Physical and electrochemical properties of SnO2-TiO2 nanocomposites prepared with different surfactants

The electrical, optical and electrochemical performance of nanocomposite materials are higher compared to pure metal oxides. Recently, Tin (IV) oxide (SnO2)-Titanium dioxide (TiO2) nanocomposites have been widely studied because of their interesting physicochemical properties. SnO2-TiO2 nanocomposites can be used in as Li-ion batteries, gas sensors and photocatalysts thanks to their structural, optical, electrical and electrochemical properties. In this study, SnO2-TiO2 nanocomposites were obtained by using different surfactants by hydrothermal synthesis method. According to the results obtained, mesoporous SnO2-TiO2 nanocomposites without any impurities were obtained. Electrochemical properties of nanocomposites were investigated with a three-electrode cell system. The experiments were carried out in the potential range of-1 V/0 V and at different scanning rates of as 20-400 mV/s. Measurements were taken for each nanocomposite before and after 500 cycles. Specific capacitances were calculated for a scan rate of 400 mV/s. The highest specific capacitance values were obtained for nanocomposite prepared with Tween 80 as 251.6 F/g and 252.1 F/g for 500 cycles before and after, respectively. In addition, as a result of electrochemical impedance spectroscopy experiments, it was observed that nanocomposites exhibit typical capacitive behavior.