Comparison of preparation methods of TiO2/CNTs and sono-photocatalysis of methyl orange and phenol by diverse reactors

In this paper, two kinds of CNT/TiO₂ composites were synthesized by different sol-gel methods. Comparing to the TiO₂/CNTs prepared by method 1 (Tetrabutyl titanate+CNT, H₂O), the catalysts synthesized by method 2 (Tetrabutyl titanate, CNT+H₂O) showed higher photocatalytic activity and the optimum content of CNT was 1%. Furthermore, diverse reactors were introduced to deal with methyl orange and phenol wastewater. Conform reactor was found as the optimum reactor for its direct irradiation and high ultrasonic energy efficiency. Sono-photocatalytic degradation is not only affected by the type of catalyst and reactor, but also can be affected by the species of the contamination.