title: Synthesis and characterization of polyaniline/Ag-Pt nanocomposite for improved antibacterial activity.
abstract: Polyaniline, polyaniline/Ag-Pt nanocomposite and bimetal (Ag-Pt) colloidal solution were chemically synthesized and characterized by UV-vis, XRD, FT-IR, TGA, HRSEM with EDAX and HRTEM techniques. The results reveal that there was a strong interaction between Ag-Pt nanocomposite and polyaniline chains. This interaction makes only small changes in the backbone chain of polyaniline/Ag-Pt nanocomposite when compared with polyaniline. TGA result revealed greater thermal stability of the composite. HRSEM images showed pebble like morphology for polyaniline/Ag-Pt nanocomposite. The average grain size of Ag-Pt nanoparticle was found to be 2-5 nm, which is confirmed by HRTEM analysis. The polyaniline and polyaniline/Ag-Pt nanocomposite were tested for antibacterial activity. The composite showed improved inhibition efficiency with a maximum zone diameter of 30 ± 1.25 mm against Staphylococcus aureus. This is the first report on the synthesis and its antibacterial activity of polyaniline/Ag-Pt nanocomposite.
authors.affiliation: Department of Industrial Chemistry, School of Chemical Sciences, Alagappa University, Karaikudi 630003, Tamilnadu, India. pboomi1983@gmail.com
authors.forename: Pandi
authors.initials: P
authors.lastname: Boomi
authors.forename: Halliah Gurumallesh
authors.initials: HG
authors.lastname: Prabu
authors.forename: Jayaraman
authors.initials: J
authors.lastname: Mathiyarasu
mesh_terms: D000814:Aniline Compounds / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D000900:Anti-Bacterial Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D053768:Metal Nanoparticles / Q000737:chemistry / Q000648:ultrastructure; D008826:Microbial Sensitivity Tests; D053761:Nanocomposites / Q000737:chemistry* / Q000648:ultrastructure; D010984:Platinum / Q000494:pharmacology*; D012834:Silver / Q000494:pharmacology*; D013056:Spectrophotometry, Ultraviolet; D017550:Spectroscopy, Fourier Transform Infrared; D013211:Staphylococcus aureus / Q000187:drug effects; D013818:Thermogravimetry; D014961:X-Ray Diffraction
chemical_list: D000814:Aniline Compounds; D000900:Anti-Bacterial Agents; C416807:polyaniline; D012834:Silver; D010984:Platinum