Skoči na glavni sadržaj

Nanomaterials and Nanotechnology, Vol. 4 No. Godište 2014, 2014.

Izvorni znanstveni članak

https://doi.org/10.5772/58453

Functionalization of Cobalt Ferrite Nanoparticles by a Vitamin C-assisted Covering with Gold

Arunas Jagminas ; State Research Institute Center for Physical Sciences and Technology, Vilnius, Lithuania
Kestutis Mažeika ; State Research Institute Center for Physical Sciences and Technology, Vilnius, Lithuania
Rokas Kondrotas ; State Research Institute Center for Physical Sciences and Technology, Vilnius, Lithuania
Marija Kurtinaitiene ; State Research Institute Center for Physical Sciences and Technology, Vilnius, Lithuania
Aldona Jagminiene ; State Research Institute Center for Physical Sciences and Technology, Vilnius, Lithuania
Agne Mikalauskaite ; State Research Institute Center for Physical Sciences and Technology, Vilnius, Lithuania

Puni tekst: engleski pdf 2.672 Kb

str. 4-11

preuzimanja: 870

citiraj

Sažetak

We report the design and methodology for functionalization of the surface of small Co-ferrite nanoparticles with a mean size of up to 5.0 nm through the attachment of vitamin C molecules initiating [AuCl4]- reduction and the subsequent deposition of gold. By this method, Co-ferrite-Au nanoparticles have been fabricated for the first time in a simple and controllable manner, consisting of the determination of the consumed ascorbic acid content. The sequential addition of vitamin C and HAuCl4 to the ferrofluid at low concentrations leads to the formation of a gold shell on the ferrite core. This approach avoids the additional stabilization of ferrite nanoparticles before gold deposition, and is of great importance in view of the preparation of biodegradable superparamagnetic particles for nanomedicine applications. The deposition of gold onto the ferrite surface was proved herein by UV-vis absorption and energy-dispersive X-ray (EDX) spectroscopy, inductively coupled plasma mass spectrometry analysis, atomic force microscopy (AFM), high resolution transmission electron microscopy (HRTEM) and Mössbauer spectroscopy.

Ključne riječi

magnetic nanoparticles; co-ferrite; gold deposition; characterization

Hrčak ID:

142606

URI

https://hrcak.srce.hr/142606

Datum izdavanja:

1.1.2014.

Posjeta: 1.326 *