Complexation-Coprecipitation Synthesis and Characterization of Erbium and Antimony Doped SnO2 Conductive Nanoparticles

Er was used as a dopant for the first time in preparing conductive powder to improve its performance. Er and Sb doped SnO₂ conductive nanoparticles were prepared by the complexation-coprecipitation method with Sn, Sb₂O₃ and Er₂O₃ as the raw materials. Thermal behavior, crystal phase, and structure of the prepared conductive nanoparticles were characterized by TG/DSC, FTIR, XRD and TEM techniques, respectively. The resistivity of the prepared conductive nanoparticles was 0.29 Ω·cm; TG/DSC curves showed that the precursors lost weight completely before 750 °C; FTIR spectrum showed that the vibration peak were wide peak in 711 × 600 cm⁻¹; the Er and Sb doped SnO₂ conductive nanoparticles had intense absorption in 4000 × 1600 cm⁻¹; Er and Sb doped SnO₂ had a structure of tetragonal rutile; complex doping was achieved well by complexation-coprecipitation method and was recognized as replacement doping or caulking doping; TME showed that the particles were weakly agglomerated, the size of the particles calcined at 800 °C ranged approximately from 10 to 30 nm.