Yolk@Shell Nanoarchitectures with Bimetallic Nanocores-Synthesis and Electrocatalytic Applications

Amandine Guiet; Tobias Unmüssig; Caren Göbel; Ulla Vainio; Markus Wollgarten; Matthias Driess; Helmut Schlaad; Jörg Polte; Anna Fischer

doi:10.1021/acsami.6b06595

Yolk@Shell Nanoarchitectures with Bimetallic Nanocores-Synthesis and Electrocatalytic Applications

ACS Appl Mater Interfaces. 2016 Oct 19;8(41):28019-28029. doi: 10.1021/acsami.6b06595. Epub 2016 Oct 10.

Authors

Amandine Guiet^{1

2}, Tobias Unmüssig^{3

4}, Caren Göbel¹, Ulla Vainio⁵, Markus Wollgarten⁶, Matthias Driess⁷, Helmut Schlaad⁸, Jörg Polte⁹, Anna Fischer^{1

2

3

4}

Affiliations

¹ Department of Chemistry, Technische Universität Berlin , Straße des 17. Juni 135, Sek TK1, 10623 Berlin, Germany.
² Université Bretagne Loire, Université du Maine, Institut des Molécules et Matériaux du Mans (IMMM), UMR CNRS 6283 , Avenue O. Messiaen, 72085 Le Mans, France.
³ Freiburger Materialforschungszentrum, Albert-Ludwigs-Universität Freiburg , Stefan-Meier-Straße 19, 79104 Freiburg, Germany.
⁴ Institute of Inorganic and Analytical Chemistry, Albert-Ludwigs-University Freiburg , Albertstraße 21, 79104 Freiburg, Germany.
⁵ Institute of Materials Research, Helmholtz-Zentrum Geesthacht , Max-Planck-Straße 1, 21502 Geesthacht, Germany.
⁶ Helmholtz Zentrum Berlin für Materialien und Energie GmbH , Hahn-Meitner-Platz 1, 14109 Berlin, Germany.
⁷ Department of Chemistry - Metalorganics and Inorganic Materials, Technische Universität Berlin , Straße des 17. Juni 135, Sek C2, 10623 Berlin, Germany.
⁸ Institute of Chemistry, University of Potsdam , Karl-Liebknecht-Straße 24-25, 14476 Potsdam, Germany.
⁹ Institute of Chemistry, Humboldt University Berlin , Brook-Taylor Strasse 2, 12489 Berlin, Germany.

PMID: 27556179
DOI: 10.1021/acsami.6b06595

Abstract

In the present paper, we demonstrate a versatile approach for the one-pot synthesis of metal oxide yolk@shell nanostructures filled with bimetallic nanocores. This novel approach is based on the principles of hydrophobic nanoreactor soft-templating and is exemplified for the synthesis of various AgAu_NP@tin-rich ITO (AgAu@ITO_TR) yolk@shell nanomaterials. Hydrophobic nanoreactor soft-templating thereby takes advantage of polystyrene-block-poly(4-vinylpiridine) inverse micelles as two-compartment nanoreactor template, in which the core and the shell of the micelles serve as metal and metal oxide precursor reservoir, respectively. The composition, size and number of AuAg bimetallic nanoparticles incorporated within the ITO_TR yolk@shell can easily be tuned. The conductivity of the ITO_TR shell and the bimetallic composition of the AuAg nanoparticles, the as-synthesized AuAg_NP@ITO_TR yolk@shell materials could be used as efficient electrocatalysts for electrochemical glucose oxidation with improved onset potential when compared to their gold counterpart.

Keywords: AgAu alloy nanoparticles; inverse micelles; nanoreactor; polystyrene-block-poly(4-vinylpyridine); soft-templating; tin-rich ITO; yolk@shell materials.