fabrication of 2-chloropyridine-functionalized fe3o4/amino-silane core–shell nanoparticles
نویسندگان
چکیده
in this report, magnetic iron oxide nanoparticles were synthesized via coprecipitation of fe2+ and fe3+ with ammonium hydroxide, and the surface of synthesized nanoparticles was organically functionalized by commercially available amine coupling agent namely, 3-aminopropyl trimethoxysilane (apts) by using well-known sol–gel method. further reaction of the synthesized fe3o4@apts core-shell magnetite nanoparticles with 2-chloropyridine via nucleophilic aromatic mechanism in position 2 led to the target molecule fe3o4@apts/ 2-chloropyridine. all prepared materials e.g the magnetite iron oxide, fe3o4@apts nanoparticles as well as organically coated fe3o4@apts/ 2-chloropyridine magnetite particles were characterized using fourier transforms infrared spectroscopy (ft-ir), scanning electron microscopy (sem), and thermogravimetric analysis (tga). sem images showed that the fe3o4@apts/ 2-chloropyridine nanoparticles were roughly spherical with average size of 45-55 nm. ftir indicated the formation of a layer of apts-py on the surface of the fe3o4 magnetite core. thermogravimetric analysis of the coated apts-py on the fe3o4 surface revealed that 8 % of organic materials coated on iron oxide nanoparticles.
منابع مشابه
Fabrication of 2-Chloropyridine-Functionalized Fe3O4/Amino-Silane Core–Shell Nanoparticles
In this report, magnetic iron oxide nanoparticles were synthesized via coprecipitation of Fe2+ and Fe3+ with ammonium hydroxide, and the surface of synthesized nanoparticles was organically functionalized by commercially available amine coupling agent namely, 3-aminopropyl trimethoxysilane (APTS) by using well-known sol–gel method. Further reaction of the synthesized Fe3O4@APTS core-shell magne...
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عنوان ژورنال:
international journal of nanoscience and nanotechnologyناشر: iranian nano society
ISSN 1735-7004
دوره 11
شماره 1 2015
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