In this study, un-doped and different concentrations of silver (Ag)-doped (1.0 wt.%, 3.0 wt.%, 5.0 wt.%, 7.0 wt.%) tin oxide (SnO2) particles were produced by hydrothermal method. For Sn source Tin (II) chloride dihydrate (SnCl2.2H2O) and for Ag source silver nitrate (AgNO3) was used. 1.5 g of SnCl2.2H2O was dissolved in 60 mL of distilled water and strirred with magnetic stirrer for 30 minutes. The pH of the solution was adjusted to 10 by adding NH4OH dropwise and stirred with magnetic stirrer for 15 minutes. The homogeneous solution was sonicated in ultrasonic bath for 5 minutes and transferred to a 90 mL Teflon-linked autoclave to react for 24 h under 200°C. After the hydrothermal reactor was cooled back to room temperature, the solution was filtrated, washed several times with distilled water and dried at 100°C for 2 h in a muffle furnace. The dried particles were heat threated at 600°C for 2 h in a muffle furnace to obtain pure SnO2. The Ag doped SnO2 particles were produced at same procedure used for synthesis of pure SnO2, except for the different amounts of AgNO3 (1.0 wt.%, 3.0 wt.%, 5.0 wt.%, 7.0 wt.%) dissolved in solution. The produced particles structural characterization was done by XRD, FT-IR, FE-SEM and EDS. Pure and Ag-doped SnO2 particles were successfully produced by hydrothermal method. The size of the particles is in nanoscale range. The Ag concentrations were increased with increasing the Ag doping ratio. The band intensities changed as the Ag dopant affected the SnO2 lattice. The lattice dimensions, volumes of unit cells, crystallite size and average crystallites size of produced nano particles were affected by changing the Ag doping ratio. (This study is supported by The Scientific and Technological Research Council of Turkey (TÜBÝTAK) with 119M209 project number.)
Anahtar Kelimeler: Supercapacitor, Silver, Tin Oxide, Nanomaterial, Hydrothermal Method.
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