Article Thermally polymerizable phthalocyanine realizes a metal–nitrogen-doped carbon material featuring a defined single-atom catalyst motif with CO2RR activity

Yuki Sano ; Daichi Nakajima ; Biplab Manna SAMURAI ORCID ; Koki Chida ORCID ; Ryojun Toyoda ORCID ; Shinya Takaishi ORCID ; Kazuyuki Iwase ORCID ; Koji Harano SAMURAI ORCID ; Yuta Nishina ORCID ; Takeharu Yoshii ORCID ; Ryota Sakamoto ORCID

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Yuki Sano, Daichi Nakajima, Biplab Manna, Koki Chida, Ryojun Toyoda, Shinya Takaishi, Kazuyuki Iwase, Koji Harano, Yuta Nishina, Takeharu Yoshii, Ryota Sakamoto. Thermally polymerizable phthalocyanine realizes a metal–nitrogen-doped carbon material featuring a defined single-atom catalyst motif with CO2RR activity. Journal of Materials Chemistry A. 2025, 13 (35), . https://doi.org/10.1039/d5ta02720a

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(abstract)

Metal–nitrogen-doped carbon materials (MNCs) exhibit good electrocatalytic performance owing to the intrinsic advantages of carbon-based materials and the presence of isolated and stabilized metal atoms coordinated by nitrogen sites. However, conventional high-temperature pyrolysis of precursor molecules make it difficult to control the coordination structure precisely. To address this issue, here we report a new synthesis strategy for MNCs. Specifically, we design and synthesize Ni-phthalocyanine functionalized with ethynyl groups as solid-state thermal polymerization points. After depositing the Ni-phthalocyanine precursor on a carbon support and performing a thermal treatment, the resultant carbon composite material features a Ni–N₄ coordination structure derived from the precursor, and enhanced porosity. This material demonstrates high catalytic activity for the CO₂ reduction reaction (CO₂RR). Our synthetic approach is applicable to various precursor molecules and carbon supports, paving the way for the further development of MNC-based electrode catalysts.

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Keyword: phthalocyanine, catalyst, CO2 reduction, transmission electron microscopy

Date published: 2025-08-26

Publisher: Royal Society of Chemistry (RSC)

Journal:

  • Journal of Materials Chemistry A (ISSN: 20507488) vol. 13 issue. 35

Funding:

  • Precursory Research for Embryonic Science and Technology JPMJPR22Q5
  • Precursory Research for Embryonic Science and Technology JPMJPR2371
  • Precursory Research for Embryonic Science and Technology JPMJPR23QA
  • Japan Society for the Promotion of Science JP23H04874
  • Japan Society for the Promotion of Science JP24H01690
  • Tohoku University
  • Japan Society for the Promotion of Science JP24K01494
  • Japan Society for the Promotion of Science JP25H01644
  • Japan Society for the Promotion of Science JP25H01999
  • Core Research for Evolutional Science and Technology JPMJCR24S6
  • Fusion Oriented REsearch for disruptive Science and Technology JPMJFR203F
  • Asahi Glass Foundation

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.1039/d5ta02720a

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Updated at: 2025-09-10 16:30:30 +0900

Published on MDR: 2025-09-10 16:19:35 +0900

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