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

ABSTRACT

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.

KEYWORDS:

• Mesoporous TiO₂
• Cu(II)Porphyrin
• Cu(II)Porphyrin-TiO₂ composite
• photocatalytic activity
• photodegradation

Funding

This work was supported by the National Natural Science Foundation of China (No. 21301140); the Natural Science Foundation of ShaanXi Province, China (No. 2015JM6274); and the National Undergraduate Innovative Test Program (No. 201410697028).