis and the Photo-Fenton process. In the photo catalytic method, titanium dioxide (TiO₂) was used as the main catalyst. Under optimal conditions, TiO₂ achieved around 95% dye degradation after 11 h of exposure. To improve efficiency, terbium (Tb)-doped TiO₂ nanoparticles were synthesized using the co-precipitation method. The TiO₂ doped with 1% terbium showed the highest photo catalytic performance, nearly achieving complete dye removal. Characterization techniques such as XRD, FTIR, SEM with EDX confirmed that the anatase phase of TiO₂ was maintained In the Photo-Fenton process, a combination of hydrogen peroxide (H₂O₂) and iron (Fe²⁺) was used as the catalyst. Complete dye degradation was achieved. Both methods proved highly effective in dye degradation.