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.
作者
魏媛媛
王有群
裴佳莹
南华瑞
曹小红
刘云海
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)
出处
《现代化工》
CAS
CSCD
北大核心
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)。
关键词
MOF衍生碳基材料
磷酸化
铀
吸附
MOF-derived carbon materials
phosphorylation
uranium
adsorption
作者简介
魏媛媛(2001-),女,硕士研究生,研究方向为放射性核素的分析与检测,yywei0410@163.com;通讯联系人:曹小红(1974-),女,博士,教授,主要从事放射性核素的分析与检测研究,xhcao@eoit.edii.cn。
