A facile route to synthesize core/shell structured carbon/magnetic nanoparticles hybrid and their magnetic properties

Journal Article · Wed Jul 15 00:00:00 EDT 2015 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2015.03.027· OSTI ID:22475821

Qi, Xiaosi ^[1]; Xu, Jianle ^[1]; Zhong, Wei ^[2]; Du, Youwei ^[2]

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1. College of Science, Guizhou University, Guiyang 550025 (China)
2. Nanjing National Laboratory of Microstructures and Jiangsu Provincial Laboratory for NanoTechnology, Nanjing University, Nanjing 210093 (China)

Graphical abstract: Controllable synthesis of core/shell structured carbon/magnetic nanoparticles hybrid and their tunable magnetic properties. - Highlights: • The paper reports a simple route for core/shell structured carbon/magnetic nanoparticles hybrid. • By controlling the temperature, Fe{sub 3}O{sub 4}@CNCs, Fe@HCNTs and Fe@LCNTs were produced selectively. • The magnetic properties of the obtained core/shell structured hybrid could be tuned effectively. - Abstract: By controlling the pyrolysis temperature, core/shell structured Fe{sub 3}O{sub 4}/carbon nanocages, Fe/helical carbon nanotubes and Fe/low helicity of carbon nanotubes could be synthesized selectively over Fe{sub 2}O{sub 3} nanotubes generated by a hydrothermal method. The transmission electron microscopic and scanning electron microscopic investigations revealed that the efficiency of generating core/shell structured hybrid was high, exceeding 90%. Because of the magnetic nanoparticles tightly wrapped in graphitic layers, the obtained core/shell structured hybrids showed high stability and good magnetic properties. And the magnetic properties of the obtained core/shell structured hybrid could be tuned by the decomposition temperature and time. Therefore, a simple, inexpensive and environment-benign route was proposed to produce magnetism-tunable core/shell structured hybrid in large quantities.

• OSTI ID: 22475821
• Journal Information: Materials Research Bulletin, Vol. 67; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
CARBON NANOTUBES
EFFICIENCY
GRAPHITE
HELICITY
HYDROTHERMAL SYNTHESIS
IRON OXIDES
LAYERS
MAGNETIC PROPERTIES
MAGNETISM
NANOPARTICLES
PYROLYSIS
SCANNING ELECTRON MICROSCOPY
SHELLS
STABILITY
TRANSMISSION
TRANSMISSION ELECTRON MICROSCOPY