5 article(s) from Scardamaglia, Mattia
Figure 1: TEM images for COOH–CNTs (a) before acidic treatment and (b) after acidic treatment.
Figure 2: Different decoration homogeneity using different solvents, methanol (a), ethanol (b), DMF (c) and a...
Figure 3: Different decoration densities for different decoration ratios of 1:1 (a), 1:1.3 (b) and 1:1.5 (c).
Figure 4: High magnification HRTEM images of MWCNTs decorated with Fe2O3 nanoparticles. The inset shows the e...
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...
Figure 6: XRD pattern for Fe2O3 nanoparticles (a) and decorated CNTs with Fe2O3 nanoparticles (b).
Figure 7: Electrical resistance of the samples as a function of time.
Figure 8: Effect of decoration ratio on the gas sensing performance.
Figure 9: TEM images showing nanocluster size (a) after calcination for 15 minutes and 30 minutes for a 1:1.5...
Figure 10: Effect of calcination period on the gas sensing performance.
Figure 11: Effect of layer homogeneity and thickness on the gas sensing performance.
Figure 12: Comparison between gas sensors – performance in both dry and humid conditions.
Figure 1: RRDE voltammograms for oxygen reduction in air-saturated 0.1 M KOH at the Pt–C/GC (curve 1), VA-CCN...
Figure 2: (top) Current density (j) as a function of the time (t) obtained at the Pt–C (green) and the N-grap...
Figure 3: Valence band spectra near the Fermi energy level for pristine, nitrogen functionalized (“as dep RT”...
Figure 4: Natural bond orbital (NBO) population analysis of six different non-metallic heteroatoms in a graph...
Figure 5: Figure 5 (a–c) Conversion of the projectile initial kinetic energy into thermal energy in bulk and nanosyst...
Figure 6: (a) Schematic representation of nitrogen configurations in graphene. Nitrogen atoms given in blue: ...
Figure 7: Measured Dirac point position (blue symbols) at different concentrations of pyridinic and graphitic...
Figure 8: N 1s core level spectra for N-CNT samples grown at (a) 550 °C and (b) 750 °C (N1: pyridinic N, N2: ...
Figure 9: a) Content of the nitrogen species in graphene according to the pyrolysis temperature; b) RRDE volt...
Figure 10: Schematic representation of the molecular oxygen dissociation on nitrogen-doped graphene. Adapted f...
Figure 11: Figure 11 (a) The proposed ORR catalytic cycle. (b) The partial density of states (PDOS) for the p orbital o...
Figure 12: (a) Normalized ratios of nitrogen functionalities as functions of the annealing temperature. (b) Ba...
Figure 13: Structural and elemental characterization of four types of N-HOPG model catalysts and their ORR per...
Figure 1: Mass spectra recorded at a) different gas pressures (5, 10, 15 and 20 mTorr) and at different power...
Figure 2: a) Evolution of the normalized ion signals, extracted from the mass spectra at different plasma pow...
Figure 3: C 1s and F 1s core level spectra acquired from fluorinated vCNT after plasma treatments at differen...
Figure 4: Representative Raman spectra of pristine and fluorinated vCNT (a). Evolution of intensity (I) and a...
Figure 5: (a) Valence band spectra acquired from pristine (black line) and fluorinated vCNT with different fl...
Figure 6: The stability of the fluorination is presented as a function of time for four different samples con...
Figure 1: Temperature-dependent XPS analysis of functionalized vCNTs. (a) C 1s spectra acquired as a function...
Figure 2: Atomic concentration of oxygen (blue squares) and fluorine (red triangles) calculated from XPS anal...
Figure 3: UPS spectra acquired with a photon energy of hν = 31 eV, the red line is the pristine vCNT sample, ...
Figure 4: Raman spectra acquired on pristine, functionalized and thermally treated vCNTs. The spectrum at the...
Figure 1: FE-SEM images of sensor devices made of VA-CNTs decorated with gold nanoparticles with different CN...
Figure 2: (a) Top and (b) side SEM views of the VA-CNTs.
Figure 3: High resolution TEM images of the carbon nanotubes constituting the forests.
Figure 4: Typical Raman spectrum of VA-CNT sensors.
Figure 5: TEM images of VA-CNTs decorated with gold nanoparticles.
Figure 6: XPS survey spectra for pristine VA-CNTs (top, black line) and 150 µm-long VA-CNTs decorated with 6 ...
Figure 7: XPS core level spectra of C 1s (a) and Au 4f (b) recorded on 150 µm-long VA-CNTs decorated with 6 n...
Figure 8: Room temperature detection of NO2 for sensors with different CNT lengths. White pulses indicate the...