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Synthesis of ultrasmall Li–Mn spinel oxides exhibiting unusual ion exchange, electrochemical, and catalytic properties

The efficient surface reaction and rapid ion diffusion of nanocrystalline metal oxides have prompted considerable research interest for the development of high functional materials. Herein, we present a novel low-temperature method to synthesize ultrasmall nanocrystalline spinel oxides by controllin...

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Autores principales: Miyamoto, Yumi, Kuroda, Yoshiyuki, Uematsu, Tsubasa, Oshikawa, Hiroyuki, Shibata, Naoya, Ikuhara, Yuichi, Suzuki, Kosuke, Hibino, Mitsuhiro, Yamaguchi, Kazuya, Mizuno, Noritaka
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4601032/
https://www.ncbi.nlm.nih.gov/pubmed/26456216
http://dx.doi.org/10.1038/srep15011
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author Miyamoto, Yumi
Kuroda, Yoshiyuki
Uematsu, Tsubasa
Oshikawa, Hiroyuki
Shibata, Naoya
Ikuhara, Yuichi
Suzuki, Kosuke
Hibino, Mitsuhiro
Yamaguchi, Kazuya
Mizuno, Noritaka
author_facet Miyamoto, Yumi
Kuroda, Yoshiyuki
Uematsu, Tsubasa
Oshikawa, Hiroyuki
Shibata, Naoya
Ikuhara, Yuichi
Suzuki, Kosuke
Hibino, Mitsuhiro
Yamaguchi, Kazuya
Mizuno, Noritaka
author_sort Miyamoto, Yumi
collection PubMed
description The efficient surface reaction and rapid ion diffusion of nanocrystalline metal oxides have prompted considerable research interest for the development of high functional materials. Herein, we present a novel low-temperature method to synthesize ultrasmall nanocrystalline spinel oxides by controlling the hydration of coexisting metal cations in an organic solvent. This method selectively led to Li–Mn spinel oxides by tuning the hydration of Li(+) ions under mild reaction conditions (i.e., low temperature and short reaction time). These particles exhibited an ultrasmall crystallite size of 2.3 nm and a large specific surface area of 371 ± 15 m(2) g(−1). They exhibited unique properties such as unusual topotactic Li(+)/H(+) ion exchange, high-rate discharge ability, and high catalytic performance for several aerobic oxidation reactions, by creating surface phenomena throughout the particles. These properties differed significantly from those of Li–Mn spinel oxides obtained by conventional solid-state methods.
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spelling pubmed-46010322015-10-21 Synthesis of ultrasmall Li–Mn spinel oxides exhibiting unusual ion exchange, electrochemical, and catalytic properties Miyamoto, Yumi Kuroda, Yoshiyuki Uematsu, Tsubasa Oshikawa, Hiroyuki Shibata, Naoya Ikuhara, Yuichi Suzuki, Kosuke Hibino, Mitsuhiro Yamaguchi, Kazuya Mizuno, Noritaka Sci Rep Article The efficient surface reaction and rapid ion diffusion of nanocrystalline metal oxides have prompted considerable research interest for the development of high functional materials. Herein, we present a novel low-temperature method to synthesize ultrasmall nanocrystalline spinel oxides by controlling the hydration of coexisting metal cations in an organic solvent. This method selectively led to Li–Mn spinel oxides by tuning the hydration of Li(+) ions under mild reaction conditions (i.e., low temperature and short reaction time). These particles exhibited an ultrasmall crystallite size of 2.3 nm and a large specific surface area of 371 ± 15 m(2) g(−1). They exhibited unique properties such as unusual topotactic Li(+)/H(+) ion exchange, high-rate discharge ability, and high catalytic performance for several aerobic oxidation reactions, by creating surface phenomena throughout the particles. These properties differed significantly from those of Li–Mn spinel oxides obtained by conventional solid-state methods. Nature Publishing Group 2015-10-12 /pmc/articles/PMC4601032/ /pubmed/26456216 http://dx.doi.org/10.1038/srep15011 Text en Copyright © 2015, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Miyamoto, Yumi
Kuroda, Yoshiyuki
Uematsu, Tsubasa
Oshikawa, Hiroyuki
Shibata, Naoya
Ikuhara, Yuichi
Suzuki, Kosuke
Hibino, Mitsuhiro
Yamaguchi, Kazuya
Mizuno, Noritaka
Synthesis of ultrasmall Li–Mn spinel oxides exhibiting unusual ion exchange, electrochemical, and catalytic properties
title Synthesis of ultrasmall Li–Mn spinel oxides exhibiting unusual ion exchange, electrochemical, and catalytic properties
title_full Synthesis of ultrasmall Li–Mn spinel oxides exhibiting unusual ion exchange, electrochemical, and catalytic properties
title_fullStr Synthesis of ultrasmall Li–Mn spinel oxides exhibiting unusual ion exchange, electrochemical, and catalytic properties
title_full_unstemmed Synthesis of ultrasmall Li–Mn spinel oxides exhibiting unusual ion exchange, electrochemical, and catalytic properties
title_short Synthesis of ultrasmall Li–Mn spinel oxides exhibiting unusual ion exchange, electrochemical, and catalytic properties
title_sort synthesis of ultrasmall li–mn spinel oxides exhibiting unusual ion exchange, electrochemical, and catalytic properties
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4601032/
https://www.ncbi.nlm.nih.gov/pubmed/26456216
http://dx.doi.org/10.1038/srep15011
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