Synthesis of Graphene Supported Pd Nanoparticles for Amperometric NO Gas Sensors

Abstract

Abstract-The Pd Nanoparticles attached on graphene nanosheet (GNS) were synthesized by a simple method. The morphology, structure and component for the a obtained graphene/Pd hybrids have been characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and X-ray photoemission spectroscopy (XPS). The amperometric NO gas sensor was assembled with Graphene/Pd hybrids as the electrode material and 0.5M NaOH solution as electrolyte．It displayed a high sensitivity, together with fairly good detection times and stability. The cross-sensitivities of the sensor to existant gases (CO, H 2 S) are rather small.