2.1 To synthesize metal tungstates, metal sulfides and metal sulfide/metal tungstate composites by chemical solution methods such as hydrothermal and co-precipitation
2.2 To investigate the photocatalytic performances and photoelectrochemical (PEC) properties of the synthesized catalysts under visible light illumination
2.3 To study optical, electrochemical and physicochemical properties by XRD, BET, SEM, TEM, XPS, PL, UV-vis diffuse reflectance, etc.