Controllable Synthesis of Porous and Hollow Nanostructured Catalyst Particles and Their Soot Oxidation
Langmuir Volume 40 Issue 15
Page 8260-8270
published_at 2024-04-04
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| File | |
| Title ( eng ) |
Controllable Synthesis of Porous and Hollow Nanostructured Catalyst Particles and Their Soot Oxidation
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| Creator |
Kautsar Duhaul Biqal
Le Phong Hoai
Ando Ai
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| Source Title |
Langmuir
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| Volume | 40 |
| Issue | 15 |
| Start Page | 8260 |
| End Page | 8270 |
| Abstract |
The introduction of macroporous structures into three-way catalysts (TWCs) through polymer template-assisted spray drying has attracted attention because of its enhanced gas diffusion and catalytic performance. However, the surface charge effect of polymeric template components has not been investigated to control the structure of the TWC particles during synthesis. Thus, this study investigated the effect of template surface charges on the self-assembly behavior of TWC nanoparticles (NPs) during drying. The self-assembly of TWC NPs and polymer particles with different charges produced a hollow structure, whereas using the same charges generated a porous one. Consequently, the mechanism of particle self-assembly during drying and final structure particle formation is proposed in this study. Here, porous TWC particles demonstrated a faster oxidation of soot particles than that of hollow-structured particles. This occurred as a result of the larger contact area between the catalyst surface and the solid reactant. Our findings propose a fundamental self-assembly mechanism for the formation of different TWC structures, thereby enhancing soot oxidation performance using macroporous structures.
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| Descriptions |
This research was supported by JSPS KAKENHI Grant Numbers JP23H01745, JP22K20482, and JP23K13590. This work was also supported by JST, the establishment of university fellowships toward the creation of science and technology innovation, grant No. JPMJFS2129. This work is currently supported by a project, JPNP14004, commissioned by the New Energy and Industrial Technology Development Organization (NEDO) and the research association of Automotive Internal Combustion Engines (AICE). This work was partly supported by the International Network on Polyoxometalate Science at Hiroshima University, the JSPS Core-to-Core Program, and the Information Center of Particle Technology, Japan. The authors thank Dr. Makoto Maeda of the Natural Science Center for Basic Research and Development (N-BARD) at Hiroshima University for TEM observation.
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| Language |
eng
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| Resource Type | journal article |
| Publisher |
American Chemical Society
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| Date of Issued | 2024-04-04 |
| Rights |
This document is the Accepted Manuscript version of a Published Work that appeared in final form in Langmuir, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.langmuir.4c00490
This is not the published version. Please cite only the published version.
この論文は出版社版ではありません。引用の際には出版社版をご確認、ご利用ください。
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| Publish Type | Accepted Manuscript |
| Access Rights | embargoed access |
| Source Identifier |
[DOI] https://doi.org/10.1021/acs.langmuir.4c00490
isVersionOf
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| 助成機関名 |
日本学術振興会
Japan Society for the Promotion of Science
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| 助成機関識別子 |
[Crossref Funder] https://doi.org/10.13039/501100001691
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| 研究課題名 |
高次構造ポーラス微粒子創製のプロセスサイエンスの構築と物質移動特性の解明 研究課題
Development of process science for the creation of porous particles with highly-ordered structure and elucidation of mass transfer characteristics
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| 研究課題番号 |
23H01745
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| 助成機関名 |
日本学術振興会
Japan Society for the Promotion of Science
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| 助成機関識別子 |
[Crossref Funder] https://doi.org/10.13039/501100001691
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| 研究課題名 |
規則性マクロポーラス酸化物担体を用いた固体高分子形燃料電池の高耐久・高性能化
規則性マクロポーラス酸化物担体を用いた固体高分子形燃料電池の高耐久・高性能化
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| 研究課題番号 |
22K20482
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| 助成機関名 |
日本学術振興会
Japan Society for the Promotion of Science
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| 助成機関識別子 |
[Crossref Funder] https://doi.org/10.13039/501100001691
|
| 研究課題名 |
微粒子ナノ構造化技術による燃料電池触媒層の細孔ネットワークエンジニアリング
Pore Network Engineering of Fuel Cell Catalyst Layers by Particle Nanostructuring Technology
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| 研究課題番号 |
23K13590
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