Please use this identifier to cite or link to this item:
Type: Artigo
Title: Enhanced Magnetic Performance Of Iron Oxide Nanoparticles Anchored Pristine/ N-doped Multi-walled Carbon Nanotubes By Microwave-assisted Approach
Author: Kumar
Rajesh; Singh
Rajesh K.; Tiwari
Vidhu S.; Yadav
Amarjeet; Savu
Raluca; Vaz
Alfredo R.; Moshkalev
Stanislav A.
Abstract: We report the facile and easy synthesis process of iron oxide (Fe3O4) nanoparticles (Fe3O4 NPs) modified surface of carbon nanotubes (CNTs) and their magnetic properties. The partially aligned multi-walled carbon nanotubes (MWCNTs) and nitrogen-doped multi-walled carbon nanotubes (CNx-MWCNTs) were synthesized through chemical vapor deposition (CVD) method. In next step, synthesized MWCNTs and CNx-MWCNTs were anchored with Fe3O4 NPs using microwave (MW) irradiation. The size of anchored Fe3O4 NPs on surface of Fe@MWCNTs and Fe@CNx-MWCNTs were 5-15 and 5-10 nm, respectively. The investigation results of magnetic properties revealed that the saturation magnetization of Fe@CNx-MWCNTs was improved after N-doping and Fe@CNx-MWCNTs showed superior magnetization behaviour than Fe@MWCNTs. The saturation magnetization value increases from 26.1 to 30.4 emu/g after N-doping. The improved magnetic performance of Fe@CNx-MWCNTs may be due to the induced structural defect on the surfaces which supports Fe3O4 NPs to attach and consequently improves the saturation magnetization. (C) 2016 Elsevier B.V. All rights reserved.
Subject: Chemical Vapor Deposition
Microwave Irradiation
Surface Structural Defect
Fe3o4 Nanoparticles
Magnetic Performance
Editor: Elsevier Science SA
Rights: fechado
Identifier DOI: 10.1016/j.jallcom.2016.11.010
Date Issue: 2017
Appears in Collections:Unicamp - Artigos e Outros Documentos

Files in This Item:
File SizeFormat 
000391817600224.pdf2.97 MBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.