Emerging new ternary nitride materials using amide source

2023 Fiscal Year Final Research Report

• Project/Area Number: 21H02022
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 36010:Inorganic compounds and inorganic materials chemistry-related
• Research Institution: Hokkaido University
• Principal Investigator: MIURA Akira 北海道大学, 工学研究院, 准教授 (10603201)
• Co-Investigator(Kenkyū-buntansha): 長尾 雅則 山梨大学, 大学院総合研究部, 准教授 (10512478)
• Project Period (FY): 2021-04-01 – 2024-03-31
• Keywords: 窒化物 / 新規物質探索 / 電極触媒

Outline of Final Research Achievements

In this project, we synthesized new ternary nitrides, which are difficult to obtain by conventional methods, by reaction using amide powder, and we examined the properties of synthesized metal nitrides. The main results are as follows: 1) clarification of the relationship between the combustion temperature and reaction enthalpy in the synthesis of nitrides with chloride and sodium amide, 2) synthesis of new ternary nitrides containing manganese and rare earths, and discovery that a small amount of rare earths improves the catalytic ability for oxygen reduction. Furthermore, we succeeded in synthesizing new nitrogen-rich molybdenum nitrides in the reaction of sodium molybdenum oxide with dicyandiamide. These results indicate that we have succeeded in creating new nitrides by a novel synthetic method.

Free Research Field

無機化学、材料化学

Academic Significance and Societal Importance of the Research Achievements

窒化物材料の多様性・有用性を飛躍的に上げるためには、組成の自由度と合成の簡易さは重要である。本研究では、ナトリウムアミドを用いた新規手法を用いて複数のカチオンが含む窒化物を創出することとその触媒能の発現に成功した。また、古典的なセラミックス合成で用いる箱型炉と坩堝を用いて、大気中でモリブデン窒化物を合成し、合成した窒化物が新規組成を持つことを明らかにした。