Photocatalytic activity for degradation of methylene blue dye-mediated nanocomposite-copper oxide/graphene oxide preparation from blood solution via hydrothermal method with laser irradiation

Abstract

Blood solution contains an abundant supply of metals, natural polysaccharides, and protein. Copper oxide/graphene oxide nanocomposite (CuO/GO NCs) was created by the hydrothermal method of mixing a blood solution with copper nitrate (Cu2NO3) salt and graphene (G) material, followed by irradiation with a pulse laser ablation (PLA) (Nd-YAG) technique at 250 Mj, 532 nm, 5 cm, and 900 pulses. Paper filters were used to investigate the methylene blue (MB) dye degradation of CuO-GO NCs produced via the PLA process. The structure and optical properties of CuO-GO-NCs were studied and analyzed using X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM) images, transmission electron microscopy (TEM) images, and UV–visible spectra. CuO/GO NCs have a cubic shape with an average crystal size range of 11–52 nm, according to XRD research. An average particle size of 40 nm is created in the surface morphology investigated with FE-SEM, indicating the form of small grains in the nanoparticle. Inside cell morphology examined by TEM, a grain particle size of 40 nm is produced, suggesting that the nanoparticle has a tiny spherical form for CuO NPs, while the morphology of GO NPs has a nanosheet-like structure. CuO/GO NCs have an optical band edge value of 2.5 eV and a wavelength of 352 nm, according to the UV–visible spectrum. Using filter paper containing CuO/GO NCs, the degradation efficiency of MB dye after 50 min in the presence of ambient light in the environment was 99 %. This is a brand-new, rapid, and safe technique that has never been used before.