Oxide (Cu2O) nanowires were synthesized on a glass substrate by using anodization method and then their structural, optical, electrical and gas sensing properties were investigated. Copper thin films that coated on glass substrates with evaporation technique were anodized in 0.2 M KOH + 0.1 M NH4F solution for 5 min at room temperature. Then, the crystallization of nanowires was handled via annealingat 280 degrees C under vacuum. The fabricated nanowires were characterized by scanning electron microscope(SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and UV-vis spectrophotometer. The DC electrical measurements of Cu2O nanowires were done in the temperature range of 30 degrees C-200 degrees C under dry air. Cu2O nanowires were tested against to H-2 in dry air ambient depending on concentrationand temperature. It was observed that the ideal working temperature with highest sensor response was determined at 200 degrees C. (C) 2016 Elsevier B.V. All rights reserved.