2015 Fiscal Year Final Research Report
Accumulation of rare-earth ion by DNA-immobilized nano-particles
| Project/Area Number |
25410195
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Green/Environmental chemistry
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| Research Institution | Okayama University of Science |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Keywords | DNA / 金属ナノ粒子 / レアアースイオン / グリーン化学 / 環境材料 / 有機-無機ハイブリッド体 / 金属イオン回収 / 重金属イオン |
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| Outline of Final Research Achievements |
DNA-immobilized Fe3O4 particles (DNA-Fe-particles) were prepared by mixing DNA, magnetic Fe3O4 particles, and the silane coupling reagent. These DNA-Fe-particles were stable in water. Additionally, we could simply collect the DNA-Fe-particles by a magnet from an aqueous solution. In addition, we demonstrated the accumulation of various metal ions, such as heavy and rare-earth metal ions, by the DNA-Fe-particles. As a result, although these DNA-Fe-particles could selectively accumulate heavy and rare-earth metal ions, these materials could not accumulate the light metal ions, such as Mg(II) and Ca(II) ions. Furthermore, the metal ion-accumulated DNA-Fe-particles could be recycled by washing them with an aqueous EDTA solution. Therefore, the DNA-Fe-particles may have potential use for biomedical application, such as the removal of harmful heavy metal ion in human body, and environmental applications, such as the accumulation of rare-earth metals from industrial waste.
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| Free Research Field |
生体関連高分子化学
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