Wei Wu et al 2007 Nanotechnology 18 145609 doi:10.1088/0957-4484/18/14/145609
Wei Wu1, Quanguo He1,3, Hong Chen1,2, Jianxin Tang1 and Libo Nie1
Show affiliationsAir-stable nanoparticles of Fe3O4/Au were prepared via sonolysis of a solution mixture 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 were characterized by x-ray powder diffraction (XRD), ultraviolet–visible spectroscopy (UV–vis), scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS), transmission electron microscopy (TEM), x-ray photoelectron spectroscopy (XPS) and superconducting quantum interference device (SQUID) magnetometry. Nanoparticles of Fe3O4/Au obtained under appropriate conditions possess a very high saturation magnetization of about 63 emu g−1 and their average diameter is about 30 nm.
81.16.Be Chemical synthesis methods
68.37.Lp Transmission electron microscopy (TEM)
68.37.Ef Scanning tunneling microscopy (including chemistry induced with STM)
Issue 14 (11 April 2007)
Received 29 November 2006, in final form 22 January 2007
Published 6 March 2007
Wei Wu et al 2007 Nanotechnology 18 145609
K G McClements and R J McKay 2009 Plasma Phys. Control. Fusion 51 115009
Yang Ling et al 2009 Chinese Phys. Lett. 26 117104
D Matsumura et al 2009 J. Phys.: Conf. Ser. 190 012154
J Haug et al 2009 J. Phys.: Conf. Ser. 190 012124
Maria Antoniadou et al 2009 Nanotechnology 20 495201
Klaus Baberschke 2009 J. Phys.: Conf. Ser. 190 012012
Bishu Agarwal et al 2009 Phys. Scr. 80 055505
H.J. Kong et al 2009 Nucl. Fusion 49 125002
Jonas Fransson 2008 Nanotechnology 19 285714