A Simple Two-Phase Route to Silver Nanoparticles/Polyaniline Structures

Abstract

Novel silver nanoparticles/polyaniline composites were obtained through a two-phase water/toluene interfacial reaction. We show that by rigorously controlling the reaction time, different structures of the nanocomposites can be obtained, such as a thin sheet of polyaniline around the silver nanoparticles or a polymer mass with nanoparticles homogeneously embedded within it. Samples were characterized by FT-IR, UV-vis-NIR and Raman spectroscopy, X-ray diffraction, cyclic voltammetry, TEM, and HRTEM. Conductivity and current-voltage characteristics of the nanocomposites were measured, and the results indicate that different properties result from the different structures in which the nanocomposites were formed.

Fabrication of silver nanoparticles/polyaniline composite thin films using Layer-by-Layer self-assembly technique for ammonia sensing

“…Polyaniline is unique among the family of conducting polymer, since polyaniline's conducting properties were discovered in the early 1980s [17], it has been extensively studied for many application due to its ease to synthesize, good environmental stability, high conductivity, low monomer cost and reversible doping/dedoping process [18]. Normally, polyaniline is insoluble in water, but several methods have been developed to improve its solubility such as using sulfonic-acid self-doped polyaniline by reacting polyaniline with fuming sulfuric acid (H 2 SO 4 ·SO 3 ) in order to promote the sulfonation of polyaniline [19].…”

Features of the stabilization of silver nanoparticles by carbonyl-containing polymers

“…Among stabilizers of polymeric type polyacrylic (PAA) and polymethacrylic (PMA) acids and their salts [13,14], polyacrylamide (PAAm) and its derivatives [15,16], polyalkyl(meth)acrylates [17,18], polyacrylonitrile (PAN) [19][20][21], polyamido acids (PAmA) [10], poly(N-vinyl-2-pyrrolidone) (PVP) [22][23][24], polyamides [25], polyamidoamines [26,27], polyurethanes (PU) [28], polyethyleneimine [29,30], polyaniline [31,32], poly(4-vinylpyridine) [33], polyvinyl alcohol (PVA) [34,35], polysaccharides [36,37], polyethers [38,39], polypeptides [40,41], polyether sulfones [42,43], and certain others have proved notably effective.…”

Nanoscale synthesis and optical features of metallic nickel nanoparticles by wet chemical approaches

“…[1,2]. The synthesis of metallic NP with homogenous sizes indicates that control of their size is necessary to evaluate their properties and potential applications in several areas such as microelectronics, optoelectronics, catalysis, photocatalysis, magnetic materials, information storage, among others [3][4][5][6][7][8]. Ni-NPs have also attracted much attention because of their applications as catalysts, conducting and magnetic materials [9][10][11][12].…”