Abstract
Urchin-like Ag nanowires were prepared by reacting AgNO 3 (aq) with Cu metal in the presence of cetyltrimethylammonium chloride and HNO 3 (aq) on a screen printed carbon electrode at room temperature. The diameters of the nanowires were about 100 nm, while the lengths were up to 10 μm. Cyclic voltammetric experiments using the Ag nanowires as the working electrode showed electrocatalytic H 2 O 2 reduction. The electrode exhibited a high sensitivity of 4705 μAmM -1 mg -1 cm -2 from 50 μMto 10.35 mM and a measurable detection limit of 10 μM in amperometric detection. This is the first report on Ag NWs for non-enzymatic H 2 O 2 sensing. © 2012 The Chemical Society Located in Taipei & Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.