Electronic Tuning of Cobalt Porphyrins Immobilized on Nitrogen-Doped Graphene for CO2 Reduction

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

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Author(s)

  • Minghui Zhu
  • Chenxi Cao
  • Jiacheng Chen
  • Yang Sun
  • Jing Xu
  • Yi-Fan Han

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)2435−2440
Number of pages6
Journal / PublicationACS Applied Energy Materials
Volume2
Issue number4
Early online date14 Mar 2019
Publication statusPublished - 22 Apr 2019

Abstract

Electroreduction of CO2 into CO can be catalyzed by cobalt porphyrins, and the performance can be improved by peripheral functionalization or heterogenization. Herein, we report a facile approach to electronically tune the metal center. Through the introduction of nitrogen atoms onto the graphene support, the activity of cobalt porphyrin/graphene composite can be increased by a factor of 2. Density functional theory calculations and X-ray photoelectron spectroscopy analysis revealed that nitrogen atoms embedded in graphene increase the electron density of cobalt atoms and boost its activity for CO2 electroreduction. Such a methodology has the potential to be extended to other catalytic systems involving molecular catalysts.

Research Area(s)

  • carbon dioxide, electroreduction, graphene, nitrogen doping, cobalt porphyrin

Citation Format(s)

Electronic Tuning of Cobalt Porphyrins Immobilized on Nitrogen-Doped Graphene for CO2 Reduction. / Zhu, Minghui; Cao, Chenxi; Chen, Jiacheng; Sun, Yang; Ye, Ruquan; Xu, Jing; Han, Yi-Fan.

In: ACS Applied Energy Materials, Vol. 2, No. 4, 22.04.2019, p. 2435−2440.

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