Earth-Abundant and Durable Nanoporous Catalyst for Exhaust-Gas Conversion

Takeshi Fujita, Hideki Abe, Toyokazu Tanabe, Yoshikazu Ito, Tomoharu Tokunaga, Shigeo Arai, Yuta Yamamoto, Akihiko Hirata, Mingwei Chen

研究成果: Article

11 引用 (Scopus)

抜粋

Precious metals (Pt and Pd) and rare earth elements (Ce in the form of CeO2) are typical materials for heterogeneous exhaust-gas catalysts in automotive systems. However, their limited resources and high market-driven prices are principal issues in realizing the path toward a more sustainable society. In this regard, herein, a nanoporous NiCuMnO catalyst, which is both abundant and durable, is synthesized by one-step free dealloying. The catalyst thus developed exhibits catalytic activity and durability for NO reduction and CO oxidation. Microstructure characterization indicates a distinct structural feature: catalytically active Cu/CuO regions are tangled with a stable nanoporous NiMnO network after activation. The results obtained by in situ transmission electron microscopy during NO reduction clearly capture the unique reaction-induced self-transformation of the nanostructure. This finding can possibly pave the way for the design of new catalysts for the conversion of exhaust gas based on the element strategy.

元の言語English
ページ(範囲)1609-1616
ページ数8
ジャーナルAdvanced Functional Materials
26
発行部数10
DOI
出版物ステータスPublished - 2016 3 8
外部発表Yes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Condensed Matter Physics
  • Electrochemistry

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  • これを引用

    Fujita, T., Abe, H., Tanabe, T., Ito, Y., Tokunaga, T., Arai, S., Yamamoto, Y., Hirata, A., & Chen, M. (2016). Earth-Abundant and Durable Nanoporous Catalyst for Exhaust-Gas Conversion. Advanced Functional Materials, 26(10), 1609-1616. https://doi.org/10.1002/adfm.201504811