Synthesis of the Ag-AgCl0.5Bro0.5/BiOCl0.5Br0.5 composite for enhanced photocatalytic activity of degradation of oil field pollutant through synergistic effect of ag-bi based solid solution

The composite photocatalysts and solid solution photocatalysts have been shown to have improved photo catalytic performance, which caught researcher's eyes. In this paper, the polycomplex Ag-AgCl0.5Br0.5/BiOCl0.5Br0.5 was formed by photo-reduction method. X-ray diffraction, high-resolution transmission electron microscopy, scanning electron microscopy and SEM-mapping, and X-ray photoelectron spectroscopy was used to confirm the structure, morphology and element information, surface valence states of Ag-AgCl0.5Br0.5/BiOCl0.5Br0.5, respectively. Under ultraviolet visible and visible irradiation, the Ag-AgCl0.5Br0.5/BiOCl0.5Br0.5 exhibits excellent photocatalytic activity for the degradation acrylamide and bisphenol A and this is superior to that of BiOCl0.5Br0.5 and Ag-AgCl0.5Br0.5. The PL spectra, photocurrent response and electrochemical impedance further confirmed the remarkable photocatalytic activity of Ag-AgCl0.5Br0.5/BiOCl0.5Br0.5, the recycle experiment were conducted to reveal the stability and reusability. The trapping experiments and photocatalytic mechanism confirmed Ag-AgCl0.5Br0.5/BiOCl0.5Br0.5 with ultra-fast charge-separation efficiency and high redox ability. This work reveals an approach for the synthesis of multivariate composite solid solution photocatalysts and the degradation of oil field produced pollutant by this photocatalyst.