Abstract Photo catalytic degradation of pollutants is one of the techniques used for treatment of dye contaminated wastewater. TiO2 has attracted much attention as photo catalyst for treatment of contaminated water. In this study, the photo catalytic performance of TiO2 has been enhanced by formation of p–n Co3O4-TiO2 hetero-junction. The p–n Co3O4-TiO2 hetero-junction was prepared by wet incipient impregnation method and characterized by various techniques. The photo catalytic activity of prepared composite was evaluated by photo degradation of methyl orange. The as prepared Co3O4-TiO2 composite was found as effective catalyst than Co3O4 and TiO2. The higher photo catalytic activity was attributed to p–n junction formed between Co3O4 and TiO2. The degradation data was analyzed according to Eley–Rideal mechanism in terms of 1st and 2nd order kinetics.

中文翻译：

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以 p-n Co3O4-TiO2 异质结为催化剂增强光催化降解甲基橙

摘要 污染物光催化降解是染料污染废水处理技术之一。TiO2 作为光催化剂用于处理污染水已引起广泛关注。在这项研究中，TiO2 的光催化性能通过形成 p-n Co3O4-TiO2 异质结得到了增强。p-n Co3O4-TiO2 异质结是通过湿式初始浸渍法制备的，并通过各种技术进行表征。通过光降解甲基橙来评价所制备复合材料的光催化活性。发现所制备的 Co3O4-TiO2 复合材料是比 Co3O4 和 TiO2 更有效的催化剂。较高的光催化活性归因于 Co3O4 和 TiO2 之间形成的 p-n 结。