Investigation of WS2-SnO2 photoelectrochemical nanoheterostructures obtained by the method of electric spark erosion

This paper presents the results of studies of physicochemical and photoelectrochemical properties of WS2-SnO2 nanoheterostructures obtained by electrospark erosion. The X-ray phase analysis data showed the presence of hexagonal WS2 (JCPDS-ICDD 87-2417) and orthorhombic SnO2 (JCPDS- ICDD 78-1063) phases in the final synthesis products, which agrees well with the results of electron diffraction study in the selected region. Using transmission electron microscopy and energy dispersive spectroscopy, it was found that the obtained materials were WS2 nanoparticles with 40-60 nm particle size adhered to the surface of SnO2 nanoparticles with 10-20 nm particle size.