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Creation of high-performance devices for "Three Cs" environmental purification by using composite photocatalysts

Research Project

Project/Area Number 21K19628
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 58:Society medicine, nursing, and related fields
Research InstitutionUniversity of Tsukuba

Principal Investigator

Yang Yingnan  筑波大学, 生命環境系, 教授 (50561007)

Project Period (FY) 2021-07-09 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2022: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2021: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Keywords光触媒技術 / ウイルス分解 / 殺菌 / デバイス / 複合型光触媒 / 環境浄化 / 高機能デバイス
Outline of Research at the Start

光触媒の分野では、可視光照射でウイルスや細菌などを高効率で分解できる光触媒が注目され、安全安心な環境づくりへの応用が期待されている。本研究は、光触媒技術を三密環境における公衆衛生の分野に展開し、新規複合材料を用いた衛生学を発展させるものである。そのために、申請者が開発した安全性と耐久性に優れた可視光を励起光源とする新規銀・リン酸銀担持TiO2光触媒と自己接着性を持つジメチルポリシロキサン高分子複合材料を用いてウイルス分解・殺菌に有効な複合型光触媒デバイスを作製し、実用化に向けて実証することを目的とする。

Outline of Final Research Achievements

In this study, we have fabricated a novel silver and silver phosphate-supported TiO2 composite that was immobilized on dimethylpolysiloxane polymer with self-adhesive properties. The photocatalytic device by using the developed composite showed higher efficiency on virus degradation and sterilization under visible light. We succeeded in developing a composite photocatalytic material that is inexpensive, stable, and durable firstly. Then we used that material to fabricate a photocatalytic device fixed to a reticulated scaffold and equipped with LEDs and a small ventilation fan. Using the developed device, we have verified the degradation of Enterococcus sp., a model bacterium used to verify the antiviral effect, and confirmed its sufficient antiviral and antibacterial effects. In addition, a comprehensive evaluation of safety and penetration was also conducted, and it became clear that practical deployment was fully possible.

Academic Significance and Societal Importance of the Research Achievements

ナノ粒子である本触媒の実用展開のため、自己接着性を持つジメチルポリシロキサンに着目し、光触媒と高分子を融合した複合材料の開発に挑戦した。また光触媒に含まれる銀イオンは抗菌性を持つため、明暗とも活用できる研究構想は触媒材料面での学術的貢献ができた。さらに、ウイルス分解・殺菌に焦点を絞って、安価で安全性と耐久性に優れた複合型光触媒を用いたウイルス分解・殺菌が可能なデバイスの創出によって、日本発新しい公共衛生・国際保健に貢献可能な技術を世界に発信できると考えられる。本研究で得られた成果は、学校、病院、交通機関、劇場、飲食店、老人ホーム、スポーツ業界、携帯電話などに応用展開が可能である。

Report

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

    (28 results)

All 2023 2022 2021

All Journal Article (11 results) (of which Int'l Joint Research: 8 results,  Peer Reviewed: 11 results,  Open Access: 6 results) Presentation (17 results) (of which Int'l Joint Research: 7 results,  Invited: 5 results)

  • [Journal Article] Fabrication of optimal oxygen vacancy amount in P/Ag/Ag2O/Ag3PO4/TiO2 through a green photoreduction process for sustainable H2 evolution under solar light2023

    • Author(s)
      Sun Xiang、Ming Jie、Ma Qiansu、Zhang Cheng、Zhu Yunxin、An Guangqi、Chen Guoping、Yang Yingnan
    • Journal Title

      Journal of Colloid and Interface Science

      Volume: 645 Pages: 176-187

    • DOI

      10.1016/j.jcis.2023.04.085

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Advanced photocatalytic sterilization for recalcitrant Enterococcus sp. contaminated water by newly developed Z-scheme Bi2WO6 based composites under solar light2023

    • Author(s)
      Ming Jie、Sun Xiang、Ma Qiansu、Liu Na、Zhang Cheng、Kawazoe Naoki、Chen Guoping、Yang Yingnan
    • Journal Title

      Chemosphere

      Volume: 310 Pages: 136912-136912

    • DOI

      10.1016/j.chemosphere.2022.136912

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Antibacterial silver-loaded TiO2 ceramic photocatalyst for water purification2022

    • Author(s)
      Qi Zhu、Miyazaki Yukari、Sugasawa Masami、Yang Yingnan、Negishi Nobuaki
    • Journal Title

