磷酸化MOF衍生碳基材料(PC-808-PO4)对U(Ⅵ)吸附性能的研究  

Study on adsorption properties of phosphorylated MOF-derived carbon materials(PC-808-PO)to U(Ⅵ)

作　　者：魏媛媛 王有群[1] 裴佳莹 南华瑞 曹小红[1] 刘云海[1] WEI Yuan-yuan;WANG You-qun;PEI Jia-ying;NAN Hua-rui;CAO Xiao-hong;LIU Yun-hai(State Key Laboratory of Nuclear Resources and Environment,East China University of Technology,Nanchang 330013,China)

机构地区：[1]核资源与环境国家重点实验室,东华理工大学,江西南昌330013

出　　处：《现代化工》2021年第1期118-122,127,共6页Modern Chemical Industry

基　　金：江西省自然科学基金项目(20202BABL203016,20202BABL213026)。

摘　　要：以MOF-808为牺牲模板,经惰性气氛碳化和磷酸化改性制备磷酸化MOF衍生碳基材料PC-808-PO_(4),并考察其对U(Ⅵ)的吸附性能。结果表明,在p H 5.5和298.15 K时,PC-808-PO_(4)对U(Ⅵ)的最大吸附容量为391.54 mg/g。U(Ⅵ)在PC-808-PO_(4)上的吸附符合Langmuir吸附等温模型和准二级动力学模型,表明其为单层化学吸附过程。PC-808-PO_(4)对U(Ⅵ)的优异吸附效果可用于放射性废水中U(Ⅵ)的去除。Using MOF-808 as sacrificial templates,phosphorylated MOF-derived carbon materials(PC-808-PO_(4))are prepared by carbonization in inert atmosphere followed by phosphorylation.PC-808-PO_(4) are used as adsorbents for the removal of U(Ⅵ)through batch experiments.Results show that the maximum adsorption capacity of PC-808-PO_(4) to U(Ⅵ)reaches 391.54 mg·g^(-1) at a p H value of 5.5 and 298.15 K.The adsorption process of U(Ⅵ)by PC-808-PO_(4) conforms to Langmuir adsorption isotherm and pseudo-second-order kinetic model,indicating a monolayer chemical adsorption process.PC-808-PO_(4) can be used as adsorbent to remove U(Ⅵ)from radioactive wastewater due to their excellent adsorption performance.

关 键 词：MOF衍生碳基材料 磷酸化 铀 吸附 

分 类 号：TQ314.2[化学工程—高聚物工业]