Abstract
The performance of a water-soluble cobalt porphyrin ([{meso-tetra(4-sulfonatophenyl)porphyrinato}cobalt(III)], CoTPPS) as a catalyst for the photoreduction of CO2 in fully aqueous media has been investigated under visible light irradiation using [Ru(bpy)3]2+ as a photosensitizer and ascorbate as a sacrificial electron donor. CO is selectively produced (>82%) with high efficiency (926 TONCO; TONCO = turnover number for CO). Upon optimization, selectivities of at least 91% are achieved. Efficiencies up to 4000 TONCO and 2400 h-1 TOFCO (TOFCO = turnover frequency for CO) are reached at low catalyst loadings, albeit with loss in selectivity. This work successfully demonstrates the ability of CoTPPS to perform highly efficient photoreduction of CO2 in water while retaining its high selectivity for CO formation.
| Original language | English |
|---|---|
| Pages (from-to) | 4867-4874 |
| Number of pages | 8 |
| Journal | ACS Catalysis |
| Volume | 9 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Jun 7 2019 |
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All Science Journal Classification (ASJC) codes
- Catalysis
- Chemistry(all)
Cite this
Highly Efficient and Selective Photocatalytic CO2 Reduction to CO in Water by a Cobalt Porphyrin Molecular Catalyst. / Call, Arnau; Cibian, Mihaela; Yamamoto, Keiya; Nakazono, Takashi; Yamauchi, Kosei; Sakai, Ken.
In: ACS Catalysis, Vol. 9, No. 6, 07.06.2019, p. 4867-4874.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Highly Efficient and Selective Photocatalytic CO2 Reduction to CO in Water by a Cobalt Porphyrin Molecular Catalyst
AU - Call, Arnau
AU - Cibian, Mihaela
AU - Yamamoto, Keiya
AU - Nakazono, Takashi
AU - Yamauchi, Kosei
AU - Sakai, Ken
PY - 2019/6/7
Y1 - 2019/6/7
N2 - The performance of a water-soluble cobalt porphyrin ([{meso-tetra(4-sulfonatophenyl)porphyrinato}cobalt(III)], CoTPPS) as a catalyst for the photoreduction of CO2 in fully aqueous media has been investigated under visible light irradiation using [Ru(bpy)3]2+ as a photosensitizer and ascorbate as a sacrificial electron donor. CO is selectively produced (>82%) with high efficiency (926 TONCO; TONCO = turnover number for CO). Upon optimization, selectivities of at least 91% are achieved. Efficiencies up to 4000 TONCO and 2400 h-1 TOFCO (TOFCO = turnover frequency for CO) are reached at low catalyst loadings, albeit with loss in selectivity. This work successfully demonstrates the ability of CoTPPS to perform highly efficient photoreduction of CO2 in water while retaining its high selectivity for CO formation.
AB - The performance of a water-soluble cobalt porphyrin ([{meso-tetra(4-sulfonatophenyl)porphyrinato}cobalt(III)], CoTPPS) as a catalyst for the photoreduction of CO2 in fully aqueous media has been investigated under visible light irradiation using [Ru(bpy)3]2+ as a photosensitizer and ascorbate as a sacrificial electron donor. CO is selectively produced (>82%) with high efficiency (926 TONCO; TONCO = turnover number for CO). Upon optimization, selectivities of at least 91% are achieved. Efficiencies up to 4000 TONCO and 2400 h-1 TOFCO (TOFCO = turnover frequency for CO) are reached at low catalyst loadings, albeit with loss in selectivity. This work successfully demonstrates the ability of CoTPPS to perform highly efficient photoreduction of CO2 in water while retaining its high selectivity for CO formation.
UR - http://www.scopus.com/inward/record.url?scp=85065825494&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85065825494&partnerID=8YFLogxK
U2 - 10.1021/acscatal.8b04975
DO - 10.1021/acscatal.8b04975
M3 - Article
AN - SCOPUS:85065825494
VL - 9
SP - 4867
EP - 4874
JO - ACS Catalysis
JF - ACS Catalysis
SN - 2155-5435
IS - 6
ER -