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In the present work, 0–2wt% vanadium (V)-doped SnO2 nanoparticles synthesized by flame spray pyrolysis were systematically studied for H2S detection. The sensing films (∼15–20μm in thickness) were homogeneously prepared by spin coating technique on Au/Al2O3 substrates. Structural characterizations by electron microscopy and X-ray analysis confirmed the formation of agglomerated SnO2 nanoparticles...