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Liquid dynamics in ionic liquid based nanofluids

Research Project

Project/Area Number 19K12632
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 80040:Quantum beam science-related
Research InstitutionFukuoka University

Principal Investigator

Yoshida Koji  福岡大学, 理学部, 准教授 (00309890)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywordsナノ流体 / 液体 / 中性子散乱 / X線散乱 / ダイナミクス / X線散乱 / X線非弾性散乱
Outline of Research at the Start

液体に数体積%のナノ粒子を分散させたナノ流体は純液体に比べて熱伝導率が高いことが報告されており、その応用として熱交換機やエンジンのラジエータ、マイクロエレクトロニクス機器の性能の向上が期待されている。本研究ではナノ流体を構成する液体分子のダイナミクスを中性子・X線散乱により測定し、ナノ流体の熱伝導率や粘性率といったマクロな量を液体分子のミクロな運動から説明することを試みる。その結果、ナノ流体の熱伝導率を向上する機構が分子論的に明らかになり、高い熱伝導率ならびに低い粘性率を持つ高機能なナノ流体の設計指針を提案する。

Outline of Final Research Achievements

Nanofluids, in which a few volume percent of nanoparticles are dispersed in various liquids, such as an ionic liquid, are attracting attention as a new heat transport medium. X-ray and neutron scattering, and NMR measurements were performed to clarify the cause of the high thermal conductivity of nanofluids in terms of the motion of the liquid that constitutes the nanofluid. By using different techniques, the dynamics of liquid molecules were observed over a wide time scale, and the translational and rotational motions of liquid molecules were revealed. The experimental results show that liquid molecules on the nanoparticle surface are slowed down in motion by their interaction with the nanoparticles. This information can verify the result of nanofluids by computer simulations. We can control the properties of nanofluids by molecular design in the future.

Academic Significance and Societal Importance of the Research Achievements

熱エネルギーの輸送は熱マネージメントにおいて重要であり、エネルギーの有効利用のためには高効率な熱輸送媒体の開発は必要不可欠となっている。ナノ流体は純液体に比べて熱伝導率が高いことが報告されており、新しい熱輸送媒体として期待されている。本研究では、ナノ流体を構成する液体のダイナミクスを幅広い時間スケールで観測した。その結果、ナノ粒子表面での液体分子はナノ粒子との相互作用で運動が遅くなっていることが明らかになった。分子間相互作用の観点から液体の構造や運動を調べることで、ナノ流体の物性の発現原理を明らかにし、物性の制御可能性を示した。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (21 results)

All 2022 2021 2020 2019

All Journal Article (12 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 11 results) Presentation (7 results) (of which Int'l Joint Research: 4 results,  Invited: 1 results) Book (2 results)

  • [Journal Article] The translational, rotational, and phonon dynamics of water in ZrO2 /water nanofluid2022

    • Author(s)
      Yoshida Koji、Sanada Yusuke、Yamaguchi Toshio、Matsuura Masato、Tamatsukuri Hiromu、Uchiyama Hiroshi
    • Journal Title

      Journal of Molecular Liquids

      Volume: 366 Pages: 120218-120218

    • DOI

      10.1016/j.molliq.2022.120218

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effects of molecular shape and flexibility on fast sound of organic liquids2022

    • Author(s)
      Yamaguchi Tsuyoshi、Yoshida Koji、Hosokawa Shinya、Ishikawa Daisuke、Baron Alfred Q. R.
    • Journal Title

      The Journal of Chemical Physics

      Volume: 157 Issue: 15 Pages: 154504-154504

    • DOI

      10.1063/5.0107387

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Water structure in 100 nm nanochannels revealed by nano X-ray diffractometry and Raman spectroscopy2022

    • Author(s)
      Shirai Jun、Yoshida Koji、Koreeda Hiroki、Kitamori Takehiko、Yamaguchi Toshio、Mawatari Kazuma
    • Journal Title

      Journal of Molecular Liquids

      Volume: 350 Pages: 118567-118567

    • DOI

      10.1016/j.molliq.2022.118567

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] The structure of aqueous solutions of hexafluoro-iso-propanol studied by neutron diffraction with hydrogen/deuterium isotope substitution and empirical potential structure refinement modeling2021

    • Author(s)
      K. Yoshida, T. Yamaguchi, D. T. Bowron, J. L. Finney
    • Journal Title

      Physical Chemistry Chemical Physics

      Volume: 23 Issue: 24 Pages: 13561-13573

    • DOI

      10.1039/d1cp00950h

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Collective dynamics of liquid acetone investigated by inelastic X-ray scattering2021

    • Author(s)
      Hosokawa Shinya、Kamiyama Takashi、Yoshida Koji、Yamaguchi Toshio、Tsutsui Satoshi、Baron Alfred Q.R.
    • Journal Title

      Journal of Molecular Liquids

      Volume: 332 Pages: 115825-115825

    • DOI

      10.1016/j.molliq.2021.115825

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Ion Solvation and Water Structure in an Aqueous Sodium Chloride Solution in the Gigapascal Pressure Range2020

    • Author(s)
      Yamaguchi Toshio、Fukuyama Nami、Yoshida Koji、Katayama Yoshinori
    • Journal Title

      The Journal of Physical Chemistry Letters

      Volume: 12 Issue: 1 Pages: 250-256

    • DOI

      10.1021/acs.jpclett.0c03147

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] The structural elucidation of aqueous H3BO3 solutions by DFT and neutron scattering studies2020

