纳米材料MIL@ZIF-8的制备及其对苯并三唑类紫外线吸收剂的吸附性能研究  

Preparation of nanomaterial MIL@ZIF-8 and its adsorption performance for benzotriazole UV absorbers

作　　者：徐佳敏 张占恩[1] 高仕谦[1] Xu Jiamin;Zhang Zhanen;Gao Shiqian(College of Environmental Science and Engineering,Suzhou University of Science and Technology,Suzhou 215009)

机构地区：[1]苏州科技大学环境科学与工程学院,苏州215009

出　　处：《化工新型材料》2023年第6期290-294,共5页New Chemical Materials

基　　金：江苏省研究生科研创新计划(KYCX18-2561)。

摘　　要：利用高温微波水热法合成离子液体磁性类沸石有机骨架纳米材料(MIL@ZIF-8),采用透射电镜(TEM)、傅里叶红外光谱(FT-IR)、比表面测试(BET)和孔径分析(BJH)对MIL@ZIF-8进行表征分析,并用其吸附环境水样中的4种苯并三唑类化合物(UV-320、UV-327、UV-328、UV-329)紫外线吸收剂,考察不同参数得出最佳吸附条件:材料投加量20mg、吸附pH=6、吸附温度为室温,且采用搅拌的方式。经一、二级动力学和热力学拟合分析发现,MIL@ZIF-8吸附苯并三唑类化合物的过程以化学吸附为主,符合Freundlich等温吸附模型,动力学模型过程更符合准二级动力学模型。Ionic liquid magnetic zeolitic imidazolate organic framework nanomaterials(MIL@ZIF-8)were synthesized by high temperature microwave hydrothermal method.MIL@ZIF-8 was characterized by TEM,FT-IR,BET and BJH,and used to adsorb four kinds of the benzotriazole ultraviolet absorbers(UV-320,UV-327,UV-328,UV-329)in environmental water samples.Different parameters were examined to determine the best adsorption conditions:material dosage of 20mg,adsorption pH=6,room temperature,and stirring.The first and second-order kinetics and thermodynamics fitting analysis revealed that the adsorption process of MIL@ZIF-8 adsorption for BTs was mainly chemical adsorption,which conformed to the Freundlich isotherm adsorption model,and the kinetic model process was more in line with the quasi-secondary kinetic model.

关 键 词：高温微波合成法 苯并三唑类化合物紫外线吸收剂 离子液体磁性类沸石有机骨架纳米材料 吸附 

分 类 号：X52[环境科学与工程—环境工程]