Preparation of Bi-based / Fe-based oxide heterojunction photocatalyst for photosterilization under LED irradiation

2023 Fiscal Year Final Research Report

• Project/Area Number: 19K05067
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 26040:Structural materials and functional materials-related
• Research Institution: Kitakyushu National College of Technology
• Principal Investigator: KENJI OBATA 北九州工業高等専門学校, 生産デザイン工学科, 准教授 (70370046)
• Co-Investigator(Kenkyū-buntansha): 松嶋 茂憲 北九州工業高等専門学校, 生産デザイン工学科, 教授 (80229476) ; 水野 康平 北九州工業高等専門学校, 生産デザイン工学科, 教授 (80342583)
• Project Period (FY): 2019-04-01 – 2024-03-31
• Keywords: 光殺菌 / 光触媒 / Fe系複合酸化物 / Bi系複合酸化物 / LED照明応答

Outline of Final Research Achievements

This research aims to develop novel photocatalysts based on Bi-based oxide and Fe-based oxide for high photosterilization activity under LED irradiation. We constructed a Z-scheme photocatalyst by heterojunction of Bi-based oxide with high oxidation activity and Fe-based oxide with a high reduction potential. We found that Bi2Zr2O7 oxide showed high MB dye decomposition activity. It was found that adding La as a dopant component to MgFe2O4 causes distortion of the crystal lattice, inhibits crystallite growth. Furthermore, we investigated the LED responsiveness of a Z-scheme photocatalyst that combined Bi2Zr2O7 and MgFe2O4. However, the photodegradation activity of the MB dye was insufficient.

Free Research Field

無機材料化学

Academic Significance and Societal Importance of the Research Achievements

本研究の特色は、材料科学と生物学・生化学を融合して新規な光殺菌触媒を創製することである。本研究の知見は、触媒化学, 電気化学, 環境科学分野などでの機能性材料開発においても重要であり、医療・福祉材料分野の発展に大いに貢献するものである。