IR spectra ofWO3, In2O3, Co3O4 and their compositions: (a) WO3, annealing at 600 °С (2 h), (b) WO3, annealing at 600 °С (2 h), after exposure to a gas-air mixture containing 3.6 ppm NO2 (T = 187 °С, t = 30 min.), (c) In2O3, annealing at 600 °С (2 h), (d) In2O3, annealing at 600 °С (2 h), after exposure to a gas-air mixture containing 3.6 ppm NO2 (T = 187 °С, t = 30 min.), (e) Сo3O4, annealing at 450 °С (2 h), (f) Сo3O4, annealing at 600 °С (2 h).

 
 
  Part of: Haiduk YS, Khort AA, Makhavikou MA, Savitsky AA (2019) Structure and gas sensitivity of WO3–In2O3 and WO3–Co3O4 oxide compositions. Modern Electronic Materials 5(3): 115-125. https://doi.org/10.3897/j.moem.5.3.52308