The Preparation of ZnO/AC Composite Photocatalytic Material for Coking Wastewater Treatment

Abstract

A simple and low-temperature method was utilized to attach nanostructured ZnO to the surface of porous activated carbon (AC). The phase structure and surface morphology of the as-prepared sample were characterized. XRD analysis confirmed patterns for the wurtzite hexagonal phase of ZnO and AC from the sample. SEM demonstrated that the porous character and relatively larger surface area of ZnO/AC composite. In the photocatalytic degradation of coking wastewater, the ZnO/AC composite material showed effective photocatalytic activity. It could be attributed to highly efficient capture and transportation of photo-generated electrons from AC to ZnO.