Direct immobilization technique of noble metal nanoparticles on resin surface using reaction filed induced by radiation

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K05382
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 31010:Nuclear engineering-related
• Research Institution: Osaka University
• Principal Investigator: Seino Satoshi 大阪大学, 大学院工学研究科, 准教授 (90432517)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: ナノ粒子 / 樹脂 / 貴金属 / 放射線 / めっき / 抗菌 / 抗ウイルス

Outline of Final Research Achievements

We conducted research on a technique that utilizes chemical reactions induced by radiation exposure to immobilize noble metal nanoparticles on the surface of resin materials. We used ABS resin plates as a model and performed immobilization of Pd nanoparticles and Ag nanoparticles. The radiation exposure induced a reduction reaction of the metal ions and a modification reaction of the resin surface, demonstrating that the generated functional groups contribute to the immobilization of the metal nanoparticles. Furthermore, Pd nanoparticles functioned as an electroless plating catalyst, and it was found that they exhibited high adhesion strength to copper plating films. The resin material immobilized with Ag nanoparticles was confirmed to possess extremely high antibacterial and antiviral properties.

Free Research Field

ナノ粒子工学

Academic Significance and Societal Importance of the Research Achievements

放射線を利用したナノ粒子固定化技術により、樹脂材料に対し貴金属ナノ粒子を直接固定化できることが示された。Pdナノ粒子の固定化により、様々な樹脂材料への新たな無電解めっき技術へと適用することができる。またAgナノ粒子の固定化により、優れた抗菌性・抗ウイルス性を付与することができる。貴金属種と樹脂材料種との組み合わせを変えることで、様々な用途への展開も期待される。これらの成果は、同技術の新たな産業分野への応用の可能性を広げるものである。