Metal hydroxide salt monolayer nanoparticles: synthesis, redox characterization, and electrochemical catalytic performance

ACS Materials Letters Volume 4 Issue 8 Page 1430-1435 published_at 2022-07-05
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Title ( eng )
Metal hydroxide salt monolayer nanoparticles: synthesis, redox characterization, and electrochemical catalytic performance
Creator
Kimura Sota
Sakata Takuya
Suzuki Kazumasa
Source Title
ACS Materials Letters
Volume 4
Issue 8
Start Page 1430
End Page 1435
Abstract
Two-dimensional materials modified with low molecular weight species are known to show unique electronic properties. In this study, we focus on the synthesis and electrochemical investigation of metal hydroxide salt monolayer nanoparticles modified with different molecules toward improved electrochemical functions. Nickel hydroxide carboxylate nanoparticles were successfully prepared through the epoxide-mediated alkalinization method using alkylcarboxylates. It was found that the monolayer nanoparticles with a size of approximately 2 nm were formed directly from an ionic precursor or after ultrasonication post-treatment. Manganese, iron, and cobalt hydroxide carbonates were found to form monolayer nanoparticles through the same procedure. Synthesized nickel hydroxide carbonate monolayer nanoparticles with a short alkylcarboxylate showed enhanced redox processes and electrochemical functions due to higher proton diffusion coefficient, lower electron transfer resistance, and improved intrinsic catalytic activity. We propose that the results obtained in this study will provide a novel design strategy for metal hydroxide monolayer nanoparticulate catalysts toward high functionality.
Descriptions
This work was supported by JSPS KAKENHI (Grant Numbers JP20K15368, JP21H00149, JP22K14753, and JP22H05143), JSPS Core-to-Core Program, MEXT Leading Initiative for Excellent Young Researchers, MEXT Strategic Professional Development Program for Young Researchers (HIRAKU-Global), the Cooperative Research Program of Institute for Catalysis, Hokkaido University (Grant number 21A1007), the facilities of the Institute of Materials and Systems for Sustainability, Nagoya University, Iketani Science and Technology Foundation, and the Takahashi Industrial and Economic Research Foundation.
Language
eng
Resource Type journal article
Publisher
American Chemical Society
Date of Issued 2022-07-05
Rights
© 2022 American Chemical Society
This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Materials Letters, 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/acsmaterialslett.2c00411
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。
Publish Type Author’s Original
Access Rights open access
Source Identifier
[ISSN] 2639-4979
[DOI] https://doi.org/10.1021/acsmaterialslett.2c00411
[DOI] 10.1021/acsmaterialslett.2c00411
Remark The full-text file will be made open to the public on 5 July 2023 in accordance with publisher's 'Terms and Conditions for Self-Archiving'