Structural and Optical Properties of Bi12NiO19 Sillenite Crystals: Application for the Removal of Basic Blue 41 from Wastewater

This article covers the structural and optical property analysis of sillenite Bi12NiO19 (BNO) in order to characterize a new catalyst that could be used for environmental applications. BNO crystals were produced by combustion method using Polyvinylpyrrolidone as reagent. Different approaches resulting catalyst. Starting with X-ray diffraction (XRD), structure was refined from XRD data Rietveld then form this illustrated first time. has space group I23 lattice parameter = 10.24 Å. In addition, special surface area (SSA) determined Brunauer-Emmett-Teller (BET) method. It found range between 14.56 20.56 cm2·g−1. Then, morphology nanoparticles visualized Scanning Electron Microscope (SEM). For properties BNO, UV-VIS diffusion reflectance spectroscopy (DRS) used, 2.1 eV bandgap discovered. sillenite′s narrow makes it an effective The photocatalytic performance synthesized examined degradation Basic blue 41. efficiency BB41 achieved 98% within just 180 min at pH ~9 dose 1 g/L under visible irradiation. relevant reaction mechanism pathways also proposed work.