NATO SCIENCE FOR PEACE AND SECURITY PROGRAMME (SPS) UNDER GRANT G5634 „ADVANCED ELECTROOPTICAL CHEMICAL SENSORS” AMOXES

Abstract

In this work, a strategy to prepare CuO/Cu2O/Cu microwires which is fully covered by a nanowire network using a simple thermal oxidation process is developed. These sensors show different dominating gas responses with operating temperatures, to ethanol at 175°C, to 2-propanol at room temperature and 225°C, and to hydrogen gas at ~300°C, respectively. This research shows the importance of the non-planar CuO/Cu2O layered hetero-structure as a bright nanomaterial for the detection of various gases, controlled by the working temperature, and the insight presented here will be of significant value in the fabrication of new sensing devices through simple nanotechnology.