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

摘要

In the present paper, we demonstrate a versatile approach for the one-pot synthesis of metal oxide yolkgshell nanostructures filled with bimetallic nanOtores. This novel approach is based on the principlesiof hydrophobic nanoreactor soft-templating and is exemplified for the synthesis of various AgAuNpgtin-rich ITO (AgAu@ITOTR) yolkgshell natiomaterials. Hydrophobic narioreactor soft-templatibg thereby takes advantage of polystyrene-block-poly(4-vinylpiridine) inverse 'micelles as two-compartment nanoreactor template, by 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 ITOTR yolk@shell can easily be tuned. The conductivity Of the ITOTR shell and the bimetallic composition of the AuAg nanoparticles, the as-synthesized AuAgNpg ITOTR yolkgshell materials could be used as efficient electrocatalysts for eleCtrochemical glucose oxidation with improved onset potential when- compared to their gold counterpart.