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2022 Fiscal Year Annual Research Report

Oxidative destruction of refractory organic matter by titania-based metal single-atom co-catalyst

Research Project

Project/Area Number 21F21399
Allocation TypeSingle-year Grants
Research InstitutionKyoto University

Principal Investigator

高岡 昌輝  京都大学, 工学研究科, 教授 (80252485)

Co-Investigator(Kenkyū-buntansha) CAI JIABAI  京都大学, 工学(系)研究科(研究院), 外国人特別研究員
Project Period (FY) 2021-11-18 – 2024-03-31
KeywordsCatalyst / Characterization / Degradation / Mechanism / Lechate
Outline of Annual Research Achievements

The degradation mechanism of catalytic and the pathway of humic acid was revealed. The important parameters such as initial solution concentration, air/pureoxygen, reaction temperature, catalyst dosage, and single-atom loading were discussed. The
study of the synergistic enhancement effect of single-atom loading on the catalytic reaction system was emphasized. By using the constructed porous TiZrO4/M hollow sphere catalyst, the catalytic oxidation experiment of humic acidwas carried out, and the degradation mechanism and pathway of humic acid are proposed, revealing the degradation efficiency and the surface catalytic oxidation reaction mechanism of humic acid. Since the prepared H-TiZrO4/M composite catalytic material has unique multi-channel confined structure, the influence of its structure features on the heterogeneous interface adsorption characteristics, the mass transfer capacity and electron transfer rate were studied thoroughly. We published two papers.

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

Currently, we have completed the second and third step of the research plan on time. The catalytic oxidation degradation mechanism of the constructed heterogeneous H-TiZrO4/M catalytic reaction system was revealed. The degradation pathway of humic acid have also been revealed on time.

Strategy for Future Research Activity

The next step of research is also underway. The the degradation pathways of humic acid in the landfill leachate will be discussed through using GC, LC-MS, GC-MS. The catalytic oxidation effect of landfill leachate will be analyzed, including the conversion of humic acid and other organic matter. The impact of ammonia nitrogen in the leachate on the catalyst activity will be discussed in the next step.
We will be summarized the results and write the manuscript for publication.

  • Research Products

    (4 results)

All 2022 Other

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

  • [Int'l Joint Research] 清華大学(中国)

    • Country Name
      CHINA
    • Counterpart Institution
      清華大学
  • [Journal Article] Low-temperature degradation of humic acid via titanium zirconium oxide@copper single-atom activating oxygen: Mechanism and pathways2022

    • Author(s)
      Cai Jiabai、Li Huan、Feng Kai、Cheng Yingchao、He Shuting、Takaoka Masaki
    • Journal Title

      Chemical Engineering Journal

      Volume: 450 Pages: 138239~138239

    • DOI

      10.1016/j.cej.2022.138239

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Mineralize complex organic contaminants using only oxygen on dense copper atoms embedded in the walls of carbon nanotubes2022

    • Author(s)
      Cai Jiabai、Jing Qi、Li Huan、Wang Lin、Cheng Yingchao、Takaoka Masaki
    • Journal Title

      Applied Surface Science

      Volume: 605 Pages: 154760~154760

    • DOI

      10.1016/j.apsusc.2022.154760

    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Copper atoms inlaid in titanium zirconium oxide spherical shell for the robust Fenton-like treatment of complex biogas slurry2022

    • Author(s)
      JIABAI CAI, Huan Li, Masaki Takaoka
    • Organizer
      廃棄物資源循環学会
    • Int'l Joint Research

URL: 

Published: 2023-12-25  

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