New type of photocatalyst containing copper oxide hydrate crystalline phase and additional amount of copper sulfate 2+ hydroxide was prepared by thermal decomposition of copper sulfate. The EPR detected presence of Cu ions. Photocatalytic degradation of two different model pollutants Reactive Black 5 (RB5) and Malachite Green (MG) in aqueous solution under UV illumination was investigated. The copper oxide containing catalyst showed four times higher photocatalytic activty with respect to RB5 than that to MG dye.
The catalyst exhibited much higher adsorption capacity to RB5 than to MG dye. The degree of degradation of MG dye is 18%, rate constant is 1.7х10 -3 min-1 while the degree of degradation of RB5 dye is 90%, rate constant is 8х10-3 min-1 after 2 hours of illumination.