Polyaniline/Ag nanocomposite synthesized by using aniline as dispersant and stabilizer of nanosilver sol

Abstract

Polyaniline/silver (PANI/Ag) nanocomposite was successfully prepared by in‐situ polymerization from nanosilver sol using aniline (An) as both dispersant and stabilizer and characterized by FT‐IR, XRD SEM, TEM and electrochemical methods, respectively. The results showed that core‐shelled composite particles of less than 100 nm were synthesized with PANI as shell formed around a core of silver nanoparticles at higher aniline levels. Compared to pure PANI, PANI/Ag nanocomposites have higher electrical conductivity (65.98 S/cm) and current response and capacitance as well. Potentio dynamic polarization showed the anodic shifting of zero current potential and a lower exchange current density for the PANI/Ag composite. Compared with PANI, the PANI/Ag nanocomposite is a promising candidate for coatings with improved anti‐corrosion performance. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

Synthesis of novel poly(1‐naphthylamine)‐silver nanocomposites and its catalytic studies on reduction of 4‐nitrophenol and methylene blue

“…Reflections from PNA are relatively broad suggesting amorphous nature of the polymer and becomes insignificant at higher silver loading. Similar reports are found in the literature regarding PAni‐silver composites . Average size of the silver crystallite is determined using Scherrer equation, and it is found to be 31.15, 19.78, and 21.89 nm for PNA‐5Ag, PNA‐10A, and PNA‐20Ag, respectively.…”

“…Many methods have been reported for incorporating AgNPs into PAni matrix, and it is established that the synthesis method is critical in deciding the size, distribution, and properties of composite material. The strategies involving in‐situ polymerization, reduction of silver ions by PAni and oxidation of aniline by silver nitrate have been well established for the preparation of PAni‐Ag composites . Among those techniques, the single step synthesis which involves oxidative polymerization of monomer using silver salt with concomitant reduction of silver ion to metallic silver is attractive as it generally results in the homogeneous distribution of AgNPs over the conducting PAni framework.…”

Towards more active and stable PdAgCr electrocatalysts for formic acid electrooxidation: The role of optimization via response surface methodology

“…For Pd 50 Ag 50 /MWCNT and Pd 65.6 Ag 33.6 Cr 0.80 /MWCNT, the peaks around 0.53 V in the forward scan indicate the oxidation of Ag, and the peaks at ca. 0.40 V and 0.53 V potential are assigned to AgO and PdO reduction, respectively. Furthermore, the higher electrochemical surface area of Pd 65.6 Ag 33.6 Cr 0.80 /MWCNT than Pd 50 Ag 50 /MWCNT and Pd/MWCNT was observed from Figure .…”

Soluble, Antibaterial, and Anticorrosion Studies of Sulfonated Polystyrene/Polyaniline/Silver Nanocomposites Prepared with the Sulfonated Polystyrene Template

“…[17][18][19][20] It exhibits a wide range of potential applications in various fields such as electronic and electrochromic equipments, electromagnetic shielding, photochemical cells, separation membranes, biosensors and anticorrosion coatings due to these interesting properties. [23][24][25] However, the obtained polyaniline/silver (PANI/Ag) composites suffer from poor processabilities because PANI is hardly soluble in common organic solvents and water. [23][24][25] However, the obtained polyaniline/silver (PANI/Ag) composites suffer from poor processabilities because PANI is hardly soluble in common organic solvents and water.…”