Photcatalytic degradation of malachite green using coupled TiO2-Co2O3, was
studied, by the irradiation of suspended solution consists of 1ppm of malachite green with
0.12 g /100 ml of coupled TiO2-Co2O3 metal oxide semiconductor. This process used external
source 125Watts mercury lamp. Al photo reaction inside a Pyrex photoreaction cell of 100
ml, with flow rate of air 10ml/ min at room temperature 298 K. Several experiments were
carried out in various conditions to create optimum Photcatalytic degradation of malachite
green. These experiments include effect of mass of coupled TiO2-Co2O3, concentration of
malachite green, and the effect of light intensity. The products was studied by using UV-Vis
spectrophotometer.