Functionalization of Fe3O4 NPs by Silanization: Use of Amine APTES and Thiol MPTMS Silanes and Their Physical CharacterizationReport as inadecuate


Functionalization of Fe3O4 NPs by Silanization: Use of Amine APTES and Thiol MPTMS Silanes and Their Physical Characterization


Functionalization of Fe3O4 NPs by Silanization: Use of Amine APTES and Thiol MPTMS Silanes and Their Physical Characterization - Download this document for free, or read online. Document in PDF available to download.

1

Dipartimento di Chimica e Chimica Industriale, Università degli Studi di Genova, Via Dodecaneso 31, 16146 Genova, Italy

2

Dipartimento di Chimica e Chimica Industriale, Università degli Studi di Genova and CNR-SPIN Genova Unit, Via Dodecaneso 31, 16146 Genova, Italy





*

Author to whom correspondence should be addressed.



Academic Editor: Andrea P. Reverberi

Abstract In this paper the results concerning the synthesis of magnetite Fe3O4 nanoparticles NPs, their functionalization using silane derivatives, such as 3-Aminopropyltriethoxysilane APTES and 3-mercaptopropyltrimethoxysilane MPTMS, and their exhaustive morphological and physical characterization by field emission scanning electron microscopy FE-SEM with energy dispersion X-ray spectrometer EDX analysis, AC magnetic susceptibility, UV-VIS and IR spectroscopy, and thermogravimetric TGA analyses are reported. Two different paths were adopted to achieve the desired functionalization: 1 the direct reaction between the functionalized organo-silane molecule and the surface of the magnetite nanoparticle; and 2 the use of an intermediate silica coating. Finally, the occurrence of both the functionalization with amino and thiol groups has been demonstrated by the reaction with ninhydrin and the capture of Au NPs, respectively. View Full-Text

Keywords: magnetite nanoparticles; silica shell; AC magnetic susceptibility; functionalized organo silane molecules magnetite nanoparticles; silica shell; AC magnetic susceptibility; functionalized organo silane molecules





Author: Silvia Villa 1, Paola Riani 1,* , Federico Locardi 1 and Fabio Canepa 2

Source: http://mdpi.com/



DOWNLOAD PDF




Related documents