Synthesis, characterization and photocatalytic activity of ZnO flower and pseudo-sphere: Nonylphenol ethoxylate degradation under UV and solar irradiation
A Ashar, M Iqbal, IA Bhatti, MZ Ahmad… - Journal of Alloys and …, 2016 - Elsevier
Journal of Alloys and Compounds, 2016•Elsevier
ZnO particles (flower and pseudo sphere) were synthesized via precipitation route and
characterized using X-ray diffraction (XRD), Scanning electron microscopy (SEM), Energy
dispersive X-ray analysis (EDX), Fourier transform infra-red (FTIR) spectroscopy, Atomic
force microscopy (AFM), Particle size analyzer and UV–visible techniques. The
photocatalytic activities (PCA) of ZnO flower (uncalcined) and pseudo-sphere (calcined)
were evaluated by degrading nonylphenol ethoxylate-9 (NP9EO) under UV and solar …
characterized using X-ray diffraction (XRD), Scanning electron microscopy (SEM), Energy
dispersive X-ray analysis (EDX), Fourier transform infra-red (FTIR) spectroscopy, Atomic
force microscopy (AFM), Particle size analyzer and UV–visible techniques. The
photocatalytic activities (PCA) of ZnO flower (uncalcined) and pseudo-sphere (calcined)
were evaluated by degrading nonylphenol ethoxylate-9 (NP9EO) under UV and solar …
Abstract
ZnO particles (flower and pseudo sphere) were synthesized via precipitation route and characterized using X-ray diffraction (XRD), Scanning electron microscopy (SEM), Energy dispersive X-ray analysis (EDX), Fourier transform infra-red (FTIR) spectroscopy, Atomic force microscopy (AFM), Particle size analyzer and UV–visible techniques. The photocatalytic activities (PCA) of ZnO flower (uncalcined) and pseudo-sphere (calcined) were evaluated by degrading nonylphenol ethoxylate-9 (NP9EO) under UV and solar irradiation. The process variables i.e., catalyst dose, calcination temperature, H2O2 concentration, pH and UV/solar light exposure were investigated and under optimum conditions of process variables, paper, textile and leather industries effluents were also treated. Calcination at high temperature affected the morphology of ZnO particles. Both ZnO flower and pseudo-sphere degraded NP9EO and pollutants in industrial wastewater efficiently under both UV and solar irradiation. Maximum NP9EO degradation was achieved at 2.5 g/L catalyst dose, high calcination temperature, 4% H2O2 concentration, 6 pH, 110 UV exposure and 12 h solar light exposure. Results reveal that ZnO is efficient photo-catalyst and could be used under solar irradiation for photocatalytic application by tuning the band gap.
Elsevier
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