Synthesis of Carbon Nanofibers with Maghemite via a Modified Sol-Gel Technique
Joint Authors
Bastidas, J. M.
Curiel Alvarez, Mario
Nedev, Nicola
Díaz Silva, Nicolás
Valdez Salas, Benjamin
Stoytcheva, Margarita
Zlatev, Roumen
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-11-09
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Carbon nanohybrid material (CNF/γ-Fe2O3) was obtained via a modified sol-gel technique consisting of two steps: functionalization of carbon nanofibers (CNF) in H2SO4/HNO3 followed by synthesis using Fe(NO3)3∙9H2O.
As a result, the iron content of the CNF/γ-Fe2O3 was increased by more than twice from about 40% to about 87% mass percent, compared to the pristine CNF and oxidized CNF specimens, as proved by energy dispersive X-ray fluorescence.
Scanning electron microscopy images exhibited “cumulus” on the CNF/γ-Fe2O3 specimen surface, which showed the highest iron mass percentage, proved by energy dispersive X-ray spectroscopy.
Transmission electron microscopy images confirmed attachment of γ-Fe2O3 cumulus to the inner and outer surfaces of the CNF walls after synthesis.
The characteristic peaks of Fe 2p3/2 and Fe 2p1/2 appeared in the XPS spectra obtained on CNF/γ-Fe2O3.
In addition, X-ray diffraction (XRD) results indicated formation of γ-Fe2O3 during the synthesis process.
The Raman spectrum of the CNF/γ-Fe2O3 sample displays peaks with positions close to characteristic peaks of highly crystalline and monodisperse maghemite nanocrystallites.
The synthesis of CNF/γ-Fe2O3 leads to an increase in the hydrophilicity of CNF and magnetic properties at room temperature.
American Psychological Association (APA)
Díaz Silva, Nicolás& Valdez Salas, Benjamin& Nedev, Nicola& Curiel Alvarez, Mario& Bastidas, J. M.& Zlatev, Roumen…[et al.]. 2017. Synthesis of Carbon Nanofibers with Maghemite via a Modified Sol-Gel Technique. Journal of Nanomaterials،Vol. 2017, no. 2017, pp.1-10.
https://search.emarefa.net/detail/BIM-1183233
Modern Language Association (MLA)
Díaz Silva, Nicolás…[et al.]. Synthesis of Carbon Nanofibers with Maghemite via a Modified Sol-Gel Technique. Journal of Nanomaterials No. 2017 (2017), pp.1-10.
https://search.emarefa.net/detail/BIM-1183233
American Medical Association (AMA)
Díaz Silva, Nicolás& Valdez Salas, Benjamin& Nedev, Nicola& Curiel Alvarez, Mario& Bastidas, J. M.& Zlatev, Roumen…[et al.]. Synthesis of Carbon Nanofibers with Maghemite via a Modified Sol-Gel Technique. Journal of Nanomaterials. 2017. Vol. 2017, no. 2017, pp.1-10.
https://search.emarefa.net/detail/BIM-1183233
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1183233