ナノ粒子Ｐｄの形成場としての自己組織化イオン液体修飾酸化グラフェン複合体の合成
| Project/Area Number |
17F17081
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| Research Category |
Grant-in-Aid for JSPS Fellows
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| Allocation Type | Single-year Grants |
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| Section | 外国 |
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| Research Field |
Composite materials/Surface and interface engineering
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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) |
KANCHARLA SRINIVASARAO 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) |
2017-04-26 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 2018: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 2017: ¥1,200,000 (Direct Cost: ¥1,200,000)
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| Keywords | graphene oxide / functionalization / selective extraction / Pd nanoparticle / Ionic liquid / Graphene oxide / Palladium extraction / Radioactive palladium / Organo-montmorillonite / Perchlorate removal / Gemini surfactant |
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| Outline of Annual Research Achievements |
The platinum group metal (PGM) reserves are depleting severely every year, and the demand to supply ratio is forecast to widen significantly by 2020. These factors induce the growing pressure on PGM recycling. High-level liquid waste (a spent nuclear fuel), spent automotive catalyst leachates are potential secondary sources for the urban mining of PGMs. The preparation of high acid tolerant and efficient functional materials is a challenging task in the solid phase recovery of noble metals. To overcome this issue, covalently functionalized graphene oxide (GO) materials were explored. The GO was covalently functionalized with 1-(3-aminopropyl)imidazole (ImGO), 2-methylthiophene (ThpGO), 2-aminoethanethiol (CysGO) through amide or amine formation at different reactive sites. Both ImGO and ThpGO were found efficient for the selective extraction of Pd from HLLW containing several metal ions. Both the materials could be recycled without a drop in efficiency for the studied five cycles.
CysGO was employed for the recovery of precious metals from the simulated spent catalyst leachates containing various PGMs (Pd, Pt and Rh), rare metals (Zr, Y, La and Ce), alkaline earth metals (Ba), and base metals (Cu, Fe, Zn, and Ni) at 1M acid concentration. CysGO could selectively extract precious metals from all three medium with Pd (87.7 mol%) as major component and Pt co-adsorbed in small amount. The regenerated materials were converted into PGM nanoparticle supported graphene materials, a well-known heterogeneous catalyst through simple pyrolysis under N2 atmosphere at 500oC.
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| Research Progress Status |
平成30年度が最終年度であるため、記入しない。
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| Strategy for Future Research Activity |
平成30年度が最終年度であるため、記入しない。
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Report
(2 results)
Research Products
(8 results)
