Silver-doped polyaniline–polyvinyl chloride nanocomposite films for photocatalytic and antibacterial applications

Abstract

Silver-doped polyaniline–polyvinyl chloride (PVC) nanocomposite films (Ag.PANI–PVC) were synthesized by non-solvent-induced phase inversion method. The nanomaterials were characterized by Fourier transform infrared spectroscopy, X-ray diffraction, ultraviolet, and field emission scanning electron microscopy analysis. Thermal stability and tensile strength of the Ag-doped and undoped PANI–PVC films were studied. The photocatalytic activity of the nanocomposites on methylene blue dye under visible light was evaluated at different initial concentrations of the dye. Silver-doped nanocomposites exhibited excellent photodegradation efficiency. The kinetics of photocatalysis fit well to the pseudo first-order model. Antibacterial performance of the samples was tested against Staphylococcus aureus and Escherichia coli bacteria by agar disc diffusion method. It was observed that Ag.PANI–PVC and Ag.PANI have antagonistic effects against the growth of gram-positive bacteria ( S. aureus) and gram-negative bacteria ( E. coli) with inhibition zones in the range of 10–35 mm.

Progress in Conductive Polyaniline-Based Nanocomposites for Biomedical Applications: A Review

“…PANI nanocomposites have been developed in combination with various antimicrobial agents including silver NPs, TiO 2 , releasable drugs and biomolecules, and the nonleachable compounds, such as quaternary ammonium salts, to prepare a number of antimicrobial devices. 42,62,69,88 PANI nanofibers combined with mupirocin, a topical microbicidal compound, have been prepared via a self-assembly approach for their potential applications as a wound healing dress. 89 It was shown by the agar diffusion method that the antibacterial activity of the PANI-mupirocin was higher than that of the neat PANI due to the release of mupirocin.…”

“…Infections in the treatment of diseases are still challenging, for instance, during or after scaffold transplantation which reduces the efficacy of bone healing. PANI nanocomposites have been developed in combination with various antimicrobial agents including silver NPs, TiO 2 , releasable drugs and biomolecules, and the nonleachable compounds, such as quaternary ammonium salts, to prepare a number of antimicrobial devices. ,,, …”

“…Metal nanomaterials embedded PANI nanocomposites have also been applied to improve the antibacterial and antifungal activity of the nanocomposites. For instance, the conductive polyaniline containing silver showed higher antibacterial activity than the neat PANI. , Though the mechanism of antimicrobial activity of nanomaterials against different microorganisms varies for the types of metals, ions, and species, the dissolution of nanomaterials into ions is often the first step and a common reason for the toxicity of metallic nanostructures (Figure ). For instance, the metal ions can produce hydroperoxide radicals, whereas zinc oxide can form hydroxyl radicals …”

Vitamin C assisted synthesis of rGO–Ag/PANI nanocomposites for improved photocatalytic degradation of pharmaceutical wastes

“…Moreover, plasmonic metal nanoparticles, such as Ag, Au, Cu, Pt, and Ni, modied rGO or PANI were synthesized for improving photocatalytic activity. 20,21 These metal nanoparticles because of their surface plasmon resonance have strong absorption efficiency in the visible region. Among these, Ag NPs due to biocompatibility, reasonable cost, stability, and easy reduction from salts using mild reducing agents have extensively been used to enhance the catalytic activity of the composite.…”

Structural, Thermal, Optical Characterizations of PANI/PMMA Composite Doped by TiO2 as an Application in Optoelectronic Devices

“…In addition, researchers and technologists have been interested in the study and production of nanosize material, particularly, with mounting their applications in optical and electronics manufacturing [17,18]. The procedure of consolidating PMMA, PANI, and metal nanocomposites can assist in the formation of new materials with enhanced optical and structural characteristics [19]. The various traits of Titanium dioxide including its high index of refractive as well as its low cost, chemical stability, nontoxicity, hydrophilicity, high photocatalytic characteristics makes it one of the best semiconductor ceramic material.…”