Nanostructure control of metal silicide and investigations on the catalytic functions

2021 Fiscal Year Final Research Report

• Project/Area Number: 19K05153
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 27030:Catalyst and resource chemical process-related
• Research Institution: Osaka Prefecture University
• Principal Investigator: Kamegawa Takashi 大阪府立大学, 工学(系)研究科(研究院), 准教授 (50525136)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: 金属シリサイド / ナノ構造触媒 / 化学処理 / 吸着材 / 触媒担体

Outline of Final Research Achievements

A simple chemical treatment of bulk powder such as FeSi2 and CaSi2 induced the morphology changes to a flower-like structure under precisely controlled conditions. Flower-like structured FeSi2 with a high surface area showed a good catalytic performance in the degradation of organic contaminant in water. It was clarified that CaSi2 can be used as a good adsorbent of phosphate ions and metal ions in water. Small and highly dispersed metal and metal-oxide nanoparticles were formed on CaSi2 by using unique property of CaSi2, which were also worked as heterogeneous catalysts with a high catalytic performance.

Free Research Field

触媒化学

Academic Significance and Societal Importance of the Research Achievements

本研究では、地殻中に豊富に存在する元素より合成可能な無機材料である金属シリサイドに着目し、機能・特性の飛躍的な向上をもたらすナノ構造制御法を開発した。ナノ構造制御に伴い新たに発現する表面、空間、構造の巧みな利用を図ると共に物質固有の機能を活用することで、環境やエネルギー関連分野で利用可能な吸着材、触媒、触媒調製における担体材料としての特異な機能について明らかにすることができた。