| 학회 |
한국공업화학회 |
| 학술대회 |
2021년 봄 (05/12 ~ 05/14, 부산 벡스코(BEXCO)) |
| 권호 |
25권 1호 |
| 발표분야 |
포스터-환경·에너지 |
| 제목 |
Hetero-Collisional Electron Injection Process from Solution Phase Porphyrin Dye to Catalytic TiO2/Re(I) Particles |
| 초록 |
We report a collisional electron-injection process in the semi-hetero hybrid photocatalytic system consisting of non-anchored porphyrins and TiO2/Re(I) nanoparticles. The net hetero-collisional electron transfer from the non-anchored fluorescent porphyrin sensitizer to the TiO2 catalytic particles was a major event during the initial stage of the catalysis. According to in situ UV‒vis absorption spectroscopy and mass analysis of dye solution filtered after photolysis, the initially added porphyrin dye is found to experience a photomodification accompanied by a breakage of π‒conjugation and loss of the bulky substituents. With the structural identification of deformed porphyrin species, two acetyl- or ethyl-group modified porphyrins were prepared, respectively referred to as ZnPAcet and ZnPEt, and this modification elevated the corresponding excited-state energy levels when comparing ZnP with ZnPEt, consequently shortening the activity delay at the early stage of photolysis. |
| 저자 |
서윤정, 이대한, 이상훈, 최성한, 김소연, 신재윤, 김철훈, 강상욱, 손호진
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| 소속 |
고려대 |
| 키워드 |
porphyrin; TiO2; CO2 reduction
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| E-Mail |
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