Iron porphyrin-derived ordered carbonaceous frameworks

Masanori Yamamoto, Kazuma Takahashi, Mao Ohwada, Yuxin Wu, Kazuyuki Iwase, Yuichiro Hayasaka, Hisashi Konaka, Henry Cove, Devis Di Tommaso, Kazuhide Kamiya, Jun Maruyama, Fumito Tani, Hirotomo Nishihara

Research output: Contribution to journalArticle

Abstract

Iron-incorporated ordered carbonaceous frameworks (OCFs) have been synthesized by the pyrolysis of iron porphyrin with ethynyl groups as polymerizable/carbonizable moieties at a temperature higher than 600 °C. The pyrolysis behavior is analyzed by thermogravimetry-differential thermal analysis-mass spectrometry, and the obtained carbon materials are characterized by X-ray diffraction, X-ray absorption fine structure, and high-angle annular dark-field scanning transmission electron microscopy. The introduction of ethynyl groups at the meta positions of the peripheral phenyl groups is essential for efficient cross-linking upon thermal polymerization. The thermally stable polymer thus obtained can be transformed into OCFs with high carbonization yield of 93 % at the subsequent carbonization. OCFs possess periodic structural regularity and porphyrin Fe-N4 coordination structure, and exhibit electrocatalysis for the conversion of CO2 into CO.

Original languageEnglish
JournalCatalysis Today
DOIs
Publication statusAccepted/In press - 2020

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

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    Yamamoto, M., Takahashi, K., Ohwada, M., Wu, Y., Iwase, K., Hayasaka, Y., Konaka, H., Cove, H., Di Tommaso, D., Kamiya, K., Maruyama, J., Tani, F., & Nishihara, H. (Accepted/In press). Iron porphyrin-derived ordered carbonaceous frameworks. Catalysis Today. https://doi.org/10.1016/j.cattod.2020.07.003