Synthesis of mixed anion compounds by using metal hydroxide nanoparticles

2023 Fiscal Year Final Research Report

• Project/Area Number: 22K14753
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 36010:Inorganic compounds and inorganic materials chemistry-related
• Research Institution: Hiroshima University
• Principal Investigator: Tarutani Naoki 広島大学, 先進理工系科学研究科(工), 特定准教授 (60806199)
• Project Period (FY): 2022-04-01 – 2024-03-31
• Keywords: 金属水酸化物塩 / ナノ粒子 / 複合アニオン化合物 / 有機-無機ハイブリッド材料

Outline of Final Research Achievements

The development of mixed-anion compounds containing multiple anionic species within a single compound has recently atracted attentions as a new frontier of inorganic materials. These compounds are typically synthesized by high-temperature treatment of metal oxide precursors in reactive gas atmospheres. On the other hand, use of solid-state reactanting agents instead of reactive gases has also been proposed. Inspired by solid-state reactanting agents route, this study focused on synthesizing mixed-anion compounds using metal hydroxide salt nanoparticles as precursors, which are hybrid materials composed of inorganic metal hydroxides and organic molecules. Experimental results, mainly obtained by using nickel hydroxide carbonates, revealed that various inorganic compounds containing mixed-anion compounds could be synthesized from metal hydroxide carbonate nanoparticles without external reactive gases supply.

Free Research Field

無機材料化学

Academic Significance and Societal Importance of the Research Achievements

種々の化合物をシンプルかつ同一の戦略で合成する手法の開発は材料化学の研究において重要な要素の一つである。これまでの研究では固相反応や固液反応、固気反応を駆使してターゲット材料が合成されてきた。それに対して本研究では、固相反応を発展させ、化合物内に金属前駆体と反応源をあわせもった材料からの種々の無機化合物および複合アニオン化合物の合成法開発に取り組んだ。有機－無機ハイブリッドな金属水酸化物塩のナノ粒子を用いることで、様々な化学組成、結晶構造の無機化合物をを作り分けられることを明らかにした。本成果は同一戦略での材料合成に向けた大きな一助となったと考える。