      Journal of Water Process Engineering

      Volume: 50 Pages: 103225-103225

    • DOI

      10.1016/j.jwpe.2022.103225

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Synthesis and characterization of 3D-zeolite?modified TiO2-based photocatalyst with synergistic effect for elimination of organic pollutant in wastewater treatment2022

    • Author(s)
      Liu Na、Qi Ruilin、Sun Xiang、Kawazoe Naoki、Chen Guoping、Yang Yingnan
    • Journal Title

      Frontiers in Environmental Science

      Volume: 10 Pages: 1-12

    • DOI

      10.3389/fenvs.2022.1009045

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Visible light active graphene oxide modified Ag/Ag2O/BiPO4/Bi2WO6 for photocatalytic removal of organic pollutants and bacteria in wastewater2022

    • Author(s)
      Ma Qiansu、Ming Jie、Sun Xiang、Liu Na、Chen Guoping、Yang Yingnan
    • Journal Title

      Chemosphere

      Volume: 306 Pages: 135512-135512

    • DOI

      10.1016/j.chemosphere.2022.135512

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Sustainable and efficient reduction of pollutants by immobilized PEG-P/Ag/Ag2O/Ag3PO4/TiO2 photocatalyst for purification of saline wastewater2022

    • Author(s)
      Sharma Aditya、Ming Jie、Liu Na、Sun Xiang、Zhu Yunxin、Yano Minami、Chen Guoping、Yang Yingnan
    • Journal Title

      Marine Pollution Bulletin

      Volume: 179 Pages: 113731-113731

    • DOI

      10.1016/j.marpolbul.2022.113731

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Development of a novel solar energy controllable Linear fresnel photoreactor (LFP) for high-efficiency photocatalytic wastewater treatment under actual weather2022

    • Author(s)
      Zhang Cheng、Liu Na、Ming Jie、Sharma Aditya、Ma Qiansu、Liu Zhiyuan、Chen Guoping、Yang Yingnan
    • Journal Title

      Water Research

      Volume: 208 Pages: 117880-117880

    • DOI

      10.1016/j.watres.2021.117880

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Bactericidal process and practicability for environmental water sterilization by solar-light-driven Bi2WO6-based photocatalyst2022

    • Author(s)
      Ming Jie、Liu Na、Ma Qiansu、Sharma Aditya、Sun Xiang、Kawazoe Naoki、Chen Guoping、Yang Yingnan
    • Journal Title

      Journal of Water Process Engineering

      Volume: 47 Pages: 102713-102713

    • DOI

      10.1016/j.jwpe.2022.102713

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Sustainable photocatalytic disinfection of four representative pathogenic bacteria isolated from real water environment by immobilized TiO2-based composite and its mechanism2021

    • Author(s)
      Liu Na、Ming Jie、Sharma Aditya、Sun Xiang、Kawazoe Naoki、Chen Guoping、Yang Yingnan
    • Journal Title

      Chemical Engineering Journal

      Volume: 426 Pages: 131217-131217

    • DOI

      10.1016/j.cej.2021.131217

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Sol-gel/hydrothermal two-step synthesis strategy for promoting Ag species modified TiO2-based composite activity towards H2 evolution under solar light.2021

    • Author(s)
      Zhu, Q., Liu, N., Ma, Q., Sharma, Aditya, Nagai, D., Sun, X., Zhang, C., Yang, Y. N.
    • Journal Title

      Materials Today Energy.

      Volume: 20 Pages: 100648-100648

    • DOI

      10.1016/j.mtener.2021.100648

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Aqueous mechano-bactericidal action of acicular aragonite crystals2021

    • Author(s)
      Negishi Nobuaki、Inaba Tomohiro、Miyazaki Yukari、Ishii Genki、Yang Yingnan、Koura Setsuko
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 19218-19218

    • DOI

      10.1038/s41598-021-98797-w

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Development of Solar-driven TiO2 Based Composite Silicone Immobilized Photocatalytic System for Antibiotic Wastewater Treatment.2022

    • Author(s)
      Yano Minami, Aditya Sharma, Yang Yingnan
    • Organizer
      The 14th Japan-China-Korea International Postgraduate Academic Forum
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Development of a Solar-controllable Microalgal Pretreatment Device Equipped with the Optimized Photocatalytic Mesh Stack Structure2022

    • Author(s)
      Cheng Zhang, Jie Ming, Yingnan Yang
    • Organizer
      14th Japan-China-Korea International Postgraduate Academic Forum, online
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Modulation of Oxygen Vacancy Assisted P/Ag/Ag2O/Ag3PO4/TiO2 Composite for Improved Photocatalytic H2 Evolution under Solar Light2022

