Preparation of Poly(diallydimethyl ammonium chloride) (PDDA)/Au Nanocomposite Film by In Situ Electrochemical Reduction and its Electrocatalytic Properties

Hong Wei Shi; Li Zhang; Cong Wang; Ke Ying Zhang

doi:10.4028/www.scientific.net/AMR.123-125.189

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 123-125Preparation of Poly(diallydimethyl ammonium...

Preparation of Poly(diallydimethyl ammonium chloride) (PDDA)/Au Nanocomposite Film by In Situ Electrochemical Reduction and its Electrocatalytic Properties

Abstract:

Nanocomposite films containing Au nanoparticles were fabricated by alternating adsorption of poly(diallydimethyl ammonium chloride) (PDDA) and HAuCl4 using layer-by-layer self-assembly technique and subsequent in situ electrochemical reduction of the AuCl4- ions. The composition and properties of the composite films were characterized by ultraviolet-visible spectroscopy (UV-vis), X-ray photoelectron spectroscopy (XPS), and cyclic voltammetry (CV).The UV-vis characteristic absorbances of PDDA and Au increase almost linearly with the number of bilayers, which suggests a progressive deposition with almost an equal amount of the PDDA and Au in each cycle. X-ray photoelectron spectroscopy further confirms the presence of the main components (such as PDDA and Au) of the nanocomposite films. Furthermore, the nanocomposite films also exhibit good electrocatalytic activity for the oxidation of ascorbic acid (AA), which may be used in electrochemical biosensors.

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Advanced Materials Research (Volumes 123-125)

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189-192

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https://doi.org/10.4028/www.scientific.net/AMR.123-125.189

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Online since:

August 2010

Authors:

Hong Wei Shi, Li Zhang, Cong Wang, Ke Ying Zhang

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Layer-by-Layer Self-Assembly, Multilayered Films, Nanocomposite Film

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