| 초록 |
Efficient and selective photoreduction of CO2 to deeply reduced products such as hydrocarbons is a big challenge. We use the porphyrin as sensitizer to enhance the electron charge injection to TiO2. For CO2 reduction system, Butadiyne-linked porphyrin trimers and dimers were synthesized and investigated. Herein we adapted the porphyrin trimer and dimer to binary system (Dye + TiO2/Catalyst). The system comprises [[5,5’'-(1,3-Butyne-1,4-biyl)bis[10,20-bis[2,6-bis[di(n-hexoxy)]phenyl]]-15[(triisopropyl)ethynyl]-porphin-5-yl]-1,3-butadiynyl]-10,20-bis[2,6-bis[di(nhexoxy)]phenyl]-porphinato]trizinc as the sensitizer and (4,4′-bis(methylphosphonic acid)-2,2′-bipyridine)ReI(CO)3Cl as the catalyst, which have been anchored on TiO2 nanoparticle. It was found that remarkable enhancements in the CO2 conversion activity of the hybrid photocatalytic system can be achieved by using the porphyrin trimer than monomer. |