    • Author(s)
      Sun Xiang, Ming Jie, Yang Yingnan
    • Organizer
      The 14th Japan-China-Korea International Postgraduate Academic Forum
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Bactericidal Mechanism of Ag/Ag2O/BiPO4/Bi2WO6 for Inactivation of Escherichia coli under Solar Light Irradiation2022

    • Author(s)
      Jie Ming, Xiang Sun, Cheng Zhang, Yingnan Yang
    • Organizer
      Water and Environment Technology Conference
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Regulating the amount of oxygen vacancy in P/Ag/Ag2O/Ag3PO4/TiO2 composite for improved hydrogen evolution under solar light.2022

    • Author(s)
      Sun, X., Ming, J., Zhang, C., Yang, Y. N
    • Organizer
      87th SCEJ Annual Meeting
    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Invited
  • [Presentation] Effect of oxygen vacancy and its quantity on H2 evolution by using P/Ag/Ag2O/Ag3PO4/TiO2 under solar light2022

    • Author(s)
      Sun X., Ming J., Yang, Y. N
    • Organizer
      つくば医工連携フォーラム202
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Effective photocatalytic inactivation of novel Ag/Ag2O/BiPO4/Bi2WO6 composites for Escherichia coli: Mechanism and Applicability2022

    • Author(s)
      Ming J., Sun X., Yang, Y. N.
    • Organizer
      つくば医工連携フォーラム2022
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Development of a solar-controllable reactor for high-efficiency photocatalytic wastewater treatment under real sunlight2022

    • Author(s)
      Zhang C., Yang, Y. N.
    • Organizer
      つくば医工連携フォーラム2022
    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Invited
  • [Presentation] シリコン固定型光触媒担持ビーズの開発2022

    • Author(s)
      矢野 南珠、Sharma Aditya、楊 英男
    • Organizer
      つくば医工連携フォーラム2022
    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Invited
  • [Presentation] Effect of oxygen vacancy and its quantity on H2 evolution by using P/Ag/Ag2O/Ag3PO4/TiO2 under solar light.2022

    • Author(s)
      Sun X., Ming J., Yang, Y. N.
    • Organizer
      つくば医工連携フォーラム2022
    • Related Report
      2021 Research-status Report
  • [Presentation] Effective photocatalytic inactivation of novel Ag/Ag2O/BiPO4/Bi2WO6 composites for Escherichia coli: Mechanism and Applicability.2022

    • Author(s)
      Ming J., Sun X., Yang, Y. N.
    • Organizer
      つくば医工連携フォーラム2022
    • Related Report
      2021 Research-status Report
  • [Presentation] Fabrication of Ag/Ag2O/BiPO4/Bi2WO6/g-C3N4 Z-scheme photocatalyst.2022

    • Author(s)
      Zhang H.J., Sun X., Ming, J., Yang, Y. N.
    • Organizer
      つくば医工連携フォーラム2022
    • Related Report
      2021 Research-status Report
  • [Presentation] Effective disinfection of Bi2WO6 based photocatalysts for Escherichia coli under solar light irradiation2021

    • Author(s)
      Ming, J., Ma, Q., Sun, X., Yang, Y. N.
    • Organizer
      The 13th Japan-China-Korea International Postgraduate Academic Forum (online Conference)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] A novel solar energy controllable photoreactor for high efficiency wastewater treatment under real weather condition2021

    • Author(s)
      Zhang, C., Ming, J., Yang, Y. N.
    • Organizer
      The 13th Japan-China-Korea International Postgraduate Academic Forum (online Conference)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Development of Efficient and Stable Photocatalytic Beads for Practical Wastewater Treatment.2021

    • Author(s)
      Yano, M., Sharma, A., Yang, Y. N.
    • Organizer
      The 13th Japan-China-Korea International Postgraduate Academic Forum (online Conference)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Enhanced Stability and Durability of Solar-light-driven TiO2-based Composite Immobilized on Silicone for Saline Wastewater Treatment2021

    • Author(s)
      Sharma, A., Yang, Y. N.
    • Organizer
      he Water and Environment Technology (WET) Conference 2021-online.
    • Related Report
      2021 Research-status Report
  • [Presentation] Effective inactivation of Escherichia coli by Bi2WO6 based solar-light-driven photocatalyst.2021

    • Author(s)
      Ming J, Liu N, Ma Q, Sun X, Yang, Y. N.
    • Organizer
      日本生物工学会2021若手会オンラインセミナー
    • Related Report
      2021 Research-status Report

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Published: 2021-07-13   Modified: 2024-01-30  

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