Enhanced magnetoconductivity and electrical property of MWCNT-CdS nanocomposite embedded in polyaniline

M. Goswami, A. Mukherjee, R. Ghosh, S. Basu, A. K. Meikap

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

PANI/MWCNT-CdS nanocomposites with different content of CdS wt.% has been synthesized by the chemical oxidative in-situ polymerization reaction of aniline in the presence of multi-walled carbon nanotubes (MWCNT). TEM, XRD, FTIR, and TGA studies were done for the structural and thermal characterization of the samples respectively. The particle size of CdS nanoparticles distributes in between 2.7 and 4.8 nm. XRD spectrum reveals that the co-existence of MWCNT, CdS in PANI matrix, where CdS forms a hexagonal structure. TGA result shows that nanocomposite becomes more thermally stable with the increase in CdS content. The dc electrical transport property of PANI/MWCNT-CdS nanocomposites has been investigated within a temperature range 77 ≤ T ≤ 300 K. The dc conductivity follows a 3D variable range hopping (VRH) model. A large magnetoconductivity change (19%) is observed for 2 wt% CdS content in PANI/MWCNT-CdS, which is explained by the wave function shrinkage model.

Original languageEnglish
Pages (from-to)37-44
Number of pages8
JournalSolid State Sciences
Volume60
DOIs
StatePublished - 1 Oct 2016
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2016 Elsevier Masson SAS

Keywords

  • Cadmium sulphide
  • Electrical transport
  • Magnetoconductivity
  • Polyaniline
  • X-ray diffraction

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