Multipollutant Abatement through Visible Photocatalytic System

Water pollution damages the aquatic environment due to presence of organic contaminants, which in turn is distressing ecosystem. Photocatalytic activity a greener and promising method degrade these contaminants. In this research, we present degradation diverse water pollutants through zinc/iron oxide nanoparticles serving as photocatalysts. The photocatalyst was studied for its efficiency photodegrade congo red, brilliant green para nitro phenol. Moreover, it also presented an antibacterial against bacterium E. coli. Photocatalyst characterized via X-ray diffraction, scanning electron microscopy-energy dispersive spectroscopy, fourier-transform infrared spectroscopy. Tauc plot used measure optical band gap (1.84 eV). effect various parameters such catalyst dose, contact time, dye dose/concentration pH were investigated determine optimum point maximum response surface methodology. A face-centered composite design used, quadratic model followed by dyes nitrophenol. photodegradation efficiencies 99%, 94.3%, 78.5% phenol, respectively. Quantum yield para-nitrophenol 9.62 × 10−8, 1.17 10−7 4.11 molecules/photons, while reaction rates 27.1 µmolg−1h−1, 29.61 µmolg−1h−1 231