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1 article(s) from Fedawy, Mostafa

Wet chemistry route for the decoration of carbon nanotubes with iron oxide nanoparticles for gas sensing

Hussam M. Elnabawy,
Juan Casanova-Chafer,
Badawi Anis,
Mostafa Fedawy,
Mattia Scardamaglia,
Carla Bittencourt,
Ahmed S. G. Khalil,
Eduard Llobet and
Xavier Vilanova

Beilstein J. Nanotechnol. 2019, 10, 105–118, doi:10.3762/bjnano.10.10

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Figure 1: TEM images for COOH–CNTs (a) before acidic treatment and (b) after acidic treatment.

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Figure 2: Different decoration homogeneity using different solvents, methanol (a), ethanol (b), DMF (c) and a...

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Figure 3: Different decoration densities for different decoration ratios of 1:1 (a), 1:1.3 (b) and 1:1.5 (c).

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Figure 4: High magnification HRTEM images of MWCNTs decorated with Fe₂O₃ nanoparticles. The inset shows the e...

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Figure 5: XPS core level spectra of Fe 2p with a fitting curve for sample C (a), O 1s (b) and C 1s (c) for th...

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Figure 6: XRD pattern for Fe₂O₃ nanoparticles (a) and decorated CNTs with Fe₂O₃ nanoparticles (b).

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Figure 7: Electrical resistance of the samples as a function of time.

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Figure 8: Effect of decoration ratio on the gas sensing performance.

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Figure 9: TEM images showing nanocluster size (a) after calcination for 15 minutes and 30 minutes for a 1:1.5...

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Figure 10: Effect of calcination period on the gas sensing performance.

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Figure 11: Effect of layer homogeneity and thickness on the gas sensing performance.

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Figure 12: Comparison between gas sensors – performance in both dry and humid conditions.

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Published 09 Jan 2019

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