Sonochemical Gold Coating of Fe3O4 Nanoparticles and Its Characterizations

Acta Chimica Sinica ›› 2007, Vol. 65 ›› Issue (13): 1273-1279. Previous Articles Next Articles

Original Articles

Fe₃O₄磁性纳米粒子的超声包金及其表征

吴伟¹, 贺全国*^,1, 陈洪¹,2, 汤建新¹, 聂立波¹

(¹湖南工业大学绿色包装与生物纳米技术应用实验室株洲 412008)
(²中南林业科技大学生命科学与技术学院长沙 410004)

投稿日期:2006-11-21 修回日期:2007-01-23 发布日期:2007-07-14
通讯作者: 贺全国

Sonochemical Gold Coating of Fe₃O₄ Nanoparticles and Its Characterizations

WU Wei¹; HE Quan-Guo*^,1; CHEN Hong¹,2; TANG Jian-Xin¹; NIE Li-Bo¹

(¹Green Packaging and Biological Nanotechnology Laboratory, Hunan University of Technol-ogy, Zhuzhou 412008)
(² College of Life Science and Technology, Central South University of Forestry & Technology, Changsha 410004)

Received:2006-11-21 Revised:2007-01-23 Published:2007-07-14
Contact: HE Quan-Guo

Abstract

Air-stable nanoparticles Fe₃O₄/Au have been prepared via sonolysis of a solution of hydrogen tetrachloroaureate(III) trihydrate (HAuCl₄) and (3-aminopropyl)triethoxysilane (APTES)-coated Fe₃O₄ nanoparticles with further drop-addition of sodium citrate. The Fe₃O₄/Au nanoparticles have been characterized by X-ray powder diffraction (XRD), ultraviolet-visible spectroscopy (UV-Vis), scanning elec-tron microscopy (SEM) with the energy dispersive spectroscopy (EDS), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and superconducting quantum interference device (SQUID) magnetometry. Fe₃O₄/Au nanoparticles obtained under appropriate conditions possess a very high saturation magnetization of about 63 emu•g^－1, and their average diameter was about 30 nm.

Key words: Fe₃O₄/Au magnetic nanoparticle, gold coating, sonochemical synthesis, surface modification, magnetic property, magnetite

Cite this article

WU Wei; HE Quan-Guo*^,1; CHEN Hong^1,2; TANG Jian-Xin; NIE Li-Bo. Sonochemical Gold Coating of Fe₃O₄ Nanoparticles and Its Characterizations[J]. Acta Chimica Sinica, 2007, 65(13): 1273-1279.

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Fe₃O₄磁性纳米粒子的超声包金及其表征

Sonochemical Gold Coating of Fe₃O₄ Nanoparticles and Its Characterizations

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Fe3O4磁性纳米粒子的超声包金及其表征