Electrochemical performance of heterostructured Au–Pd bimetallic nanoparticles toward As(III) aqueous media

Spherical Au–Pd bimetallic nanoparticles , for the first time, have been elucidated to have a high electrochemical performance toward As(III) by square wave anodic stripping voltammetry . A strong Pd tuned effect on electrochemical performance in the detection of As(III) was found. A high sensitivity of 3.9   μA/ppb with a low limit of detection (LOD) of 2.40   ×   10 −   2   ppb was obtained for Au 1 Pd 3 bimetallic nanoparticle.