本发明提供了一种高催化活性的铜（Ⅱ）四羧基苯基卟啉/二氧化钛复合材料，是通过水热处理修饰的二氧化钛（P25m）与CuTCPP在乙醇中回流，制得二氧化钛的质量百分含量为0.1~2.0%的复合材料CuTCPP/P25m，该复合材料中CuTCPP通过敏化P25m，有效提高了P25m的光响应能力，具有较宽的光吸收范围和较高的电荷分离效率，用于光催化CO2还原反应中具有较高的光催化活性。相比于P25m还原CO2产CH4和CO，CuTCPP/P25m催化活性明显提高，其产率分别为19.39 CH4 μmol/g/h、2.68 CO μmol/g/h，具有优异的CO2还原性能。
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