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Under ultraviolet (UV) and visible light irradiation, semiconductive photocatalysis is leading to the disinfection and mineralization of organic compounds and other harmful contaminants. Some heavy metals and refractive organic compounds are not transferred to the next step, making mineralization difficult. The current study uses a straightforward hydrothermal technique to synthesise BiVO4/Au/Black phosphorene, a semiconductive composite photocatalyst. Black phosphorene levels in the composite ranged from 1 to 3%. Overall, four samples were created, with the composite with a 3% black phosphorene content being the most effective in the photodegradation of methylene blue. Ultraviolet (UV–vis) and photoluminescence (PL) spectroscopies were employed to assess the optical characteristics of the materials, whereas X-ray diffraction (XRD) and scanning electron microscope (SEM) were utilised to determine the morphology and crystallinity. The bandgap of the produced photocatalysts ranged from 2.5 to 2.25 eV, with decreased recombination when the quantity of black phosphorene in the composite was increased. [ABSTRACT FROM AUTHOR]

In this paper, the bismuth vanadate and the composite of bismuth vanadate BiVO4 with nickel ferrite BiVO4/NiFe2O4 is aimed to be synthesized using hydrothermal method for the effective degradation of methylene blue. The concentration of nickel ferrite is varied from 1 to 5%. The morphological, structural, and the optical properties of the prepared samples are studied using X-ray diffraction (XRD), Scanning electron microscope (SEM), Photoluminescence (PL) spectroscopy, and Ultra-violet (UV) spectroscopy. The photocatalytic activity of the prepared photocatalyst is performed under visible light. The composite of BiVO4/NiFe2O4 4% efficiently degrade 99% of methylene blue after 90 min from 100-ml solution under visible light. This paper explains the synthesis of bismuth vanadate and it is composite with nickel ferrite BiVO4/NiFe2O4 and give information about the structural and morphological of these synthesized materials. [ABSTRACT FROM AUTHOR]