Development of a MnOOH Mineral Electrocatalyst for Water Splitting by Controlling the Surface Defects of a Naturally Occurring Ore

Shun Tsunekawa; Arisu Sakai; Yoshiaki Tamura; Keisuke Hatada; Toshiaki Ina; Ke Hsuan Wang; Takeshi Kawai; Masaaki Yoshida

doi:10.1246/cl.210539

Development of a MnOOH Mineral Electrocatalyst for Water Splitting by Controlling the Surface Defects of a Naturally Occurring Ore

Shun Tsunekawa, Arisu Sakai, Yoshiaki Tamura, Keisuke Hatada, Toshiaki Ina, Ke Hsuan Wang, Takeshi Kawai, Masaaki Yoshida^*

^*Corresponding author for this work

Department of Physics

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

A MnOOH-based mineral electrocatalyst for the oxygen evolution reaction was developed using a natural ore that is typically insulating, simply by applying a ball milling treatment. This material catalytically decomposed water molecules to generate oxygen. Mn K-edge X-ray absorption spectroscopy analyses in the bulk and surface sensitive modes indicated that structural distortion at the surface provided the catalytically active sites. The formation of oxygen vacancies on natural ore surfaces is likely to be the key to developing efficient mineral electrocatalysts.

Original language	English
Pages (from-to)	50-53
Number of pages	4
Journal	Chemistry Letters
Volume	51
Issue number	1
DOIs	https://doi.org/10.1246/cl.210539
State	Published - 2022/01

Keywords

Mineral catalyst
Water splitting
XAFS

ASJC Scopus subject areas

General Chemistry

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1246/cl.210539

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title = "Development of a MnOOH Mineral Electrocatalyst for Water Splitting by Controlling the Surface Defects of a Naturally Occurring Ore",

abstract = "A MnOOH-based mineral electrocatalyst for the oxygen evolution reaction was developed using a natural ore that is typically insulating, simply by applying a ball milling treatment. This material catalytically decomposed water molecules to generate oxygen. Mn K-edge X-ray absorption spectroscopy analyses in the bulk and surface sensitive modes indicated that structural distortion at the surface provided the catalytically active sites. The formation of oxygen vacancies on natural ore surfaces is likely to be the key to developing efficient mineral electrocatalysts.",

keywords = "Mineral catalyst, Water splitting, XAFS",

author = "Shun Tsunekawa and Arisu Sakai and Yoshiaki Tamura and Keisuke Hatada and Toshiaki Ina and Wang, {Ke Hsuan} and Takeshi Kawai and Masaaki Yoshida",

year = "2022",

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doi = "10.1246/cl.210539",

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T1 - Development of a MnOOH Mineral Electrocatalyst for Water Splitting by Controlling the Surface Defects of a Naturally Occurring Ore

AU - Tsunekawa, Shun

AU - Sakai, Arisu

AU - Tamura, Yoshiaki

AU - Hatada, Keisuke

AU - Ina, Toshiaki

AU - Wang, Ke Hsuan

AU - Kawai, Takeshi

AU - Yoshida, Masaaki

PY - 2022/1

Y1 - 2022/1

N2 - A MnOOH-based mineral electrocatalyst for the oxygen evolution reaction was developed using a natural ore that is typically insulating, simply by applying a ball milling treatment. This material catalytically decomposed water molecules to generate oxygen. Mn K-edge X-ray absorption spectroscopy analyses in the bulk and surface sensitive modes indicated that structural distortion at the surface provided the catalytically active sites. The formation of oxygen vacancies on natural ore surfaces is likely to be the key to developing efficient mineral electrocatalysts.

AB - A MnOOH-based mineral electrocatalyst for the oxygen evolution reaction was developed using a natural ore that is typically insulating, simply by applying a ball milling treatment. This material catalytically decomposed water molecules to generate oxygen. Mn K-edge X-ray absorption spectroscopy analyses in the bulk and surface sensitive modes indicated that structural distortion at the surface provided the catalytically active sites. The formation of oxygen vacancies on natural ore surfaces is likely to be the key to developing efficient mineral electrocatalysts.

KW - Mineral catalyst

KW - Water splitting

KW - XAFS

UR - http://www.scopus.com/inward/record.url?scp=85122361519&partnerID=8YFLogxK

U2 - 10.1246/cl.210539

DO - 10.1246/cl.210539

M3 - 学術論文

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SN - 0366-7022

VL - 51

SP - 50

EP - 53

JO - Chemistry Letters

JF - Chemistry Letters

IS - 1

ER -

Development of a MnOOH Mineral Electrocatalyst for Water Splitting by Controlling the Surface Defects of a Naturally Occurring Ore

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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