Pragada, S.C.Thalla, A.K.2026-02-052021Journal of Environmental Management, 2021, 296, , pp. -3014797https://doi.org/10.1016/j.jenvman.2021.113305https://idr.nitk.ac.in/handle/123456789/23026The present study involves a novel protocol to develop a ternary composite catalyst for an effective post-treatment technique for greywater. The ternary film of Fe<inf>2</inf>O<inf>3</inf>–TiO<inf>2</inf>/polyvinyl pyrrolidine (PVP) is coated on a glass tube using spray coating with annealing at 320 °C. The structure, thermal, microstructure, and surface properties of the coated film are characterized by X-ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), Field Emission Scanning Electron Microscopy (FESEM), and Thermo Gravimetric Analysis (TGA). The scratch hardness of photocatalysts at different Fe<inf>2</inf>O<inf>3</inf>/TiO<inf>2</inf> compositions is investigated based on the width measurement of scratch using FESEM analysis. Results show that at an optimum coating of 5% of Fe<inf>2</inf>O<inf>3</inf>/TiO<inf>2</inf> composition catalytic film, the maximum scratch hardness (7.984 GPa) is obtained. Also, the photocatalyst has the highest cohesive bond strength and wearing resistance. The degradation of triclosan (TCS) in treated greywater, discharged from the anaerobic-aerobic treatment system, is investigated at a lab-scale using a solar photocatalytic reactor. The response surface analysis has been performed from the different sets of experimental trials for various optimal parameters. It is observed that the TCS degradation efficiency of 83.27% has resulted under optimum conditions. © 2021 Elsevier LtdCatalystsCoatingsDegradationEffluentsField emission microscopesFilm preparationFourier transform infrared spectroscopyHardnessHematitePhotocatalysisScanning electron microscopySurface analysisThermogravimetric analysisField emission scanning electron microscopyGreywaterImmobilized fe2O3–TiO2/polyvinyl pyrrolidine catalystPolymer basedPolyvinyl pyrrolidineScratch hardnessSolar photocatalysisSpray coatingTriclosan]+ catalystTitanium dioxideferric oxideglassnanofilmpolymerpovidonetitanium dioxidetriclosanpolyvinyl derivativepyrrolidine derivativetitaniumcatalysiscatalystFTIR spectroscopyphotodegradationshifting cultivationthermogravimetryArticlebioremediationchemical compositioncoating thicknesscontact timecrystal structuredechlorinationdecompositiondifferential thermal analysisecotoxicityecotoxicologyeffluentelectrospray mass spectrometryevaporationfield emission scanning electron microscopyfilm coatingfilm thicknesshardnesshydroxylationlight absorptionliquid chromatography-mass spectrometrymechanical stimulus testobserved association rate constantphotocatalysisphysical chemistryprocess optimizationreaction analysisreactor operationresponse surface methodsolar radiationspray coatingsurface propertyultrasoundwaste water managementX ray diffractionCatalysisPolymersPolyvinylsPyrrolidinesTitanium