A molecular noble metal-free system for efficient visible light-driven reduction of CO2 to CO

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

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Author(s)

  • Lingjing Chen
  • Yanfei Qin
  • Gui Chen
  • Mingya Li
  • Lirong Cai
  • Yongfu Qiu
  • Hongbo Fan
  • Marc Robert

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)9596-9602
Journal / PublicationDalton Transactions
Volume48
Issue number26
Online published9 Feb 2019
Publication statusPublished - 14 Jul 2019

Abstract

A new pentadentate quinoline-pyridine ligand and its iron (1), cobalt (2) and nickel (3) complexes have been synthesized and characterized. The iron complex exhibits excellent photocatalytic activity towards CO2-to-CO conversion with a TON(CO) of 544 and a selectivity of 99.3% using the commercially available organic dye purpurin as the photosensitiser and BIH as the electron donor. In contrast, the cobalt and nickel complexes result in very low activity for CO production with a TON of only 8 and 15, respectively. On the other hand, all the three complexes show good electrocatalytic activity for CO2 reduction when using 2,2,2-trifluoroethanol as the proton source with the active intermediate of M0 species. The lack of activity in photocatalytic CO2 reduction by 2 and 3 can be attributed to the redox potential of MI/M0 which is significantly more negative than that of PP-/PP2- while in the case of 1 the FeI/Fe0 redox potential becomes more positive than that of the PP-/PP2- couple.

Citation Format(s)

A molecular noble metal-free system for efficient visible light-driven reduction of CO2 to CO. / Chen, Lingjing; Qin, Yanfei; Chen, Gui; Li, Mingya; Cai, Lirong; Qiu, Yongfu; Fan, Hongbo; Robert, Marc; Lau, Tai-Chu.

In: Dalton Transactions, Vol. 48, No. 26, 14.07.2019, p. 9596-9602.

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