Magnetic and conducting Fe3O4-polypyrrole nanoparticles with core-shell structure

Jianguo Deng; Yuxing Peng; Chuanlan He; Xingping Long; Pei Li; Albert S.C. Chan

doi:10.1002/pi.1237

Magnetic and conducting Fe₃O₄-polypyrrole nanoparticles with core-shell structure

Jianguo Deng, Yuxing Peng, Chuanlan He, Xingping Long, Pei Li, Albert S.C. Chan

Research output: Journal article publication › Journal article › Academic research › peer-review

155 Citations (Scopus)

Abstract

Magnetic and conducting Fe3O4-polypyrrole nanoparticles with core-shell structure were prepared in the presence of Fe3O4magnetic fluid in aqueous solution containing sodium dodecylbenzene-sulfonate (NaDS) as a surfactant and dopant. Both the conductivity and magnetization of the composites depend strongly on the Fe3O4content and the doping degree. With increase of Fe3O4content in the composite, the conductivity at room temperature decreases, but the saturated magnetization and coercive force increase. Transmission electron microscopy (TEM) images of Fe3O4and Fe3O4-polypyrrole particles show almost spherical particles with diameters ranging from 20 to 30 and 30 to 40 nm, respectively. The thermal stability of Fe3O4-polypyrrole composites is higher than that of pure polypyrrole. Studies of IR, UV-visible and X-ray photoelectron spectroscopy (XPS) spectra suggest that the increased thermal stability may be due to interactions between Fe3O4particles and polypyrrole backbone.

Original language	English
Pages (from-to)	1182-1187
Number of pages	6
Journal	Polymer International
Volume	52
Issue number	7
DOIs	https://doi.org/10.1002/pi.1237
Publication status	Published - 1 Jul 2003

Keywords

Conductivity
Core-shell nanostructure
Ferromagnetic properties
Polypyrrole

ASJC Scopus subject areas

Polymers and Plastics

More information

10.1002/pi.1237

Cite this

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title = "Magnetic and conducting Fe3O4-polypyrrole nanoparticles with core-shell structure",

abstract = "Magnetic and conducting Fe3O4-polypyrrole nanoparticles with core-shell structure were prepared in the presence of Fe3O4magnetic fluid in aqueous solution containing sodium dodecylbenzene-sulfonate (NaDS) as a surfactant and dopant. Both the conductivity and magnetization of the composites depend strongly on the Fe3O4content and the doping degree. With increase of Fe3O4content in the composite, the conductivity at room temperature decreases, but the saturated magnetization and coercive force increase. Transmission electron microscopy (TEM) images of Fe3O4and Fe3O4-polypyrrole particles show almost spherical particles with diameters ranging from 20 to 30 and 30 to 40 nm, respectively. The thermal stability of Fe3O4-polypyrrole composites is higher than that of pure polypyrrole. Studies of IR, UV-visible and X-ray photoelectron spectroscopy (XPS) spectra suggest that the increased thermal stability may be due to interactions between Fe3O4particles and polypyrrole backbone.",

keywords = "Conductivity, Core-shell nanostructure, Ferromagnetic properties, Polypyrrole",

author = "Jianguo Deng and Yuxing Peng and Chuanlan He and Xingping Long and Pei Li and Chan, {Albert S.C.}",

year = "2003",

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TY - JOUR

T1 - Magnetic and conducting Fe3O4-polypyrrole nanoparticles with core-shell structure

AU - Deng, Jianguo

AU - Peng, Yuxing

AU - He, Chuanlan

AU - Long, Xingping

AU - Li, Pei

AU - Chan, Albert S.C.

PY - 2003/7/1

Y1 - 2003/7/1

N2 - Magnetic and conducting Fe3O4-polypyrrole nanoparticles with core-shell structure were prepared in the presence of Fe3O4magnetic fluid in aqueous solution containing sodium dodecylbenzene-sulfonate (NaDS) as a surfactant and dopant. Both the conductivity and magnetization of the composites depend strongly on the Fe3O4content and the doping degree. With increase of Fe3O4content in the composite, the conductivity at room temperature decreases, but the saturated magnetization and coercive force increase. Transmission electron microscopy (TEM) images of Fe3O4and Fe3O4-polypyrrole particles show almost spherical particles with diameters ranging from 20 to 30 and 30 to 40 nm, respectively. The thermal stability of Fe3O4-polypyrrole composites is higher than that of pure polypyrrole. Studies of IR, UV-visible and X-ray photoelectron spectroscopy (XPS) spectra suggest that the increased thermal stability may be due to interactions between Fe3O4particles and polypyrrole backbone.

AB - Magnetic and conducting Fe3O4-polypyrrole nanoparticles with core-shell structure were prepared in the presence of Fe3O4magnetic fluid in aqueous solution containing sodium dodecylbenzene-sulfonate (NaDS) as a surfactant and dopant. Both the conductivity and magnetization of the composites depend strongly on the Fe3O4content and the doping degree. With increase of Fe3O4content in the composite, the conductivity at room temperature decreases, but the saturated magnetization and coercive force increase. Transmission electron microscopy (TEM) images of Fe3O4and Fe3O4-polypyrrole particles show almost spherical particles with diameters ranging from 20 to 30 and 30 to 40 nm, respectively. The thermal stability of Fe3O4-polypyrrole composites is higher than that of pure polypyrrole. Studies of IR, UV-visible and X-ray photoelectron spectroscopy (XPS) spectra suggest that the increased thermal stability may be due to interactions between Fe3O4particles and polypyrrole backbone.

KW - Conductivity

KW - Core-shell nanostructure

KW - Ferromagnetic properties

KW - Polypyrrole

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