Electrochemical property, antioxidant activities, water treatment and solar cell applications of titanium dioxide – zinc oxide hybrid nanocomposite based on graphene oxide nanosheet

[Display omitted] •Electrochemical properties of GO@TiO2.ZnO studied by cyclic voltammetry analysis.•The photocatalytic activity was revealed with the degradation of mixed dyes.•Antioxidant activity was detected.•Tests of Solar cell applications detected. Antioxidant activity has been detected with the HT22 mouse Hippocampal Neuronal cell line. The photocatalytic properties, electrochemical properties and solar cell applications tests of fabricated (Titanium dioxide (TiO2) nanoparticles-Zinc oxide (ZnO) nanoparticle) hybrid nanocomposite based on Graphene oxide nanosheet (GO) have been studied with different techniques. The electrochemical properties revealed by cyclic voltammetry analysis and the photocatalytic study have been evidenced by the interaction of synthesized nanoflower composite (GO@TiO2·ZnO) with mixed dyes (MB and RhB) and, also, with mixed pesticides (Tobaz and Metalxel). Absorbance intensities of examined organic pollution compounds were considerably quenched, this degradation was recorded by using the steady-state UV–Vis spectrophotometer under visible light source. Effect of fabricated GO@TiO2·ZnO hybrid nanocomposite on the HT22 mouse Hippocampal Neuronal cell line was measured and the reducing power activity showed the potential antioxidant property of the fabricate nanocomposite. The results showed that the fabricated hybrid nanoflower composite on graphene oxide (GO) surface has high photocatalytic efficiency for degradation of mixed organic compounds, this composite has been kept the viability of HT22 cells line. The electron-hole pair recombination was evidenced by photoluminescence (PL) analysis, where the fabricated nanocomposite has high electron transfer, so, the tests of solar cell applications have been revealed and confirmed that the fabricated hybrid nanocomposite has activity towards solar cell applications.