Preparation of Biomass Charcoal Doped BiOBr and Its Photocatalytic Performance
Using cotton pulp waste liquid as a biomass charcoal source,a biomass charcoal doped BiOBr(C-BiOBr)was prepared by a hydrothermal method.The product was analyzed to clarify its structure-function relationship using X-ray powder diffractometer,X-ray photoelectron spectroscope,scanning elec-tron microscope,and ultraviolet-visible spectrophotometer.The results showed that the degradation rate of Rhodamine B solution by C-BiOBr could reach 98.56％,which is 2.8 times that of BiOBr.The photo-degradation rate of tetracycline hydrochloride reached 90.4％,which is 1.6 times that of BiOBr.In the cy-clic experiment,the degradation of Rhodamine B could still reach 88.3％after 5 cycles.Subsequent mech-anism research results proved that photo-generated holes and superoxide radical were the main active sub-stance for photocatalytic degradation.As-synthesized C-BiOBr exhibited good photocatalytic activity and stability,and has potential application prospects in wastewater treatment.
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