Solution-based synthesis, characterization, and applications of layered materials with prism-like morphology

2023 Fiscal Year Final Research Report

• Project/Area Number: 22K20556
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Multi-year Fund
• Review Section: 0502:Inorganic/coordination chemistry, analytical chemistry, inorganic materials chemistry, energy-related chemistry, and related fields
• Research Institution: Shinshu University
• Principal Investigator: Muramatsu Keisuke 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) (50915353)
• Project Period (FY): 2022-08-31 – 2024-03-31
• Keywords: 無機合成 / 形態制御 / 層状物質 / 異方成長

Outline of Final Research Achievements

While layered compounds with a columnar morphology that preferentially grow along the stacking direction are expected to open new material applications due to the inversion of morphological anisotropy, synthetic chemistry and functionalities of columnar layered crystals remain unexplored. In this research project, we advanced the anisotropic growth method using metal-diamine complexes and successfully synthesize columnar β-Co(OH)2 crystals with varying sizes and aspect ratios. Additionally, we developed a sulfidation method on the outer surface of layered metal hydroxide, including the edges, while maintaining the structure and morphology.

Free Research Field

無機合成化学

Academic Significance and Societal Importance of the Research Achievements

本研究成果は、過飽和度制御による層状金属水酸化物の異方成長に関する現象論的理解を深め、柱状層状化合物の合成法の一般化へとつながる可能性を示しており、層状化合物の合成化学における重要な進歩である。また、結晶の形態・形状や表面の状態は材料機能に大きく影響するため、本研究で見出した形状制御法や表面組成の制御法は、層状化合物の物質設計に新たな方向性を示し、触媒材料や電極材料開発において重要な研究シーズとなることが期待できる。