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

Figure 3

Nitrogen adsorption isotherm and BJH pore size distribution (inset) of (a) unloaded WO₃ nanorods, (b) 0.25 wt% Nb-loaded WO₃ nanorods, (c) 0.5 wt% Nb-loaded WO₃ nanorods, (d) 1.0 wt% Nb-loaded WO₃ nanorods, and (e) pore volume and specific surface area (SSA_BET) of unloaded and 0.25–1.0 wt% Nb-loaded WO₃ nanorods.

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(b)

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(e)