Improved filling rate and enhanced magnetic properties of Fe-filled carbon nanotubes by annealing and magnetic separation

Gui, Xuchun; Wei, Jinquan; Wang, Kunlin; Wang, Wenxiang; Lv, Ruitao; Chang, Jian-Guo; Kang, Feiyu; Gu, Jing; Wu, Dehai

doi:10.1016/j.materresbull.2008.01.028

Cited by 28 publications

(28 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The production of a significant amount of Fe nanowires in CNTs is expected to improve the reflection loss by acting as a magnetic component in the composite materials. Selected area electron diffraction and X-ray diffraction patterns of the as grown Fe-filled CNTs indicated the coexistence of α-Fe and γ-Fe [13,14] . After an annealing process for 15 h at 650℃ in argon atmosphere, γ-Fe nanowires were transformed to α-Fe without any structural change on CNTs themselves [14] .…”

Section: Resultsmentioning

confidence: 98%

“…Selected area electron diffraction and X-ray diffraction patterns of the as grown Fe-filled CNTs indicated the coexistence of α-Fe and γ-Fe [13,14] . After an annealing process for 15 h at 650℃ in argon atmosphere, γ-Fe nanowires were transformed to α-Fe without any structural change on CNTs themselves [14] . Figure 1(b) is a TEM image of the MWCNTs sample of about 30-50 nm thick and 2 μm long.…”

Section: Resultsmentioning

confidence: 98%

“…The average diameter of the CNTs is about 35 nm. Fe nanowires (>2 μm long) filled in CNTs have a diameter distribution of 25-30 nm with a filling rate of about 35 wt% [14] . The production of a significant amount of Fe nanowires in CNTs is expected to improve the reflection loss by acting as a magnetic component in the composite materials.…”

Section: Resultsmentioning

confidence: 99%

“…[13]. The annealed Fe-filled CNTs were obtained by annealing as-grown Fe-filled CNTs at 650℃ for 15 h in Ar atmosphere [14] . The MWCNTs were prepared by an improved chemical vapor deposition (CVD) method [15] .…”

Section: Methodsmentioning

confidence: 99%

See 3 more Smart Citations

Microwave absorbing properties and magnetic properties of different carbon nanotubes

Gui

Wang

Wei

et al. 2009

Sci. China Ser. E-Technol. Sci.

Self Cite

View full text Add to dashboard Cite

The microwave absorbing properties and magnetic properties of as-grown Fe-filled carbon nanotubes (CNTs), annealed Fe-filled CNTs, and multi-walled CNTs were studied. Vibrating sample magnetometer results showed that the annealed Fe-filled CNTs have the weakest coercivity and strongest saturation magnetization among the three types CNTs, due to the presence of more ferromagnetic α-Fe nanowires.After annealing, the values increased to 291.0 Oe and 28.0 emu/g and the samples showed excellent microwave absorbing properties. The reflection loss was over 5 dB between 11.6 GHz and 18 GHz with a maximum value of 10.8 dB for annealed Fe-filled CNTs (1.1 wt%)/epoxy composite. carbon nanotubes, microwave absorbing properties, magnetic properties

show abstract

Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Microwave absorbing properties and magnetic properties of different carbon nanotubes

Gui

Wang

Wei

et al. 2009

Sci. China Ser. E-Technol. Sci.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The CNTs can be magnetic if they contain iron nanoparticles inside as a result of the incorporation of Fe-containing catalysts during their production [4]. It is hoped that once the nanoparticles are integrated into the polymer matrix that all of the NPs properties will be transferred to the polymer, resulting in its antibacterial and magnetic properties.…”

Section: Introductionmentioning

confidence: 99%

Nanocomposites with antibacterial properties using CNTs with magnetic nanoparticles

Ortega¹,

Kharissova²,

Dias³

et al. 2016

Nanosystems: Phys. Chem. Math.

View full text Add to dashboard Cite

In this work, multiwall carbon nanotubes (MWCNT) were functionalized with silver nanoparticles using two different methods of incorporation. Characterization of these composites was done using Raman spectroscopy and Transmission Electron Microscopy (TEM) and the antibacterial properties were measured using method of dilution and plating. The four-point probe method was used to measure the resistivity of the nanocomposite thin films made via the spin coating method.

show abstract

Facile, soot free approach toward synthesis of carbon nanoropes via chemical vapor deposition of acetylene in the presence of MnFe2O4 coated on stainless steel

Dhand

Bharadwaj

Amareshwari

et al. 2015

Applied Surface Science

View full text Add to dashboard Cite

Improved filling rate and enhanced magnetic properties of Fe-filled carbon nanotubes by annealing and magnetic separation

Cited by 28 publications

References 18 publications

Microwave absorbing properties and magnetic properties of different carbon nanotubes

Microwave absorbing properties and magnetic properties of different carbon nanotubes

Nanocomposites with antibacterial properties using CNTs with magnetic nanoparticles

Facile, soot free approach toward synthesis of carbon nanoropes via chemical vapor deposition of acetylene in the presence of MnFe2O4 coated on stainless steel

Contact Info

Product

Resources

About