Facile and Green Approach To Fabricate Gold and Silver Coated Superparamagnetic Nanoparticles

Chin, S.F. and K., Swaminathan Iyer and Raston, Colin L. (2009) Facile and Green Approach To Fabricate Gold and Silver Coated Superparamagnetic Nanoparticles. Crystal Growth & Design, 9 (6). pp. 2685-2689. ISSN 1528-7505

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Official URL: http://www.researchgate.net/publication/231232512_...


Superparamagnetic magnetite nanoparticles are coated with homogeneous gold and silver shells using a simple aqueous based seed mediated method at room temperature with dopamine as a surfactant. Nanoparticles of Au in the range 2-3 nm are attached to amine functionalized Fe3O4 nanoparticles, acting as seed for the growth of ultrathin Au or Ag shells. The monodispersed core-shell nanoparticles Fe3O4@Au and Fe3O4@Ag have a particle size range of 10-13 nm with a shell thickness of approximately 2-3 nm. They are magnetically purified and are superparamagnetic at 300 K with saturated magnetization values of 41 and 35 emu g-1, respectively.

Item Type: Article
Uncontrolled Keywords: Superparamagnetic iron oxide nanoparticles, maghemite, magnetite, unimas, university, universiti, Borneo, Malaysia, Sarawak, Kuching, Samarahan, ipta, education, research, Universiti Malaysia Sarawak
Subjects: Q Science > QD Chemistry
Divisions: Academic Faculties, Institutes and Centres > Faculty of Resource Science and Technology
Depositing User: Karen Kornalius
Date Deposited: 03 Dec 2015 06:16
Last Modified: 20 Jan 2022 01:36
URI: http://ir.unimas.my/id/eprint/9881

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