Development of metal alkoxide assisted solution plasma for low temperature crystallization of crystalline inorganic materials

2020 Fiscal Year Final Research Report

• Project/Area Number: 19K14699
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 14030:Applied plasma science-related
• Research Institution: Shinshu University
• Principal Investigator: Sudare Tomohito 信州大学, 先鋭領域融合研究群先鋭材料研究所, 助教(特定雇用) (40783923)
• Project Period (FY): 2019-04-01 – 2021-03-31
• Keywords: 液中プラズマ / 低温合成 / 金属アルコキシド / 層状複水酸化物

Outline of Final Research Achievements

We proposed a new reaction pathway that realizes low-temperature crystallization of crystalline inorganic materials. In this study, we aimed to promote crystallization by radical reaction and significantly reduce the crystallization temperature by using metal alkoxide as a raw material for the submerged plasma process. The examination of the generation condition of solution plasma revealed a pulse power supply which suppress the energy, the target compound is successfully obtained in a synthesis time of about 30 minutes at room temperature. A layered double hydroxide could be obtained. There have been few examples of applying the submerged plasma reaction field in the synthesis of non-crystalline materials, and the target compound was obtained by this method as the dawn of research.

Free Research Field

無機化学

Academic Significance and Societal Importance of the Research Achievements

吸着材やイオン伝導体，生体適合性材料のデバイス応用や実環境使用のためには，活性炭やグラフェンといったナノ材料や，繊維，フォイルといった担体材料との複合する必要がある。しかし，実際には，無機材料の結晶化温度の高さから，担体材料の特性劣化や熱分解といった問題が付きまとう。結晶化温度の低下には，従来の加熱以外の反応促進機構が必要であると考えた。研究代表者は，液中プラズマのラジカル制御に精通している。そこで，無機－有機複合物質である金属アルコキシドとして選択し，液中プラズマプロセスを適用することで，低温結晶化を実現し，上記のボトルネックの解決を通してプラズマ科学と無機化学の融合領域の開拓を目指した。