摘要
以溶剂热法制备了Co0.5Ni0.5Fe2O4纳米吸附剂,用透射电子显微镜(TEM)、X-射线衍射(XRD)、BET比表面仪、磁强计等分析了结构特性。结果表明,Co0.5Ni0.5Fe2O4纳米吸附剂为非晶态,比表面积为426.8 m2/g,饱和磁化强度为10.4 emu/g,且靠外磁场易回收。Co0.5Ni0.5Fe2O4吸附处理水中五氯苯酚时,吸附动力学符合Langergren模型,平衡吸附量为27.87 mg/g;吸附等温线符合Freundlich模型。Co0.5Ni0.5Fe2O4纳米吸附剂的吸附量随煅烧温度升高吸附量明显降低,随Ni含量的增加先增加后平稳趋势。
The Co0. 5Ni0. 5Fe2O4 nanoparticle was prepared by solvothermal method and characterized using the transmission electron microscopy（ TEM）,X-ray diffraction（ XRD）,BET（ Brunauer-Emmett-Teller） specific surface area analyzer and a vibrating sample magnetometer. The Co0. 5Ni0. 5Fe2O4 was amorphous with specific surface area of 426. 8 m2/ g and a saturation magnetization of 10. 4 emu/g. The Co0. 5Ni0. 5Fe2O4 could be easily separated from water using a magnetic field. The adsorption kinetics curves of pentachlorophenol（ PCP） on Co0. 5Ni0. 5Fe2O4 could be well correlated by Langergren kinetic adsorption model and the equilibrium adsorption capacity was 27. 87 mg/g. The adsorption isotherms for PCP could be well correlated by Freundlich model. The adsorption capacity decreased obviously with the increase of calcination temperature. The adsorption capacity increased sharply first with the increase of Ni content and then remained unchanged.
出处
《环境工程学报》
CAS
CSCD
北大核心
2015年第9期4228-4232,共5页
Chinese Journal of Environmental Engineering
基金
国家自然科学基金资助项目(21307065)
青岛农业大学大学生科技创新项目
山东省基金项目(BS2012HZ005)
