Pt-doped In2O3 nanoparticles prepared by flame spray pyrolysis for NO2 sensing

Undoped In2O3 and 0.25–1.00 wt% M (M=Pt, Nb, and Ru)-doped/loaded In2O3 nanoparticles were successfully synthesized in a single-step flame spray pyrolysis technique using indium nitrate, platinum (II) acetylacetonate, niobium ethoxide, and ruthenium (III) acetylacetonate precursors. The undoped In2O3 and M-doped In2O3 nanoparticles were characterized by Brunauer–Emmett–Teller (BET) analysis, X-ray diffraction (XRD), and scanning and transmission...