Citrate-oxidative sol–gel synthesis Sr3Ni2WO9 triple perovskite for photocatalytic remediation of emerging contaminants

Abstract

The complex perovskite materials are of great interest due to the coexistence of ferri/ferromagnetic which provides unique optoelectrical and physical properties. The semiconducting nature of these materials allows them for multiple applications in catalysis and electronics. Here, the modified citrate sol–gel approach has been effectively used to synthesize the nanoscale crystalline triple perovskite Sr₃Ni₂WO₉ (SNWO), with an average crystallite size of 250 Å. X-ray diffraction was primarily used to examine the structure of the SNWO triple perovskite, and the Rietveld analysis was then used to analyze it. With a cell volume of 330.15 ų, the phase pure perovskite compound crystallizes in the P12/m1(10) space-group at room temperature, displaying a monoclinic structure with crystal parameters of a = 7.84 Å, b = 5.56 Å, and c = 7.57 Å. Upon photocatalytic study, the material showed efficient degradation of organic complexes with 99 % and 82 % degradation efficiency for dye mixture and antibiotic mixture which are contaminants of emerging concerns within 90 min of illumination with LED light (30 W) indicating the photocatalytic prowess of the material.