Mesoporous Titania-Silica nanocomposite as an effective material for the degradation of Bisphenol A under visible light

A simple and very effective method is proposed for the removal of Bisphenol A (BPA) under visible light using mesoporous TiO₂-SiO₂ nanocomposite. The material was characterized using FTIR, XRD, DRS, XPS, FESEM, HRTEM, and BET techniques. The photo degradation efficiency of TiO₂-SiO₂ compared with bare TiO₂. The effect of calcination temperature on the photo-degradation of the materials is also studied. The radical intermediates formed during the degradation of BPA were followed with different radical scavengers. The solution after reaction is subjected to TOC (Total Organic Carbon content) and LCMS analysis to determine the mineralization rate and degradation products exist in the solution. Kinetic studies were revealed that the degradation process follow pseudo first order kinetics.