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An ethynyl-linked Fe/Co heterometallic phthalocyanine conjugated polymer for the oxygen reduction reaction

  • Wenping Liu
  • , Yuxia Hou
  • , Houhe Pan
  • , Wenbo Liu
  • , Dongdong Qi
  • , Kang Wang
  • , Jianzhuang Jiang
  • , Xiangdong Yao
  • University of Science and Technology Beijing
  • Henan Institute of Science and Technology
  • Griffith University Queensland

Research output: Contribution to journalArticlepeer-review

92 Scopus citations

Abstract

The Sonogashira-Hagihara coupling reaction is utilized to fabricate ethynyl-linked phthalocyanine (Pc) 2D conjugated polymers (CPs), affording the unprecedented heterometallic compound Fe0.5Co0.5Pc-CP and homometallic analogues MPc-CPs (M = Fe, Co) for comparison. It is confirmed that Fe and Co ions are well-defined/distributed with one metal ion encircled by four neighboring ions of the second metal in close proximity in the heterometallic conjugated polymer. Compared to the homometallic analogues, the bimetallic polymer Fe0.5Co0.5Pc-CP is more highly efficient for the oxygen reduction reaction (ORR), indicating that the interaction of Fe and Co ions may provide a synergistic effect on the activity. Fe0.5Co0.5Pc-CP exhibits similar ORR catalytic activity and superior stability compared to commercial Pt/C in alkaline media. Density functional theory calculations reveal that a fast 2 × 2e- synergistic catalytic reaction pathway is essential for the excellent ORR in Fe0.5Co0.5Pc-CP.

Original languageEnglish
Pages (from-to)8349-8357
Number of pages9
JournalJournal of Materials Chemistry A
Volume6
Issue number18
DOIs
StatePublished - 2018

UN SDGs

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

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

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