Preparation of agcl/polyaniline nanocomposite in polyvinylalcohol matrix and its electrocatalytic activity

Abstract

AgCl/polyaniline (PANI) nanocomposite was successfully synthesized in polyvinyl alcohol (PVA) matrix via a two-stage process. Firstly, positively-charged Ag nanoparticles (NPs) were prepared in the presence of 4-aminothiophenole (4-ATP) as stabilizer. Then, polymerization of aniline was carried out in PVA matrix in the presence of Ag NPs, HCl, and ammonium persulfate as oxidant. HCl solution played an important role in the preparation of resulted nanocomposite. Removal or changing of acidic medium to camphorsulfonic acid influenced on the structure and morphology of obtained composites. The composites were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, energy-dispersive X-ray spectroscopy, ultraviolet-visible spectra, and Fourier transform infrared spectroscopy. Moreover, AgCl/PANI/PVA nanocomposite was immobilized on the surface of a glassy carbon electrode and showed enhanced electrocatalytic activity for the oxidation of dopamine (DA) in a neutral solution. The peak currents of differential pulse voltammograms of DA increased linearly with concentration in the ranges of 80-250 lM DA and the detection limit for DA was 17.2 lM.

Stable plasmonic Ag/AgCl–polyaniline photoactive composite for degradation of organic contaminants under solar light

“…[14][15][16][17] Ag@AgCl modied by PANI has been successfully prepared by other researchers and was used in different applications such as electronic, optics, electrocatalysis, and sensors. 18 However, this composite was not investigated as photocatalyst for water treatment, which might be a meaningful work to carry out. Thereby, Ag/AgCl-PANI composite was prepared with various amounts of PANI by depositionprecipitation reaction followed by photo-reduction method in this work.…”