    • Author(s)
      Zhou Yongquan、Yamaguchi Toshio、Zhang Wenqian、Ikeda Kazutaka、Yoshida Koji、Zhu Fayan、Liu Hongyan
    • Journal Title

      Physical Chemistry Chemical Physics

      Volume: 22 Issue: 30 Pages: 17160-17170

    • DOI

      10.1039/d0cp02306j

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Dihydrogen Bonds in Aqueous NaBD4 Solution by Neutron and X-ray Diffraction2020

    • Author(s)
      Zhou Yongquan、Yamaguchi Toshio、Ikeda Kazutaka、Yoshida Koji、Otomo Toshiya、Fang Chunhui、Zhang Wenqian、Zhu Fayan
    • Journal Title

      The Journal of Physical Chemistry Letters

      Volume: 11 Issue: 5 Pages: 1622-1628

    • DOI

      10.1021/acs.jpclett.9b03183

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Ion hydration and association in aqueous potassium tetrahydroxyborate solutions2020

    • Author(s)
      Zhu Fayan、Yamaguchi Toshio、Yoshida Koji、Zhang Wenqian、Liu Hongyan、Zhou Yongquan、Fang Chunhui
    • Journal Title

      The Analyst

      Volume: 145 Issue: 6 Pages: 2245-2255

    • DOI

      10.1039/c9an01662g

    • Related Report
      2020 Research-status Report
  • [Journal Article] Generalized Langevin analysis of inelastic X-ray scattering for copper/ethylene glycol nanofluid2019

    • Author(s)
      Yoshida K.、Yamaguchi T.
    • Journal Title

      Chemical Physics Letters

      Volume: 718 Pages: 74-79

    • DOI

      10.1016/j.cplett.2019.01.024

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Hydrogen bonding and clusters in supercritical methanol?water mixture by neutron diffraction with H/D substitution combined with empirical potential structure refinement modelling2019

    • Author(s)
      Yoshida Koji、Ishida Shigeru、Yamaguchi Toshio
    • Journal Title

      Molecular Physics

      Volume: 117 Issue: 22 Pages: 3297-3310

    • DOI

      10.1080/00268976.2019.1633481

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Structure and dynamical properties of hydrated F-actin investigated by X-ray scattering2019

    • Author(s)
      Yoshida Koji、Uchiyama Hiroshi、Yamaguchi Toshio
    • Journal Title

      Journal of Molecular Liquids

      Volume: 291 Pages: 111265-111265

    • DOI

      10.1016/j.molliq.2019.111265

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] In-situ observation of the decomposing process of biomass samples in high-temperature high-pressure water by neutron imaging2022

    • Author(s)
      Yoshida K., Mishima K., Abe J., Matsumoto Y.
    • Organizer
      37th International Conference on Solution Chemistry
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ナノ空間に閉じ込められた水のX線構造解析2022

    • Author(s)
      吉田亨次 、山口敏男 、馬渡和真
    • Organizer
      2021年度量子ビームサイエンス
    • Related Report
      2021 Research-status Report
  • [Presentation] The effect of alkyl ammonium ionic liquids on aggregation of β-lactoglobulin2021

    • Author(s)
      K. Yoshida, T. Zenin, T. Yamaguchi
    • Organizer
      Polysolvat2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 300 nmのナノ空間に閉じ込められた水のX線回折測定2021

    • Author(s)
      吉田亨次 、山口敏男 、馬渡和真
    • Organizer
      第43回溶液化学シンポジウム
    • Related Report
      2021 Research-status Report
  • [Presentation] 酸化ジルコニウムナノ流体中の水のダイナミクス2020

    • Author(s)
      吉田 亨次、松浦 直人
    • Organizer
      日本分析化学会 第69会年会
    • Related Report
      2020 Research-status Report
  • [Presentation] Inelastic X-ray scattering measurements of copper/ethylene glycol and alumina/water nanofluids2019

    • Author(s)
      K. Yoshida, T. Yamaguchi
    • Organizer
      36th International Conference of Solution Chemistry
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Solvent dynamics of nanofluids investigated by X-ray scattering2019

    • Author(s)
      K. Yoshida, T. Yamaguchi, K. Yano
    • Organizer
      International Conference on Small Science 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Book] 高圧力の科学・技術事典2022

    • Author(s)
      赤坂一之, 赤浜裕一, 東 正樹, 跡見順子, 阿部 洋, 阿部文快, 石河孝洋, 石黒 亮, 石松直樹, 一柳光平, 伊藤英司, 稲熊宜之, 乾 雅祝, 井上 徹, 今井基晴, 入舩徹男, 岩橋 均, 上杉健太, 上床美也, 吉田亨次 (他 152名)
    • Total Pages
      500
    • Publisher
      朝倉書店
    • ISBN
      9784254102970
    • Related Report
      2022 Annual Research Report
  • [Book] Molecular Basics of Liquids and Liquid-Based Materials2022

    • Author(s)
      K. Nishiyama, T. Yamaguchi, T. Takamuku, N. Yoshida
    • Total Pages
      481
    • Publisher
      Springer
    • ISBN
      9811653941
    • Related Report
      2021 Research-status Report

URL: 

Published: 2019-04-18   Modified: 2024-01-30  

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