Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 1609-1616 |
| Number of pages | 8 |
| Journal | Advanced Functional Materials |
| Volume | 26 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 2016 Mar 8 |
| Externally published | Yes |
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Keywords
- CO oxidation
- environmental transmission electron microscopy
- heterogeneous catalyst
- nanoporous metal
- NO reduction
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Biomaterials
- Condensed Matter Physics
- Electrochemistry
Cite this
Earth-Abundant and Durable Nanoporous Catalyst for Exhaust-Gas Conversion. / Fujita, Takeshi; Abe, Hideki; Tanabe, Toyokazu; Ito, Yoshikazu; Tokunaga, Tomoharu; Arai, Shigeo; Yamamoto, Yuta; Hirata, Akihiko; Chen, Mingwei.
In: Advanced Functional Materials, Vol. 26, No. 10, 08.03.2016, p. 1609-1616.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Earth-Abundant and Durable Nanoporous Catalyst for Exhaust-Gas Conversion
AU - Fujita, Takeshi
AU - Abe, Hideki
AU - Tanabe, Toyokazu
AU - Ito, Yoshikazu
AU - Tokunaga, Tomoharu
AU - Arai, Shigeo
AU - Yamamoto, Yuta
AU - Hirata, Akihiko
AU - Chen, Mingwei
PY - 2016/3/8
Y1 - 2016/3/8
N2 - 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.
AB - 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.
KW - CO oxidation
KW - environmental transmission electron microscopy
KW - heterogeneous catalyst
KW - nanoporous metal
KW - NO reduction
UR - http://www.scopus.com/inward/record.url?scp=84983110841&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84983110841&partnerID=8YFLogxK
U2 - 10.1002/adfm.201504811
DO - 10.1002/adfm.201504811
M3 - Article
AN - SCOPUS:84983110841
VL - 26
SP - 1609
EP - 1616
JO - Advanced Materials for Optics and Electronics
JF - Advanced Materials for Optics and Electronics
SN - 1057-9257
IS - 10
ER -