2021 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 |
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| Outline of Annual Research Achievements |
The single-atom modified TiZrO4/M (Cu, Fe, Co, Ni) porous hollow sphere catalyst was synthesized by adjusting the reaction conditions such as the dosage of metal salt precursor, the temperature of programmed stepwise calcination temperature and single-atom co-catalyst loading using isovolume vacuum impregnation and co-calcination method.
The catalysts were characterized and analyzed by means of SEM, TEM, ACTEM, XPS, XRD, BET, and EXAFS, revealing the formation mechanism of functional nanomaterials. XRD analyses revealed the crystallographic structure of the catalyst. The surface chemical compositions and valence state of the catalysts were measured by XPS. The localized microstructural information of single-atom in catalyst was verified by EXAFS.
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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 first step of the research plan on time. The preparation of high-loading single-atom modified TiZrO4/M (Cu, Fe, Co, Ni) porous hollow sphere catalyst was finished. The characterization and analysis (SEM, TEM, STEM, XPS, XRD, BET and EXAFS) of the catalyst have also been completed on time.
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| Strategy for Future Research Activity |
The next step of research is also underway. The catalytic oxidation degradation mechanism of humic substances by the TiZrO4/M catalytic reaction system will be discussed from the aspects of important parameters such as humic acid initial solution concentration, air/high purity oxygen, reaction temperature, catalyst dosage and single-atom co-catalyst loading. The degradation mechanism of catalytic and the pathway of humic acid will be revealed in the next step.
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