Fe_3O_4ナノ粒子の合成及び重金属に対する複合バイオソーベントへの応用

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概要

• 論文の詳細を見る

• Magnetite (Fe_3O_4) nanoparticles were fabricated by hydrolyzing Fe^<2+> and Fe^<3+> ions with NaOH diffusing through a half-permeable membrane. The Fe_3O_4 nanoparticles, about 15nm in diameter, showed ferrimagnetism with very small coercivity and remanent magnetization. The nanoparticles were combined with Sphaerotilus natans, a Gram negative bacterium used in biosorption of heavy metal ions in water, to prepare a composite biosorbent. The composite biosorbent showed excellent sorption properties to Pb^<2+> ion in a pH range between 6 and 8, and to Cr_2O_7^<2-> ion in a pH range below 4. The combination of Fe_3O_4 nanoparticles made it easy to separate the composite biosorbent from water by the use of a magnetic field and improved the sorption properties. It was also shown that the composite biosorbent was reusable after being rinsed with a dilute hydrochloric acid solution.

• 社団法人日本セラミックス協会の論文
• 2007-08-01

著者

• 鵜沼 英郎

  Materials Science and Engineering, Graduate School of Science and Engineering, Yamagata University

• 鵜沼 英郎

  Department Of Chemistry Faculty Of Engineering Yamagata University

• Zhao Jie

  Materials Science And Engineering Graduate School Of Science And Engineering Yamagata University:dep

• Guan Xiaohui

  Department Of Applied Chemistry Northeast Dianli University

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• Fe_3O_4ナノ粒子の合成及び重金属に対する複合バイオソーベントへの応用

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