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Synthesis of novel skin-friendly white pigment with suppressed photocatalytic activity

Research Project

Project/Area Number 17K06020
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Inorganic industrial materials
Research InstitutionKyoto Prefectural University

Principal Investigator

ONODA Hiroaki  京都府立大学, 生命環境科学研究科, 講師 (80360246)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords化粧品 / 白色顔料 / 酸化亜鉛 / 光触媒 / 粒子サイズ / 光触媒活性 / 粒子サイズ制御 / コアシェル型微粒子 / 顔料
Outline of Final Research Achievements

Titanium oxide and zinc oxide, which are currently used as white pigments for cosmetics (pigments; water- and oil-insoluble coloring powders), have strong photocatalytic activity and may cause skin damage due to sunlight. Therefore, the development of alternative products is required.
In this study, based on the research results of phosphate white pigments, I prepared a core-shell type pigment whose surface was changed to zinc phosphate by treating zinc oxide fine particles with phosphoric acid. I have developed a new white pigment for cosmetics that has low risk of skin damage due to its suppressed photocatalytic activity, and has a smooth application from a uniform and appropriate particle size.

Academic Significance and Societal Importance of the Research Achievements

現在、化粧品や日焼け止めの成分として酸化チタンや酸化亜鉛が用いられているが、これらは日光に含まれる紫外線に当たることにより皮脂を分解し、肌に負荷をかけている。そのため、化粧品や日焼け止めを用いることがシミや皮膚がんの要因になっているという報告もある。本研究では、紫外線に当たっても皮脂をあまり分解しない化粧品成分を開発して、肌に優しい化粧品を生み出すことに貢献するものである。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (6 results)

All 2020 2019 2018 Other

All Int'l Joint Research (1 results) Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (3 results) (of which Int'l Joint Research: 2 results)

  • [Int'l Joint Research] Ca’Foscari University of Venice(イタリア)

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Concentration and pH-control on phosphoric acid treatment of zinc oxide for novel white pigment2020

    • Author(s)
      Hiroaki Onoda, Daiki Higashide
    • Journal Title

      Materials Research Innovations

      Volume: 24(1) Issue: 1 Pages: 39-43

    • DOI

      10.1080/14328917.2018.1554791

    • Related Report
      2019 Annual Research Report 2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Low temperature phosphoric acid treatment of zinc oxide for novel white pigments2019

    • Author(s)
      Hiroaki Onoda, Daiki Higashide
    • Journal Title

      Ceramics-Silikaty

      Volume: 63(3) Pages: 291-296

    • DOI

      10.13168/cs.2019.0023

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Phosphoric acid treatment of zinc oxide with additives for novel white pigments2020

    • Author(s)
      Hiroaki Onoda, Kaho Hayashi
    • Organizer
      3rd International Joint Conference on Materials Science and Mechanical Engineering
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Low temperature phosphoric acid treatment of zinc oxide for novel white pigment2018

    • Author(s)
      Hiroaki Onoda, Daiki Higashide
    • Organizer
      International Symposium on Inorganic and Environmental Materials
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 酸化亜鉛のリン酸処理におけるpH及び濃度の影響2018

    • Author(s)
      斧田宏明、東出大輝
    • Organizer
      第27回無機リン化学討論会
    • Related Report
      2018 Research-status Report

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Published: 2017-04-28   Modified: 2021-02-19  

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