Magnetoresistance of functionalized carbon nanotubes

Abstract

In present work a novel method for the functionalization of carbon nanotubes is proposed. The magnetoresistance of carbon nanotubes specimens in temperature range from 1.6 K up to 85 K and in magnetic field up to 5 T was investigated. It was shown that the proposed functionalization method does not cause any new defects in structure of carbon nanotubes and does not essentially influence the resistivity of nanotubes. It is revealed the appearance of the charge carriers weak localization and interactions effects for as‐prepared and functionalized carbon nanotubes. On the basis of the experimental data, the explicit type of temperature dependence of wave function phase relaxation time and Fermi‐level energy value for as‐prepared and functionalized carbon nanotube are established.

Supercapacitor and highkproperties of CNT–PbS reinforced quinoxaline amine based polybenzoxazine composites

“…FT-IR (KBr, cm −1 ): 2924, 2857 cm −1 (C–H aliphatic stretch vibration), 1632, 1506 cm −1 (formation of oxazine ring), 1245 cm −1 (Ar–O–C asymmetric stretching), 978 cm −1 (N–C–O stretching), and 1067 cm −1 (Ar–O–C symmetric stretching vibration) (Scheme 3). 56…”

“…FT-IR (KBr, cm À1 ): 2924, 2857 cm À1 (C-H aliphatic stretch vibration), 1632, 1506 cm À1 (formation of oxazine ring), 1245 cm À1 (Ar-O-C asymmetric stretching), 978 cm À1 (N-C-O stretching), and 1067 cm À1 (Ar-O-C symmetric stretching vibration) (Scheme 3). 56 Curing of the benzoxazine monomer Thermal curing of benzoxazine (Scheme 3) toughened with different quantities of CNT-PbS (1, 5 and 10 wt%) was carried out at 60 1C for 6 h. The temperature sequence for polymerization was as follows: 60 1C for 6 h, then heating from 120 1C to 180 1C at 20 1C intervals and curing for 1 h at each temperature, and then post-curing at 250 1C for 4 h in a hot air oven (Scheme 4).…”

Paraffin Wax [As a Phase Changing Material (PCM)] Based Composites Containing Multi-Walled Carbon Nanotubes for Thermal Energy Storage (TES) Development

“…The spectra corresponding to the CNT showed a band of absorption around 3000 cm −1 , which can be accredited to the stretching of the C=C bonds. Bonds corresponding to the stretching of the C-C of the CNT structure were observed at around 1000 cm −1 [19,[21][22][23].…”