“双酰胺型”吸附材料的制备及其吸附性能研究  

Research on the Preparation and Adsorption Performances of Dual-amide-type Adsorption Materials

作　　者：于永启 彭金玉 邹智挥 YU Yongqi;PENG Jinyu;ZOU Zhihui(School of Materials Science and Engineering,Sichuan University of Science&Engineering,Zigong 643000,China;Material Corrosion and Protection Key Laboratory of Sichuan Province,Zigong 643000,China)

机构地区：[1]四川轻化工大学材料科学与工程学院,四川自贡643000 [2]材料腐蚀与防护四川省重点实验室,四川自贡643000

出　　处：《四川轻化工大学学报(自然科学版)》2024年第6期15-22,共8页Journal of Sichuan University of Science & Engineering(Natural Science Edition)

基　　金：四川省科技厅项目(2022JDTD0016);四川轻化工大学人才引进项目(2019RC07)。

摘　　要：铅(Pb^(2+))作为最具致癌性的重金属之一,是一类对人体危害极大的污染物,去除水中重金属离子(Pb^(2+))已然成为人们关注的重点和热点。三聚氰胺作为一种重要的氮杂环有机化工原料,因其具有六元氮杂环的共轭高化学稳定芳香结构,导致其反应活性较低,难以修饰加工。为拓宽三聚氰胺利用途径,通过以三聚氰胺、均苯三甲酰氯或对苯二甲酰氯、六水合硝酸锌为主要原料,制备了三聚氰胺基“双酰胺型”吸附材料,并对材料结构进行了表征,测试了其对重金属Pb^(2+)的吸附性能。结果表明,在25℃,pH值为5时,三聚氰胺基“双酰胺型”吸附材料M3C对Pb^(2+)的吸附量最高可达756 mg/g;M2C吸附Pb^(2+)动力学更符合准二级动力吸附模型;Langmiur等温吸附拟合结果表明M3C的吸附性能优于M2C。Pb^(2+)as one of the most carcinogenic heavy metals,is a kind of pollutant with great harm to human body,and it has become a focus and hotspot to remove heavy metal ions(Pb^(2+))from water.Melamine is an important nitrogen-containing heterocycle organic chemical material,whose reactivity is low due to the conjugated high chemical stability aromatic structure of hexagonal nitrogen heterocycles,which is hard to be chemically modified.In order to widen the applications of melamine,melamine based dual-amide-type adsorption materials are prepared using melamine,trimesoyl chloride or terephthaloyl chloride,and zinc nitrate hexahydrate as raw materials,whose structure is characterized and adsorption performances for Pb^(2+)is learned.The experimental results show that the maximum adsorption capacity of the melamine based dual-amide-type adsorption materials such as M3C can reach as high as 756 mg/g at 25℃when the pH is 5.The kinetics of M2C adsorption for Pb^(2+)is found to be best-fit pseudo-second order equations.Langmuir isotherms equilibrium indicates that the adsorption performances of M3C surpasses M2C.

关 键 词：三聚氰胺 重金属 Pb^(2+) 双酰胺型 吸附性能 

分 类 号：X703[环境科学与工程—环境工程]