Growth mechanism and CO oxidation catalytic activity of raspberry-shaped Co₃O₄ nanoparticles

• 資料種別: 記事
• タイトル: Growth mechanism and CO oxidation catalytic activity of raspberry-shaped Co₃O₄ nanoparticles
• 著者標目: FUCHIGAMI Teruaki; KIMATA Ryosuke; HANEDA Masaaki; KAKIMOTO Ken-ichi
• 出版年月日等: 2020-05-01
• 出版年（W3CDTF）: 2020-05-01
• タイトル（掲載誌）: Journal of the Ceramic Society of Japan
• 巻号年月日等（掲載誌）: 128 5
• 掲載巻: 128
• 掲載号: 5
• 掲載ページ: 291-297
• 掲載年月日（W3CDTF）: 2020-05-01
• ISSN（掲載誌）: 18820743
• ISSN-L（掲載誌）: 13486535
• 出版事項（掲載誌）: The Ceramic Society of Japan
• 本文の言語コード: en
• 件名標目: Catalysts; Cobalt oxide; CO oxidation; Hydrothermal synthesis; Nanoparticles; Oriented attachment
• 対象利用者: 一般
• DOI: 10.2109/jcersj2.19177; https://doi.org/10.2109/jcersj2.19177
• オンライン閲覧公開範囲: インターネット公開
• 関連情報（URI）: https://www.jstage.jst.go.jp/article/jcersj2/128/5/128_19177/_pdf
• 参照: Ligand-assisted synthesis of functional inorganic nanomaterials with hierarchical nanostructure; https://cir.nii.ac.jp/crid/1390297305329234048
• 参照: Complex Three-Dimensional Co3O4 Nano-Raspberry: Highly Stable and Active Low-temperature CO Oxidation Catalyst; https://cir.nii.ac.jp/crid/1360011145224776064; Catalytic Oxidation of Carbon Monoxide over Transition Metal Oxides; https://cir.nii.ac.jp/crid/1360011145404914560; Total oxidation of propene at low temperature over Co3O4–CeO2 mixed oxides: Role of surface oxygen vacancies and bulk oxygen mobility in the catalytic activity; https://cir.nii.ac.jp/crid/1360011145957240320; Oriented Attachment Growth of Quantum-Sized CdS Nanorods by Direct Thermolysis of Single-Source Precursor; https://cir.nii.ac.jp/crid/1360292620985150592; Co3O4 nanocrystals and Co3O4–MOx binary oxides for CO, CH4 and VOC oxidation at low temperatures: a review; https://cir.nii.ac.jp/crid/1360574094108543872; Synthesis of niobium pentoxide nanoparticles in single-flow supercritical water; https://cir.nii.ac.jp/crid/1360847874820934144; Monolithic Au/CeO₂ nanorod framework catalyst prepared by dealloying for low-temperature CO oxidation; https://cir.nii.ac.jp/crid/1361137044973896832; Controllable synthesis of Co₃O₄ nanocrystals as efficient catalysts for oxygen reduction reaction; https://cir.nii.ac.jp/crid/1361418520491717632; Morphology control of cobalt oxide nanocrystals for promoting their catalytic performance; https://cir.nii.ac.jp/crid/1363388844895892224; Progress of nanocrystalline growth kinetics based on oriented attachment; https://cir.nii.ac.jp/crid/1363670319743874560; Low-temperature oxidation of CO catalysed by Co3O4 nanorods; https://cir.nii.ac.jp/crid/1363951793315462912; Direct TEM observations of growth mechanisms of two-dimensional MoS2 flakes; https://cir.nii.ac.jp/crid/1363951794146475392
• 連携機関・データベース: 国立情報学研究所 : CiNii Research; https://cir.nii.ac.jp/
• 提供元機関・データベース: Japan Link Center; https://japanlinkcenter.org/top; Crossref; https://www.crossref.org; CiNii Articles
• NII論文ID: 130007839538

• 要約等: <p>Raspberry-shaped Co₃O₄ nanoparticles has a great potential as a CO oxidation catalyst in a wide temperature range because of a high stability and a low-temperature oxidation activity. In this study, primary particle sizes, morphology and crystallite sizes were controlled by changing a synthesis time to enhance the CO oxidation activity and to reveal growth mechanism of the raspberry structure. The primary particle sizes increased while decreasing crystallite size, indicating crystal orientation and particle growth of Co₃O₄ nanoparticles were occurred in multistage, and a single-crystal-like structure formed in the hydrothermal treatment for 3.0 h. Long-time hydrothermal treatment for 12.5 h caused decomposition of the crystallographic orientation and the raspberry structure. H₂-temperature programmed reaction analysis indicated that crystal orientation among multiple Co₃O₄ nanoparticles improved a mobility of bulk oxygen species, and our previous findings that 93% of CO conversion rate for the raspberry-shaped Co₃O₄ nanoparticles was confirmed analytically by the high oxygen mobility in the early 3.0 h-hydrothermal treatment.</p>
• DOI: 10.2109/jcersj2.19177
• オンライン閲覧公開範囲: インターネット公開
• 連携機関・データベース: 科学技術振興機構 : J-STAGE; http://www.jstage.jst.go.jp