Abstract
Fibers comprising the hydrophilic polymer polyvinylpyrrolidone K90, cetyltrimethylammonium bromide, tetraethyl orthosilicate and Fe3O4 were fabricated using an electrospinning process. Silica coated magnetite (Fe3O4@SiO2) core-shell nanoparticles (NPs) with high magnetic sensitivity were spontaneously formed through molecular self-assembly when the fibers were added to 80% aqueous ethanol (pH 9.0). The sizes of the Fe3O4@SiO2 particles could be manipulated from 30nm to 83nm by varying the Fe3O4 content in the fibers. A possible mechanism for the formation of templated Fe3O4@SiO2 NPs is proposed. Since the nanoparticles have high magnetic sensitivity and controllable particle size (<100nm), and are prepared via a facile and convenient strategy, they have much promise in a range of practical applications.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
