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Continuous and precise synthesis process of organic modified magnetic nanoparticles using supercritical segment space

Research Project

Project/Area Number 21K14454
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 27020:Chemical reaction and process system engineering-related
Research InstitutionTokyo Institute of Technology

Principal Investigator

Orita Yasuhiko  東京工業大学, 物質理工学院, 助教 (80883149)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2023: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2022: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2021: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
KeywordsSupercritical CO2 / nanoparticle / Surface modification / synthesis / extraction / hot-compressed water / 超臨界CO2 / 酸化鉄 / 水熱 / 合成 / 抽出 / supercritical CO2 / iron oxide nanoparticles / surface modification / supercritical extraction / hydrothermal synthesis / flow process / metal oxide nanoparticle / organic modification / slug flow
Outline of Research at the Start

高密度磁気記録デバイスの産業実用化に向けては,均一粒径・高修飾率の有機修飾ナノ粒子を連続・大量合成するプロセスの確立が必要となる.本研究は,「二段反応場を利用した粒子の形成場と成長場の分割」と「超臨界CO2+水系のセグメント空間」の融合を念頭に置いた,有機修飾ナノ粒子の連続合成プロセスの構築・設計を目的とする.研究目的の達成に向け,以下の項目を遂行する.
[A] 界面活性剤と相溶する高温高圧水中における有機修飾ナノ粒子の形成機構解明
[B] 水+超臨界CO2系のセグメント空間における有機修飾ナノ粒子の成長機構解明
[C] 統計熱力学モデルと分子情報を利用した水+超臨界CO2系の相平衡挙動の把握

Outline of Final Research Achievements

In this research project, we successfully synthesized surface-modified Fe3O4 nanoparticles in hot-compressed water and controlled their surface structure. Additionally, we successfully synthesized Fe2O3 nanoparticles in supercritical CO2 and controlled their particle size, aggregation, and surface structure. We also discovered a novel phenomenon in which CO2 drives the formation of metal oxides under supercritical CO2, allowing the low-temperature synthesis of metal oxide ceramics. Furthermore, we have demonstrated that surface-modified nanoparticles in the aqueous phase can be extracted with nearly 100% efficiency using supercritical CO2. In scCO2 extraction, we have also discovered a phenomenon in which nanoparticles tend to accumulate at the water-supercritical CO2 interface. These research results have led to research achievements in the form of 4 papers and 18 conference presentations (including two invited presentation).

Academic Significance and Societal Importance of the Research Achievements

本研究課題を通じて,金属酸化物系の表面修飾ナノ粒子に対して,「水熱下での晶析機構」,「超臨界CO2中での晶析機構」,「水相から超臨界CO2への抽出挙動」に関する多くの知見を創出することに成功した.特に,超臨界CO2を活用した表面修飾ナノ粒子の合成・抽出は,本研究課題が初めて開拓した学術領域であり,CO2自身による反応駆動効果や水-超臨界CO2界面での粒子集積といった新奇な現象も見出された.従って,これらの研究成果は,CO2利用工学・超臨界流体工学に新たな学術領域を創出し,従来にはない合成・抽出技術へと昇華しうる点に,学術的意義・社会的意義を有している.

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (23 results)

All 2024 2023 2022 2021

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (19 results) (of which Int'l Joint Research: 10 results,  Invited: 2 results)

  • [Journal Article] Low temperature synthesis of ZnO particles using a CO<sub>2</sub>-driven mechanism under high pressure2024

    • Author(s)
      Furuya Taishi、Shimoyama Yusuke、Orita Yasuhiko
    • Journal Title

      RSC Advances

      Volume: 14 Issue: 8 Pages: 5176-5183

    • DOI

      10.1039/d3ra07067k

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Systematically Designed Surface and Morphology of Magnetite Nanoparticles Using Monocarboxylic Acid with Various Chain Lengths under Hydrothermal Condition2023

    • Author(s)
      Wijakmatee Thossaporn、Shimoyama Yusuke、Orita Yasuhiko
    • Journal Title

      Langmuir

      Volume: 39 Issue: 26 Pages: 9253-9261

    • DOI

      10.1021/acs.langmuir.3c01225

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Formation mechanism of iron oxide nanoparticles using controlled hydrolysis reaction in supercritical carbon dioxide2023

    • Author(s)
      Yasuhiko Orita, Keito Kariya, Thossaporn Wijakmatee, Yusuke Shimoyama
    • Journal Title

      Colloids and Surfaces A: Physicochemical and Engineering Aspects

      Volume: 664 Pages: 131136-131136

    • DOI

      10.1016/j.colsurfa.2023.131136

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Synthesis of surface-modified iron oxide nanocrystals using supercritical carbon dioxide as the reaction field2022

    • Author(s)
      Yasuhiko Orita, Keito Kariya, Thossaporn Wijakmatee, Yusuke Shimoyama
    • Journal Title

      RSC advances

      Volume: 12 Issue: 13 Pages: 7990-7995

    • DOI

      10.1039/d1ra08580h

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 超臨界CO2を媒体とした酸化鉄ナノ粒子の高濃度合成におけるエントレーナ効果2024

    • Author(s)
      室之園 相生, 古屋 太志, 織田 耕彦,下山 裕介
    • Organizer
      化学工学会第89年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Formation mechanism of surface modified nanocrystals using controlled hydrolysis reaction in high-pressure CO22023

