| 학회 |
한국고분자학회 |
| 학술대회 |
2021년 가을 (10/20 ~ 10/22, 경주컨벤션센터) |
| 권호 |
46권 2호 |
| 발표분야 |
분자전자 부문위원회 Ⅰ,Ⅱ |
| 제목 |
Photocatalytic CO2-to-formate/CO Conversion with Half-Metallocene p-Cymene Ruthenium(II) Catalyst |
| 초록 |
This study details the photocatalytic CO2-to-CO or formate conversion activities of two different photocatalytic systems (IrPE + (p-Cym)RuPE and IrP/TiO2/(p-Cym)RuP) to evaluate the catalytic behavior of homogeneous and heterogenized (p-Cym)Ru(II) catalyst, respectively. A single run photolysis of the mixed homogeneous system (IrPE + (p-Cym)RuPE) in the presence of 16.7 vol % TEOA exhibited a maximal turnover number (TON) of ~800 for 48 h with a product selectivity of formate (＞79%), while the ternary hybrid system with TiO2-immobilized (p-Cym)RuP showed the relatively higher and steady CO2-to-CO and CO2-to-formate conversion activities (a TON of ＞1660 for 100 h). The mechanistic investigations along with photophysical and electrochemical studies suggests that the occurrence of MLCT ((p-Cym)RuI(bpy)]+ → [(p-Cym)RuII(bpy•–)]+) onto the electron-withdrawing n-type TiO2 opens catalytic route toward (p-Cym)RuII-COOH intermediate that results in CO2-to-CO conversion. |
| 저자 |
이대한, 서윤정, 최민수, 김철훈, 강상욱, 손호진
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| 소속 |
고려대 |
| 키워드 |
(p-Cym)Ru(II) catalyst; Photochemical CO2-to-Formate conversion
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| E-Mail |
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