NOVEL TIO2 COUPLED BI2O4 NANOCOMPOSITES FOR EFFECTIVE REMOVAL OF AQUEOUS ROSE BENGAL DYE UNDER UV-A LIGHT ILLUMINATIONS. Vimala, A. Sivarajan, T. Rajachandrasekar and K. VeeravelanAbstract Novel hetero structured TiO2/Bi2O4 nanocomposite was successfully synthesized by hydrothermal and sol-gel method. High-resolution transmission electron microscope (HR-TEM) analysis clearly indicates the particles with spherical and hexagonal structure and sizes of most of the particles are below 50 nm. The photocatalytic performance of Rose Bengal (RB) dye was studied. The photocatalysts showed high degradation rate and complete mineralization ability for Rose Bengal under UV-A light. The effect of operational parameters such as effect of pH, Catalyst suspension, Initial dye concentration and reusability were observed. Hence the catalyst can be reused for continuous treatment of waste water. |