Hybridization of Molecular and Graphene Materials for CO2 Photocatalytic Reduction with Selectivity Control

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

2 Scopus Citations
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Author(s)

  • Bing Ma
  • Matías Blanco
  • Laura Calvillo
  • Lingjing Chen
  • Gui Chen
  • Goran Dražić
  • Julien Bonin
  • Marc Robert
  • Gaetano Granozzi

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)8414
Number of pages8425
Journal / PublicationJournal of the American Chemical Society
Volume143
Issue number22
Online published25 May 2021
Publication statusPublished - 9 Jun 2021

Abstract

In the quest for designing efficient and stable photocatalytic materials for CO2 reduction, hybridizing a selective noble-metal-free molecular catalyst and carbon-based light-absorbing materials has recently emerged as a fruitful approach. In this work, we report about Co quaterpyridine complexes covalently linked to graphene surfaces functionalized by carboxylic acid groups. The nanostructured materials were characterized by X-ray photoemission spectroscopy, X-ray absorption spectroscopy, IR and Raman spectroscopies, high-resolution transmission electron microscopy and proved to be highly active in the visible-light-driven CO2 catalytic conversion in acetonitrile solutions. Exceptional stabilities (over 200 h of irradiation) were obtained without compromising the selective conversion of CO2 to products (>97%). Most importantly, complete selectivity control could be obtained upon adjusting the experimental conditions: production of CO as the only product was achieved when using a weak acid (phenol or trifluoroethanol) as a co-substrate, while formate was exclusively obtained in solutions of mixed acetonitrile and triethanolamine.

Citation Format(s)

Hybridization of Molecular and Graphene Materials for CO2 Photocatalytic Reduction with Selectivity Control. / Ma, Bing; Blanco, Matías; Calvillo, Laura; Chen, Lingjing; Chen, Gui; Lau, Tai-Chu; Dražić, Goran; Bonin, Julien; Robert, Marc; Granozzi, Gaetano.

In: Journal of the American Chemical Society, Vol. 143, No. 22, 09.06.2021, p. 8414.

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