Study of Re(I) Carbene Complexes for Photocatalytic Reduction of Carbon Dioxide

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

6 Scopus Citations
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Author(s)

  • Chi-On Ng
  • Ka-Ming Tong
  • Shun-Cheung Cheng
  • Lok-Lam Chan

Detail(s)

Original languageEnglish
Pages (from-to)19170-19177
Journal / PublicationEnergy and Fuels
Volume35
Issue number23
Online published28 Sept 2021
Publication statusPublished - 2 Dec 2021

Abstract

A series of carbene-containing dicarbonyl Re(I) bipyridyl complexes with metal-to-ligand charge transfer (MLCT) transitions in the visible region have been synthesized. Most of these complexes are highly selective and efficient photocatalysts capable of using visible light for CO2 reduction to CO. The activities of single-and two-component photocatalytic systems based on a series of carbene-containing dicarbonyl Re(I) bipyridyl complexes as photocatalysts and photosensitizers have been investigated. Importantly, the CO yields and turnover numbers (TONs) can be further enhanced significantly in the two-component photocatalytic systems. A detailed study suggests that the deactivations of these photocatalyses arise from the photodegradation of the photosensitizers or photocatalysts. The results suggest that efficient and robust rhenium-based two-component photocatalytic systems can be developed by combining an active rhenium(I) catalyst, which does not strongly absorb the excitation light, for activating CO2 together with a highly photostable photosensitizer with strong absorptivity for harvesting excitation light.

Citation Format(s)

Study of Re(I) Carbene Complexes for Photocatalytic Reduction of Carbon Dioxide. / Feng, Yongyi; Ng, Chi-On; Tong, Ka-Ming et al.
In: Energy and Fuels, Vol. 35, No. 23, 02.12.2021, p. 19170-19177.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review