@article{a4240d3c320c4cb4a8f5892087f6b496,
title = "Photochemical CO2 Reduction Driven by Water-Soluble Copper(I) Photosensitizer with the Catalysis Accelerated by Multi-Electron Chargeable Cobalt Porphyrin",
abstract = "Without using precious elements, a highly efficient and selective molecular-based photocatalytic system for CO2-to-CO conversion in fully aqueous media has been developed. Our copper(I)-based water-soluble photosensitizer (CuPS) preserves its highly luminescent and long-lived excited state even in aqueous media. The CuPS-driven CO2 reduction catalyzed by a water-soluble cobalt porphyrin possessing four N-methylpyridinium acceptors at the meso positions (CoTMPyP) achieves the highest catalytic activity among those reported for aqueous systems: TONCO = 2680 and TOFCO max = 1600-2600 h-1 with SelCO2 = 77-90% (selectivity for CO vs H2). The observed photocatalytic enhancement is discussed in terms of the 6-electron chargeable character of CoTMPyP, permitting its rapid release of CO via reduction of CoII to CoI by intramolecular electron transfer from the reducing equivalent stored at one of the acceptors.",
author = "Xian Zhang and Mihaela Cibian and Arnau Call and Kosei Yamauchi and Ken Sakai",
note = "Funding Information: This work was supported by JSPS KAKENHI Grant Nos. JP18H01996 and JP18H05171. This work was also supported by the International Institute for Carbon Neutral Energy Research (WPI-I2CNER), sponsored by the World Premier International Research Center Initiative (WPI) MEXT, Japan. M.C. thanks le Fonds de recherche du Qu{\'e}bec – Nature et technologies (FRQNT) for a PD scholarship. Z.X. thanks the China Scholarship Council (201706650009). Funding Information: This work was supported by JSPS KAKENHI Grant Nos. JP18H01996 and JP18H05171. This work was also supported by the International Institute for Carbon Neutral Energy Research (WPI-I2CNER), sponsored by the World Premier International Research Center Initiative (WPI), MEXT, Japan. M.C. thanks le Fonds de recherche du Qu{\'e}bec – Nature et technologies (FRQNT) for a PD scholarship. Z.X. thanks the China Scholarship Council (201706650009). Publisher Copyright: Copyright {\textcopyright} 2019 American Chemical Society.",
year = "2019",
month = dec,
day = "6",
doi = "10.1021/acscatal.9b04023",
language = "English",
volume = "9",
pages = "11263--11273",
journal = "ACS Catalysis",
issn = "2155-5435",
publisher = "American Chemical Society",
number = "12",
}