Premium
Facile one step‐synthesis and characterisation of high aspect ratio core‐shell copper‐polyaniline nanowires
Author(s) -
Sarvi Ali,
Gelves Genaro A.,
Sundararaj Uttandaraman
Publication year - 2014
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.21973
Subject(s) - polyaniline , nanowire , copper , materials science , core (optical fiber) , shell (structure) , nanotechnology , chemical engineering , metallurgy , composite material , polymer , engineering , polymerization
Metal nanowire/polyaniline core‐shell nanoparticles have significant potential for the development of materials for electrostatical dissipation, electromagnetic interference shields, chemical and biological sensors, charge and hydrogen storage. In this study, the synthesis of novel core‐shell nanostructures of polyaniline‐coated copper nanowires (PANI/CuNWs) is presented. CuNWs of 25 nm in diameter and several microns in length were synthesised using hard template method and were subsequently coated with doped or undoped polyanilines to obtain high aspect ratio core‐shell nanoparticles. SEM, TEM, XPS and electrical conductivity measurements were used to characterise these novel nanomaterials. TEM characterisation showed a smooth polyaniline nanocoating of about 6 nm in thickness over the CuNW surface. The thickness of the coating can be controlled by changing PANI concentration in the solution. XPS results indicate that spontaneous adsorption of polyaniline results from the strong surficial interaction between copper atoms at the nanowire surface and imine groups in the polyaniline backbone.