Facile Synthesis and Electrical Conductivity of Carbon Nanotube Reinforced Nanosilver Composite

Abstract

Metal matrix nanocomposites reinforced with carbon nanotubes (CNTs) have become popular in industrial applications. Due to their excellent thermophysical and mechanical properties, CNTs are considered as attractive filler for the improvement in properties of metals. In the present work, we have synthesized noncovalently functionalized CNT reinforced nanosilver composites by using a modified molecular level mixing method. The structure and morphology of nanocomposites are characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and energy dispersive spectroscopy. The electrical conductivity of silver-CNT nanocomposites measured by the four-point probe method is found to be more than that of the pure nanosilver. The significant improvement in electrical conductivity of Ag/CNT nanocomposites stems from homogenous and embedded distribution of CNTs in a silver matrix with intact structure resulting from noncovalent functionalization. The low temperature sintering also enhances the electrical conductivity of Ag/CNT nanocomposites.

Chemical Synthesis, Functionalization and Characterization of Multiwalled Carbon Nanotubes

“…Functionalized MWCNTs showed only one low intensity peak at 2θ= 26.5 o indicating smaller crystallinity. Similar results were also obtained by many researchers [10][11][12][13][14][15][16].…”

Thermal expansion behavior of CNT/Ag nanocomposite

“…The synthesis process is called the modified molecular level mixing method,a se lucidatedi naprevious work [11]. CNTs of required weight werea dded to 200 ml ethanol and sonicated for 4halong with SDS to get astablesuspension of CNTs.…”