Green Synthesis of ZnO and Its Photocatalytic Degradation Performance of Simulated Wastewater
ZnO was prepared by chemical precipitation and hydrothermal synthesis using mannitol as template through green synthesis method.X-ray powder diffractometer(XRD)and scanning electron microscope(SEM)were used to characterize the structure and morphology of the samples.Methylene blue was used to simulate organic pollutants in industrial wastewater,and the performance of photocatalytic degradation of simulated wastewater was studied.The experimental results show that the samples synthesized by the two methods are well dispersed hexagon-al wurtzite structure,and the particle size of ZnO samples decreases with the increase of mannitol dosage.The ZnO samples obtained by chemical precipitation are cocoon shape with annular surface and hollow interior,while the ZnO samples obtained by hydrothermal synthesis are peony shape.The ZnO samples prepared with mannitol as the template can effectively degrade methylene blue,and the catalytic degradation reaction conforms to the kinetic char-acteristics of the quasi-first-order reaction.
mannitoltemplateZnOphotocatalytic degradationwaste water treatment
国家科技期刊平台
NSTL
万方数据
维普
