2022 Fiscal Year Annual Research Report
Oxidative destruction of refractory organic matter by titania-based metal single-atom co-catalyst
| Project/Area Number |
21F21399
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| Allocation Type | Single-year Grants |
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| Research Institution | Kyoto University |
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Principal Investigator |
高岡 昌輝 京都大学, 工学研究科, 教授 (80252485)
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| 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
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| Project Period (FY) |
2021-11-18 – 2024-03-31
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| Keywords | Catalyst / Characterization / Degradation / Mechanism / Lechate |
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| 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.
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| 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.
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| 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.
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