Enhancing the photoinduced via a novel nano-combination of terbium oxide and nickel oxide on graphene oxide surface: Cytotoxicity and water treatment

Abstract

The target is a novel nano-combination membrane (NCM) via Terbium oxide nanoparticles (Tb₂O₃ NPs) and nickel oxide (NiO NPs) which integrates on the graphene oxide (GO) surface. The NCM is characterized by different tools such as X-ray diffraction (XRD), UV-visible spectrophotometer (UV-vis), and Scanning electron microscopy (SEM)for removing organic pollutants. The precipitation method has been applied for fabricating the selected metal oxides (MOs), where the terbium chloride and nickel chloride are used as precursors for fabricating the metal oxides (MOs) NPs that formed with potassium hydroxide in the solution. The photocatalytic activity of fabricated NCM has been noticed with the quenching of mixed Rhodamine B (RhB) and methyl orange (MO) dyes at various times for water treatment. UV-vis spectra confirmed the excellent efficiency against organic pollution degradation. After exposure to the light for 100 min, the photodegradation efficacy of MB and RhB appeared at 46.88 % and 16.4 %, with GO@Tb2O3, by GO@Tb2O3.NiO the efficiency was 54.8 % and 32.3 % after 100 min, while GO@NiO has degradation efficiency at 43 % and 17.3 % for MB and RhB respectively. The cytotoxicity of NCM is detected with hepatocellular carcinoma (HepG2) and breast adenocarcinoma (MCF-7), the result illustrated that the fabricated NCM does not affect the cancer cells with the 10 µL, but with the higher concentration of 100 µL, the cell lysis was observed. The results of photocatalytic and cytotoxicity are recommended using these fabricated NCM in water treatment.

Keywords: Cytotoxicity; Electrochemical property; Nickel oxide; Photocatalytic; Terbium oxide.