The Morphologies of Pt Decorated on PANI Membrane and Effects on Glucose Biosensor

Cang Wang; Da Jing Chen; Min Pan; Yu Quan Chen; Wen Jun Guan; Wei Chen

doi:10.4028/www.scientific.net/AMR.646.101

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The Morphologies of Pt Decorated on PANI Membrane and Effects on Glucose Biosensor

Abstract:

This paper mainly studies on the morphologies of Platinum(Pt) nanoparticles decorated on polyanilene(PANI)and their influence on the sensitivity of glucose biosensor. Seldom researches were carried on the morphologies of Pt nanoparticles and the optimization of parameters. Compared by scanning electron microscopy(SEM), cyclic voltammetry(CV) and glucose current response, Pt completely wrapped PANI nanofibers shows better electrochemical stability, sensitivity and larger catalytic area than different kinds of Pt decorated PANI membranes. Pt completely wrapped PANI nanofibers are provided by electrochemical deposition Pt nanoparticles on PANI nanofibers under a special voltage. The average diameter of nanofibers which form porous Pt/PANI membrane is 100 nm. CVs of this membrane become stable in seven circles and provide a higher current peak which indicates larger catalytic area. The sensitivity indicated by current-time glucose response is several times of the other membranes.