Preparation of ZnO photocatalysts and study on photocatalytic degradation of antibiotic wastewater

Abstract

Nano ZnO/graphene composites were prepared by the oxidation of graphite and nano ZnO as the precursors under the condition of water temperature at 120℃. The photocatalytic activity of the composite was detected to treat simulated antibiotic wastewater by using the solution of tetracycline hydrochloride with 300W xenon lamp light source. The optimal conditions for the degradation of the composite material were obtained by single factor test. The optimized conditions were obtained as follows: the amount of catalyst, the time and the pH value was at 20mg, 4 hours and 5 respectively. The degradation rate of the solution of tetracycline hydrochloride could reach 86.7%.

Metaloxide Nanomaterials and Nanocomposites of Ecological Purpose

“…The creation of composites based on zinc oxide, for example, ZnO-graphene, allows obtaining photocatalytically active catalysts with respect to antibiotics in wastewater [307]. The obtained ZnO-reduced graphene oxide (rGO) nanocomposites in [308] showed more than doubled photocatalytic activity in visible light to dyes of different natures compared to pure ZnO.…”