| 학회 |
한국고분자학회 |
| 학술대회 |
2020년 가을 (10/05 ~ 10/08, 부산컨벤션센터(BEXCO)) |
| 권호 |
45권 1호 |
| 발표분야 |
분자전자 부문위원회 I |
| 제목 |
Highly Efficient Porphyrin-Driven CO2 Reduction via Hetero-Collisional Electron Transfer Route between Homogeneous Porphyrin and TiO2 Semiconductor |
| 초록 |
A zinc porphyrin complex (ZnP) was applied as visible-light photosensitizer in solution to the selective CO2 reduction to CO in the presence of an electron donor (BIH) and a hybrid catalyst (TiO2/ReC) prepared by anchoring of Re(4,4′-Y2-bpy)(CO)3Cl (Y = CH2PO(OH)2) on TiO2 particles. LED irradiation in N,N-dimethylformamide (DMF) at ＞500 nm resulted in the successful reduction of CO2 to CO. The systems efficiently proceeded CO2 to CO conversion during photocatalysis. Under lower energy irradiation (＞500 nm) with added 3 vol% water in DMF solvent, the ZnP hybrid showed a TONRe of ~2000 over an extended time-period of 50 h. It was found via in-situ UV-Vis absorption spectroscopy that the added porphyrin photosensitizers experience a significant photomodification during photolysis. Detailed in-situ mass analysis of supernatant after photocatalysis revealed that the original structure of porphyrin derivatives was significantly modified. |
| 저자 |
이대한, 최민수, 나수원, 최성한, 김철훈, 강상욱, 손호진
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| 소속 |
고려대 |
| 키워드 |
Porphyrin; CO2 reduction; TiO2
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| E-Mail |
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