2019 Fiscal Year Annual Research Report
Clay supported metal-free photocatalysts for detoxification of pesticide and pharmaceutical hazards
| Project/Area Number |
19F19393
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| Research Institution | Kyushu University |
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Principal Investigator |
笹木 圭子 九州大学, 工学研究院, 教授 (30311525)
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| Co-Investigator(Kenkyū-buntansha) |
VELLAICHAMY BALAKUMAR 九州大学, 工学(系)研究科(研究院), 外国人特別研究員
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| Project Period (FY) |
2019-11-08 – 2022-03-31
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| Keywords | Hollow porous g-C3N4 / photocatalysts / detoxification / pharmaceuticals / pesticides / wastewater |
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| Outline of Annual Research Achievements |
GQDs decorated on hollow porous g-C3N4 were successfully synthesized and characterized by XRD, FT-IR, BET, XPS, Pl, SEM, TEM and mapping analysis. The as-prepared metal-free nanocomposite shows an outstanding photocatalytic activity for the detoxification of paraquat under visible light irradiation. The degradation intermediates were confirmed by LC-MS analysis and the pathways were identified. This results are well supported to the energy-resolved distribution of electron traps using reversed double-beam photoacoustic spectroscopy.
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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
According to the proposed research plan, we are synthesized hollow porous g-C3N4 with GQDs composite and utilized for the degradation of pesticide pollutants, paraquat. Further, we synthesized metal-free clay supported hollow porous g-C3N4-polypyrrole and it will be characterized by DRS-UV, XPS, XRD, BET, TEM-EDX, Impedance, photocurrent and PL etc. The photocatalytic efficacy on metronidazole will be evaluated under visible light and the results will be monitored by UV-VIS, HPLC and LC-MS.
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| Strategy for Future Research Activity |
To synthesize metal-free clay supported GQDs on hollow porous g-C3N4-grafted conducting polymers (polyaniline, poly(o-touidine) and poly(o-anisidine)) and it will be characterized by various analytical techniques. The photocatalytic efficacy on pesticides (imidacloprid) and pharmaceuticals (tetracycline and ciprofloxacin) wastewater effluents will be evaluated under visible light and the results will be monitored by UV-VIS, HPLC and LC-MS. Further, the photocatalytic influencing parameters, degradation intermediates and reaction pathways under process. Finally, we will prepare the manuscript and submit to the Journal.
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