Effects of Niobium-Loading on Sulfur Dioxide Gas-Sensing Characteristics of Hydrothermally Prepared Tungsten Oxide Thick Film

Figure 1

XRD diffraction patterns of unloaded and 0.25–1.00 wt% Nb-loaded WO₃ sensing films and powders. JCPDS files number 85-2549, 04-0784, and 82-1468 refer to (□) WO₃, (●) Au, and (△) Al₂O₃, respectively.