An Efficient Electrochemical Sensor Driven by Hierarchical Hetero-Nanostructures Consisting of RuO(2) Nanorods on WO(3) Nanofibers for Detecting Biologically Relevant Molecules

By means of electrospinning with the thermal annealing process, we investigate a highly efficient sensing platform driven by a hierarchical hetero-nanostructure for the sensitive detection of biologically relevant molecules, consisting of single crystalline ruthenium dioxide nanorods (RuO(2) NRs) directly grown on the surface of electrospun tungsten trioxide nanofibers (WO(3) NFs). Electrochemical measurements reveal the enhanced electron transfer kinetics at the prepared RuO(2) NRs-WO(3) NFs hetero-nanostructures due to the incorporation of conductive RuO(2) NRs nanostructures with a high surface area, resulting in improved relevant electrochemical sensing performances for detecting H(2)O(2) and L-ascorbic acid with high sensitivity.