Preparation of Cu2O nanosheet-covered carbon composite material and its application in photoelectrocatalytic degradation of 2,6-dichlorophenol
Cu2O nanosheets were synthesized on graphene-covered carbon fibers (GFs) by pulsed electrodeposition. The morphology, elemental composition, microstructure, and electrochemical properties of the Cu2O/GFs electrode were characterized using field-emission scanning electron microscope (FE-SEM), energy-dispersive spectrometer (EDS), X-ray photoelectron spectrometer (XPS), X-ray diffractometer (XRD), and electrochemical measurements. The results showed that the Cu2O nanosheets had a size of ca .60 nm and were uniformly distributed on the surface of carbon fiber. The photoelectrocatalytic property of the Cu2O/GFs composite material for 2,6-dichlorophenol (2,6-DCP) was studied. The effects of illumination conditions, bias voltage, and photoelectric cooperation on the degradation of 2,6-DCP were examined. The results indicated that the degradation efficiency of 2,6-DCP with an initial concentration of 20 mg/L could be higher than 90% under ultraviolet light illumination at a bias voltage of 1.2 V ( vs. saturated calomel electrode) within 1 hour.
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