Highly efficient and selective visible-light driven CO2-to-CO conversion by a Co-based cryptate in H2O-CH3CN solution

Abstract

Summary

A photochemical reduction of CO₂ to CO was shown using the copper cryptates 100956 or 100957 as catalyst in combination with the ruthenium photosensitizer . Turnover numbers (TONs) up to 51392 and a selectivity of 98% for CO were reached in MeCN/H₂O. The experiments were conducted under visible-light irradiation (λ = 450 nm) using TEOA as sacrificial electron donor (see section SEDs below).

Content of the published article in detail

The article contains results for the reduction of CO₂ to CO under visible-light catalysis using a copper complex as a catalyst. The catalytic system performs best (referring to the TON of CO production) in MeCN/H₂O with complex xx.

Catalyst

100956 100957

Photosensitizer

[Ru(phen)3][PF6]2

Sacrificial electron donor

In this study, the experiments were done with the sacrificial electron donor TEOA.

Additives

In this study, no additives were tested.