Template-assisted synthesis of rough Ag nanorods and their application for amperometric sensing of H2O2

Silver nanorods (Ag NRs) with rough sidewalls were successfully obtained via extremely simple template-assisted electrochemical deposition followed by selective dealloying. Ag Zn NRs with an average diameter of similar to 250 nm and the atomic ratio of about 1:1 were synthesized inside the nanochannels of a polycarbonate membrane. A chemical etching of Zn in a sulfuric acid solution led to the formation of NRs with smaller diameters, rough sidewalls, and much lower Zn content. Such kind of a material exhibited quite promising electrocatalytic properties toward reduction of hydrogen peroxide and can be used as an amperometric sensor for the detection and determination of H2O2. (C) 2017 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.