In this project coupled ZnO – Co2O3 powders was prepared using direct mixing of ZnO and Co2O3 and
calcination at 500C, then studied the ability of prepared coupled semiconductor to degraded some pollutants such as
crystal violet dye .The coupled ZnO – Co2O3 were prepared by mixing one gram of zinc oxide with one gram of
cobalt oxide and calcing in furnace (500 ?C) for three hours. .The coupled characterized were investigated by using
FTIR, XRD, and UV-visible techniques. The photo activity of coupled was testing using crystal violet dye.
The synthesized coupled semiconductor powder photo activity were studied, which is achieved by the
irradiation of suspended solution consists of different concentration of crystal violate dye with 0.14gm of mixed
metal oxide (ZnO – Co2O3) by mercury lamp (125 W) from external source inside a pyrex photoreaction cell of 100
ml at 298 K, with flow rate of babul of air 10 ml/min. In this paper different experiments were studied such as: the
effect of crystal violate dye concentration, the effect of loaded mass of coupled ZnO – Co2O3 semiconductors, and
the effect of temperature.