Anchored Cu(II) tetra(4-carboxylphenyl)porphyrin to P25 (TiO2) for efficient photocatalytic ability in CO2 reduction

By Lei Wang, S. Duan, Peng Jin, H. She, Jingwei Huang, Z. Lei, Tierui Zhang, Qizhao Wang. Applied Catalysis B: Environmental, 2018

195 citations recorded by the source corpus.

Abstract The exploration of photocatalysts used in converting CO2 into applicable organic products is of significant importance for addressing the universal problems of both global warming and energy shortage. In this work, the sensitizer Cu(II) tetra(4-carboxylphenyl)porphyrin (CuTCPP) was successfully combined with hydroxylated commercial P25 (TiO2) by hydrothermal treatment (denoted as P25m). The as-prepared composite CuTCPP/P25m shows photocatalytic activity for CO2 reduction to give methane under UV-vis irradiation. The characterizations entailed in our work not only confirm the effective combination of the composite, but exhibit a stronger light absorption capability than P25m. During the photocatalytic evaluation, the photocatalytic system employing 0.5% CuTCPP/P25m (CuTCPP account for 0.5% in the total amount) engendered approximately 46 times higher methane than generated by P25m alone. This impressive amelioration can be attributed to a strengthened capability of CuTCPP/P25m in light absorption and enhanced separation efficiency of photo-induce electrons and holes.

Subfields: Materials Chemistry, Renewable Energy, Sustainability and the Environment

View Paper: https://www.semanticscholar.org/paper/7ac7e1d7af168af36441285d574417ca9f2040fb