One-pot solvothermal preparation of mesoporous Cu(II)Porphyrin-TiO₂ composites with enhanced photocatalytic activity and stability

Two mesoporous Cu(II)porphyrin-TiO₂ composites were prepared firstly by a one-pot solvothermal method and characterized by SEM, X-ray diffraction, UV–Visible diffuse fluorescence spectra, and N₂ adsorption isotherms. Characterization results indicate that Cu(II)porphyrin firmly linked with TiO₂, which efficiently prohibit the aggregation of TiO₂ and form mesoporous structure. Photocatalytic activity test shows that catalytic efficiency of prepared photocatalysts is much higher than TiO₂, and after six cycles catalytic efficiency is still around 90%. The results indicate that the two mesoporous Cu(II)porphyrin-TiO₂ composites are highly efficient photocatalyst with outstanding catalytic stability.