ENHANCED ETHANOL SENSING PERFORMANCES OF MULTIPLE NETWORKED Nb2O5 NANOROD SENSORS FUNCTIONALIZED WITH Pd AND Au NANOPARTICLES
Abstract
Over the past decade, functionalization with bimetallic catalysts have been studied owing to their excellent catalytic activities for various reactions, whereas few studies have been performed on cofunctionalization with two different types of metal catalysts despite its simplicity. This study examined the sensing performances of Nb2O5 nanorods cofunctionalized with Pd and Au nanoparticles. Pd, Au-cofunctionalized Nb2O5 nanorods were prepared by a hydrothermal technique. The Nb2O5 nanorods cofunctionalized with Pd and Au nanoparticles showed far stronger response to ethanol gas than the Pd or Au-functionalized counterpart. The origin for the enhanced response of the Pd, Au-cofunctionalized Nb2O5 nanorods is discussed.
