Simple route for intermatrix synthesis of polymer stabilized core-shell metal nanoparticles for sensor applications

✍ Scribed by Muraviev, D. N. ;Macanás, J. ;Esplandiu, M. J. ;Farre, M. ;Muñoz, M. ;Alegret, S.

• Publisher: John Wiley and Sons
• Year: 2007
• Tongue: English
• Weight: 258 KB
• Volume: 204
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/pssa.200675323

✦ Synopsis

Abstract

In this paper we report the novel simple route for the inter‐matrix synthesis and characterization of Polymer Stabilized Metal Nanoparticles (PSMNPs) with core‐shell structure. The proposed approach is based on the use of functionalized polymeric membranes (FPM) as a nanoreactor for both to synthesize and to characterize the composition and morphology of PSMNPs. The desired functionalization is achieved by the chemical grafting of the desired functional groups (sulphonic in our case) to the polymeric matrix. The proposed approach is illustrated by the results obtained by studying the intermatrix synthesis of Pt@Cu‐core‐shell PSMNPs of different compositions in sulfonated poly(ether ether ketone) (SPEEK) membranes. The electrochemical response of amperometric sensors prepared by using SPEEK‐Pt@Cu‐PSMNP nanocomposite membranes as a sensing element has been shown to increase with the loading of the shell‐forming metal (Pt). The presence of Pt@Cu‐PSMNC inside the membrane not only substantially improves the electric conductivity of the polymer, but also testifies to manifestation of clearly pronounced strong electrocatalytic activity of Pt@Cu‐PSMNC towards analyte under study (H~2~O~2~). (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)