A highly coercive carbon nanotube coated with Ni{sub 0.5}Zn{sub 0.5}Fe{sub 2}O{sub 4} nanocrystals synthesized by chemical precipitation-hydrothermal process
Abstract
Novel magnetic composites (Ni{sub 0.5}Zn{sub 0.5}Fe{sub 2}O{sub 4}-MWCNTs) of multi-walled carbon nanotubes (MWCNTs) coated with Ni{sub 0.5}Zn{sub 0.5}Fe{sub 2}O{sub 4} nanocrystals were synthesized by chemical precipitation-hydrothermal process. The composites were characterized by X-ray powder diffractometer (XRD), X-ray photoelectron spectrometer (XPS), Fourier transform infrared spectroscopy (FTIR), Moessbauer spectroscopy (MS), transmission electron microscopy (TEM), and selected area electron diffraction (SAED), etc. A temperature of about 200 deg. C was identified to be an appropriate hydrothermal condition to obtain Ni{sub 0.5}Zn{sub 0.5}Fe{sub 2}O{sub 4}-MWCNTs, being lower than the synthesis temperature of a single-phase Ni{sub 0.5}Zn{sub 0.5}Fe{sub 2}O{sub 4} nanocrystals. The sizes of Ni{sub 0.5}Zn{sub 0.5}Fe{sub 2}O{sub 4} in the composites were smaller than those of Ni{sub 0.5}Zn{sub 0.5}Fe{sub 2}O{sub 4} nanocrystals in single phase. The composites exhibited more superparamagnetic than Ni{sub 0.5}Zn{sub 0.5}Fe{sub 2}O{sub 4} nanocrystals in their relaxation behaviors. The magnetic properties measured by a vibrating sample magnetometer showed that the composites had a high coercive field of 386.0 Oe at room temperature, higher than those of MWCNT and Ni{sub 0.5}Zn{sub 0.5}Fe{sub 2}O{sub 4} nanocrystals. - Graphical abstract: Novel magnetic composites (Ni{sub 0.5}Zn{sub 0.5}Fe{sub 2}O{sub 4}-MWCNTs) of multi-walled carbon nanotubes (MWCNTs) coated with Ni{sub 0.5}Zn{sub 0.5}Fe{sub 2}O{sub 4} nanocrystals were synthesized bymore »
- Authors:
-
- College of Chemistry and Chemical Engineering, Shenzhen University, Shenzhen 518060 (China)
- College of Material Science and Engineering, State Key Laboratory for Modification of Chemical Fibers and Polymer Material, Donghua University, Shanghai 200051 (China)
- Publication Date:
- OSTI Identifier:
- 21043746
- Resource Type:
- Journal Article
- Journal Name:
- Journal of Solid State Chemistry
- Additional Journal Information:
- Journal Volume: 180; Journal Issue: 11; Other Information: DOI: 10.1016/j.jssc.2007.08.018; PII: S0022-4596(07)00352-0; Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CARBON; ELECTRON DIFFRACTION; FOURIER TRANSFORM SPECTROMETERS; FOURIER TRANSFORMATION; INFRARED SPECTRA; IRON OXIDES; MAGNETIC PROPERTIES; MOESSBAUER EFFECT; NANOTUBES; NICKEL COMPOUNDS; PRECIPITATION; SUPERPARAMAGNETISM; SYNTHESIS; TEMPERATURE RANGE 0273-0400 K; TRANSMISSION ELECTRON MICROSCOPY; VIBRATING SAMPLE MAGNETOMETERS; X-RAY DIFFRACTION; X-RAY PHOTOELECTRON SPECTROSCOPY; ZINC COMPOUNDS
Citation Formats
Huiqun, Cao, Zhu Meifang, Yaogang, Li, Jianhong, Liu, Zhuo, Ni, and Zongyi, Qin. A highly coercive carbon nanotube coated with Ni{sub 0.5}Zn{sub 0.5}Fe{sub 2}O{sub 4} nanocrystals synthesized by chemical precipitation-hydrothermal process. United States: N. p., 2007.
