摘要 采用水热法制备了负载NiAlFe层状双氢氧化物(LDHs)的硅酸镍空心球(NiSiO@NiAlFe),用于去除水中不同类型的抗生素。研究结果表明,pH为4~8时,NiSiO@NiAlFe对四环素(TC)和环丙沙星(CIP)的吸附效果较好,吸附过程更符合Freundlich模型。15℃下,NiSiO@NiAlFe对TC和CIP的最大吸附容量分别为35.7、35.3 mg/g。吸附热力学表明该吸附过程是自发吸热过程。NiSiO@NiAlFe对TC和CIP的吸附机理为静电引力和络合作用。该材料对水中抗生素的去除有较大潜力。 Layered double hydroxides(LDHs)coated NiAlFe—nickel silicate hollow spheres(NiSiO@NiAlFe)were prepared by hydrothermal method for the removal of different types of antibiotics in water.Results indicated that NiSiO@NiAlFe had a good adsorption efficiency on tetracycline(TC)and ciprofloxacin(CIP)in the pH range of 4-8.The adsorption process of TC and CIP was more consistent with the Freundlich model.At 15℃,the maximum adsorption capacities of NiSiO@NiAlFe for TC and CIP were 35.7 and 35.3 mg/g,respectively.Adsorption thermodynamics showed that the adsorption process was spontaneous and endothermic.The adsorption mechanisms of NiSiO@NiAlFe on TC and CIP were electrostatic attraction and complexation.The results showed that this material had great potential to remove antibiotics from water.
出处 《工业水处理》 CAS CSCD 北大核心 2021年第4期56-61,共6页 Industrial Water Treatment
基金 国家自然科学青年基金(51908214,51908213) 江西省科技厅重点研发计划项目(20192BBH80009) 江西省重点实验室项目(20192BCD40013)。
