Due to the massive discharge of antibiotics in water,it is an urgent matter to remove antibiotics from waste water.The photocatalysts with high stability and activity have attracted extensive attention from researcher...Due to the massive discharge of antibiotics in water,it is an urgent matter to remove antibiotics from waste water.The photocatalysts with high stability and activity have attracted extensive attention from researchers.By an in-situ polymerization method,polypyrrole(PPy)was modified on the surface of TiO_(2)(named as TiO_(2)/PPy).By one-step reduction method,NiCoP was grafted on the surface of TiO_(2)/PPy(named as TiO_(2)/PPy/NiCoP)to synthesize the photocatalyst of TiO_(2)/PPy/NiCoP for degradation of tetra-cycline(TC)antibiotic.The characterization results revealed that NiCoP was deposited on the surface of TiO_(2)/PPy successfully.The photocatalytic experiment results illustrated that 83.2%of TC could be de-graded at natural pH with 20 mg of TiO_(2)/PPy/NiCoP in 50 mL of TC solution(10 mg/L)under visible light irradiation.The high catalytic activity is attributed to the attachment of NiCoP on the surface of TiO_(2)/PPy which can enlarge the light response range of TiO_(2)effectively.Scavenger studies revealed that the degra-dation of TC was dominated by•O_(2)−and h+.The photodegradation efficiency of TC with TiO_(2)/PPy/NiCoP still reached over 74%after 5 consecutive cycles,indicating the potential applications in practical wastew-ater.展开更多
基金financial support from the National Natural Science Foundation of China (No. 41603087)Natural Science Foundation of Gansu (No. 20JR5RA282)
文摘Due to the massive discharge of antibiotics in water,it is an urgent matter to remove antibiotics from waste water.The photocatalysts with high stability and activity have attracted extensive attention from researchers.By an in-situ polymerization method,polypyrrole(PPy)was modified on the surface of TiO_(2)(named as TiO_(2)/PPy).By one-step reduction method,NiCoP was grafted on the surface of TiO_(2)/PPy(named as TiO_(2)/PPy/NiCoP)to synthesize the photocatalyst of TiO_(2)/PPy/NiCoP for degradation of tetra-cycline(TC)antibiotic.The characterization results revealed that NiCoP was deposited on the surface of TiO_(2)/PPy successfully.The photocatalytic experiment results illustrated that 83.2%of TC could be de-graded at natural pH with 20 mg of TiO_(2)/PPy/NiCoP in 50 mL of TC solution(10 mg/L)under visible light irradiation.The high catalytic activity is attributed to the attachment of NiCoP on the surface of TiO_(2)/PPy which can enlarge the light response range of TiO_(2)effectively.Scavenger studies revealed that the degra-dation of TC was dominated by•O_(2)−and h+.The photodegradation efficiency of TC with TiO_(2)/PPy/NiCoP still reached over 74%after 5 consecutive cycles,indicating the potential applications in practical wastew-ater.
