| Project/Area Number |
25550073
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Environmental conscious materials and recycle
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| Research Institution | University of Miyazaki |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
OHE Kaoru 宮崎大学, 工学部, 助教 (00315350)
IWAKUMA Minako 都城工業高等専門学校, 物質化学工学科, 准教授 (00342593)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 貴金属ナノ粒子 / 濃縮・還元機能 / 刺激応答性ポリマー / 水溶性キトサン誘導体 / 廃電子機器 / レアメタル / 次世代分離技術 / 高選択的分離 / 機能性キトサン誘導体 / 環境保全型リサイクル / 金ナノ粒子 / 真球状体 / 金箔 / pH応答性キトサン誘導体 / 貴金属回収技術 / 省エネ・環境保全 |
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| Outline of Final Research Achievements |
The final goal of this study is to create the innovative technologies to separate and recover precious metal ions in the aqueous solution as not ions but nano-particles using stimuli-responsive polymers having concentration and reduction functions. The stimuli-responsive (pH or temperature) polymers were newly synthesized using chitosan and chitosan derivatives. These polymers selectively adsorb precious metals in a large amount of base metals, and then the adsorbed precious metals were reduced to get their nano-particles on the surface of the polymers. In addition, we achieved to densely make nano-particles of gold on the polymer surface using the chitosan membrane indicating pH response, indicating that this method is applicable to development of new functional materials as well.
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