One-Step Synthesis of Different Silver-Polyaniline Composite Morphologies for Enzymless Hydrogen Peroxide Detection. Issue 7 (1st January 2015)

• Record Type: Journal Article
• Authors: Lorestani, Farnaz; Nia, Pooria Moozarm; Alias, Y.; Manan, Ninie S. A.
• Is Part Of: Journal of the Electrochemical Society. Volume 162:Issue 7(2015)
• Page Start: B193
• Page End: B200
• Publication Date: 2015-01-01
• Subjects: Hydrogen Peroxide -- Polyaniline -- Silver; Electrochemistry -- Periodicals; 541.3705
• DOI: 10.1149/2.0981507jes
• Languages: English
• ISSNs: 0013-4651

Abstract

Abstract : Silver nanoparticle-decorated polyaniline nanorods (AgNPs-PANINRs) and silver nanoparticle-decorated polyaniline nanotubes (AgNPs-PANINTs) composites were prepared through a one-step modified methods by immobilizing a mixture of AgNO3, aniline and ammonium per sulfate (APS) as an oxidant without adding any extra acids, templates or surface modifiers. The composites were characterized by using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). The reactivity of the prepared composites towards hydrogen peroxide (H2 O2 ) was analyzed using cyclic voltammetry and chronoamperometry. The AgNPs-PANINRs composite exhibits better electrochemical performance than the AgNPs-PANINTs composite due to higher content of silver nanoparticle (AgNPs). The sensor has a fast amperometric response time which less than 3 s. The detection limit and limit of quantification (S/N = 3) of two linear range (low and high concentration of H2 O2 ) are estimated as 0.13 μM and 0.45 μM and 0.33 μM and 1.12 μM, respectively.