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Highly Efficient Photocatalytic Reduction of CO2 to CO by In Situ Formation of a Hybrid Catalytic System Based on Molecular Iron Quaterpyridine Covalently Linked to Carbon Nitride

  • Yue Wei
  • , Lingjing Chen
  • , Huan Chen
  • , Lirong Cai
  • , Guiping Tan
  • , Yongfu Qiu
  • , Quanjun Xiang
  • , Gui Chen*
  • , Tai-Chu Lau*
  • , Marc Robert*
  • *Corresponding author for this work

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

Abstract

Efficient and selective photocatalytic CO2 reduction was obtained within a hybrid system that is formed in situ via a Schiff base condensation between a molecular iron quaterpyridine complex bearing an aldehyde function and carbon nitride. Irradiation (blue LED) of an CH3CN solution containing 1,3-dimethyl-2-phenyl-2,3-dihydro-1H-benzo[d]imidazole (BIH), triethylamine (TEA), Feqpy-BA (qpy-BA=4-([2,2′:6′,2′′:6′′,2′′′-quaterpyridin]-4-yl)benzaldehyde) and C3N4 resulted in CO evolution with a turnover number of 2554 and 95 % selectivity. This hybrid catalytic system unlocks covalent linkage of molecular catalysts with semiconductor photosensitizers via Schiff base reaction for high-efficiency photocatalytic reduction of CO2, opening a pathway for diverse photocatalysis.
Original languageEnglish
Article numbere202116832
JournalAngewandte Chemie - International Edition
Volume61
Issue number11
Online published5 Jan 2022
DOIs
Publication statusPublished - 7 Mar 2022

Funding

This research was funded by the National Natural Science Foundation of China (21975043), Guangdong Basic and Applied Basic Research Foundation, the NSFC/RGC joint research scheme (N_CityU115/18) and the City University of Hong Kong (9229038). Partial financial support from the Institut Universitaire de France (IUF) is also gratefully acknowledged.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 13 - Climate Action
    SDG 13 Climate Action

Research Keywords

  • Carbon Nitride
  • CO2 Reduction
  • Fe Quaterpyridine
  • Photocatalysis
  • Schiff Base Reaction

RGC Funding Information

  • RGC-funded

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