Titanium Dioxide (TiO2) Modified Bentonite for Photodegradation in Methylene Blue Dye

Dye is one of the waste waters, which will be a problem if content excessive in water. Modifying bentonite with titanium dioxide (TiO2) as photocatalyst for removal dye waste. In this study, composite synthesis was carried out by mixing and TiO2 suspensions. The mass 20 g, variations are 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 100%. resulting heated using furnace at 550°C 5 hours. Bentonite-TiO2 composites were characterized Fourier Transform Infrared, X-Ray Diffraction, Scanning Electron Microscope-Energy Dispersive (SEM-EDX). Photodegradation methylene blue bentonite-TiO2 varying photocatalysts (0.02, 0.04, 0.06, 0.08 g); pH (1, 3, 5, 7, 9), UV irradiation time (30, 60, 90, 120 minutes). results characterization FTIR showed presence Ti-O-Ti vibrations wavenumber 1419 cm-1 Si-O-Ti wave numbers 780 799 cm-1. Characterization 20% XRD rutile, anatase, montmorillonite phases. SEM-EDX produced some small particles layered structure clumping still form agglomerates, EDX chemical composition Si Ti. photodegradation that best activity occurred BT-20% 1, minutes 99.942% degraded.