Web.
Huiqun, Cao, Zhu Meifang, Yaogang, Li, Jianhong, Liu, Zhuo, Ni, & Zongyi, Qin. A highly coercive carbon nanotube coated with Ni{sub 0.5}Zn{sub 0.5}Fe{sub 2}O{sub 4} nanocrystals synthesized by chemical precipitation-hydrothermal process. United States.
Huiqun, Cao, Zhu Meifang, Yaogang, Li, Jianhong, Liu, Zhuo, Ni, and Zongyi, Qin. 2007.
"A highly coercive carbon nanotube coated with Ni{sub 0.5}Zn{sub 0.5}Fe{sub 2}O{sub 4} nanocrystals synthesized by chemical precipitation-hydrothermal process". United States.
@article{osti_21043746,
title = {A highly coercive carbon nanotube coated with Ni{sub 0.5}Zn{sub 0.5}Fe{sub 2}O{sub 4} nanocrystals synthesized by chemical precipitation-hydrothermal process},
author = {Huiqun, Cao and Zhu Meifang and Yaogang, Li and Jianhong, Liu and Zhuo, Ni and Zongyi, Qin},
abstractNote = {Novel magnetic composites (Ni{sub 0.5}Zn{sub 0.5}Fe{sub 2}O{sub 4}-MWCNTs) of multi-walled carbon nanotubes (MWCNTs) coated with Ni{sub 0.5}Zn{sub 0.5}Fe{sub 2}O{sub 4} nanocrystals were synthesized by chemical precipitation-hydrothermal process. The composites were characterized by X-ray powder diffractometer (XRD), X-ray photoelectron spectrometer (XPS), Fourier transform infrared spectroscopy (FTIR), Moessbauer spectroscopy (MS), transmission electron microscopy (TEM), and selected area electron diffraction (SAED), etc. A temperature of about 200 deg. C was identified to be an appropriate hydrothermal condition to obtain Ni{sub 0.5}Zn{sub 0.5}Fe{sub 2}O{sub 4}-MWCNTs, being lower than the synthesis temperature of a single-phase Ni{sub 0.5}Zn{sub 0.5}Fe{sub 2}O{sub 4} nanocrystals. The sizes of Ni{sub 0.5}Zn{sub 0.5}Fe{sub 2}O{sub 4} in the composites were smaller than those of Ni{sub 0.5}Zn{sub 0.5}Fe{sub 2}O{sub 4} nanocrystals in single phase. The composites exhibited more superparamagnetic than Ni{sub 0.5}Zn{sub 0.5}Fe{sub 2}O{sub 4} nanocrystals in their relaxation behaviors. The magnetic properties measured by a vibrating sample magnetometer showed that the composites had a high coercive field of 386.0 Oe at room temperature, higher than those of MWCNT and Ni{sub 0.5}Zn{sub 0.5}Fe{sub 2}O{sub 4} nanocrystals. - Graphical abstract: Novel magnetic composites (Ni{sub 0.5}Zn{sub 0.5}Fe{sub 2}O{sub 4}-MWCNTs) of multi-walled carbon nanotubes (MWCNTs) coated with Ni{sub 0.5}Zn{sub 0.5}Fe{sub 2}O{sub 4} nanocrystals were synthesized by chemical precipitation-hydrothermal process. The composites had a high coercive field of 386.0 Oe, higher than those of MWCNT and Ni{sub 0.5}Zn{sub 0.5}Fe{sub 2}O{sub 4} nanocrystals.},
doi = {},
url = {https://www.osti.gov/biblio/21043746},
journal = {Journal of Solid State Chemistry},
issn = {0022-4596},
number = 11,
volume = 180,
place = {United States},
year = {Thu Nov 15 00:00:00 EST 2007},
month = {Thu Nov 15 00:00:00 EST 2007}
}