TY - JOUR AU - Ovodok, E. AU - Ivanovskaya, M. AU - Kotsikau, D. AU - Kormosh, V. AU - Pylyp, P. AU - Bilanych, V. PY - 2021/10/04 Y2 - 2024/03/29 TI - Structural Characterization and Gas Sensing Properties of Nano-Sized Tin Dioxide Material Synthesized from Tin(II) Sulfate JF - Ukrainian Journal of Physics JA - Ukr. J. Phys. VL - 66 IS - 9 SE - Semiconductors and dielectrics DO - 10.15407/ujpe66.9.803 UR - https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2020332 SP - 803 AB - <p>Structural features, surface condition, and gas-sensing properties of the nanocrystalline SnO<sub>2</sub> powders synthesized from SnSO<sub>4</sub> precursor by different methods have been studied. XRD, TEM, BET, and FTIR methods were used for the samples characterization. The gas sensors were fabricated by the thick-film technology from the synthesized SnO<sub>2</sub> powders. The responses of the sensors toward CO and CH<sub>4</sub> gases are measured. It is revealed that the preoxidation of SnSO<sub>4</sub> powder with concentrated sulfuric acid before the hydrolysis results in the lower particle size, higher surface area, improved adsorption activity, and higher sensitivity to reducing gases (CO, CH<sub>4</sub>) of the synthesized SnO<sub>2</sub> materials, than in the case of the SnO<sub>2</sub> materials obtained without the preoxidation stage.</p> ER -