    • Author(s)
      Yasuhiko Orita, Keito Kariya, Yusuke Shimoyama
    • Organizer
      6th International Conference on Materials Science & Nanotechnology
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] High-concentrated synthesis of surface modified iron oxide nanoparticles using supercritical CO22023

    • Author(s)
      Aoi Muronosono, Taishi Furuya, Yasuhiko Orita, Yusuke Shimoyama
    • Organizer
      The 12th International Conference on Separation Science and Technology
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 高圧CO2物性駆動によるZnO粒子の低温合成と微粒化への展開2023

    • Author(s)
      古屋 太志, 織田 耕彦, 下山 裕介
    • Organizer
      化学工学会第54回秋季大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 超臨界CO2を利用した表面修飾Fe3O4ナノ粒子の抽出技術2023

    • Author(s)
      織田 耕彦, Thossaporn Wijakmatee, 下山 裕介
    • Organizer
      化学工学会第88年会
    • Related Report
      2022 Research-status Report
  • [Presentation] Prediction of surface-modified iron oxide nanoparticles extraction from reaction field using solubility parameters and machine learning2023

    • Author(s)
      Thossaporn Wijakmatee, Yasuhiko Orita, Yusuke Shimoyama
    • Organizer
      International Chemical Engineering Symposia 2023
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 表面修飾ナノ結晶のドライ合成に向けた超臨界CO2技術の開発2022

    • Author(s)
      織田 耕彦, 苅谷 啓杜, 池田 開, 古屋 太志, 下山 裕介
    • Organizer
      化学工学会新潟大会2022
    • Related Report
      2022 Research-status Report
  • [Presentation] 超臨界CO2が駆動する酸化亜鉛微粒子の低温形成2022

    • Author(s)
      古屋 太志, 織田 耕彦, 下山 裕介
    • Organizer
      化学工学会新潟大会2022
    • Related Report
      2022 Research-status Report
  • [Presentation] Supercritical CO2 technology for the dry production of surface modified iron oxide nanocrystal2022

    • Author(s)
      Yasuhiko Orita, Kai Ikeda, Keito Kariya, Yusuke Shimoyama
    • Organizer
      International Congress on Pure & Applied Chemistry Kota Kinabalu
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Extraction of monocarboxylic acid modified magnetite nanoparticles from water phase using hexane as organic solvent2022

    • Author(s)
      Thossaporn Wijakmatee, Yasuhiko Orita, Yusuke Shimoyama
    • Organizer
      11th International Conference on Fine Particles Magnetism
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 超臨界CO2を媒体とした磁性ナノ粒子合成における温度と圧力の影響2022

    • Author(s)
      苅谷 啓杜, 織田 耕彦, 下山 裕介
    • Organizer
      化学工学会第53回秋季大会
    • Related Report
      2022 Research-status Report
  • [Presentation] Synthesis of surface modified iron oxide nanoparticles in supercritical CO2 for magnetic application2022

    • Author(s)
      Yasuhiko Orita, Keito Kariya, Thossaporn Wijakmatee, Yusuke Shimoyama
    • Organizer
      International Conference of Young Researchers on Advanced Materials
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 超臨界CO2を利用した表面修飾酸化鉄ナノ粒子の合成法の開発2022

    • Author(s)
      苅谷 啓杜, 織田 耕彦, 下山 裕介
    • Organizer
      化学工学会第87年会
    • Related Report
      2021 Research-status Report
  • [Presentation] 超臨界CO2中での加水分解反応を利用した表面修飾酸化鉄ナノ粒子の合成2021

    • Author(s)
      苅谷 啓杜, 織田 耕彦, 下山 裕介
    • Organizer
      分離技術会年会2021
    • Related Report
      2021 Research-status Report
  • [Presentation] Synthesis of decanoic acid-modified iron oxide nanocrystals using supercritical carbon dioxide as reaction medium2021

    • Author(s)
      Yasuhiko Orita, Keito Kariya, Thossaporn Wijakmatee, Yusuke Shimoyama
    • Organizer
      7th International Solvothermal and Hydrothermal Association Conference
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Fabrication of monocarboxylic acid-modified magnetite nanoparticles by hydrothermal synthesis2021

    • Author(s)
      Wijakmatee Thossaporn, Yasuhiko Orita, Yusuke Shimoyama
    • Organizer
      7th International Solvothermal and Hydrothermal Association Conference
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Synthesis of functionalized iron oxide nanoparticles using hydrolysis reaction in supercritical carbon dioxide2021

    • Author(s)
      Keito Kariya, Yasuhiko Orita, Yusuke Shimoyama
    • Organizer
      7th International Solvothermal and Hydrothermal Association Conference
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Synthesis of decanoic acid-modified iron oxide nanocrystals using supercritical carbon dioxide as reaction medium2021

    • Author(s)
      Yasuhiko Orita, Keito Kariya, Thossaporn Wijakmatee, Yusuke Shimoyama
    • Organizer
      The 9th international symposium on Molecular Thermodynamics and Molecular Simulation
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 超臨界CO2を反応場とした有機修飾酸化鉄ナノ結晶の直接合成2021

    • Author(s)
      織田 耕彦, Wijakmatee Thossaporn, 苅谷 啓杜, 下山 裕介
    • Organizer
      化学工学会第52回秋季大会
    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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