共价有机框架材料的制备及对染料吸附性能的研究  

Study on preparation of covalent organic framework materials and their adsorption properties for dyes

作　　者：裴秀 李亚明[1,2] PEI Xiu;LI Yaming(Gansu Key Laboratory of Solar Power Generation System Project,Jiuquan Vocational and Technical College,Jiuquan 735000,China;State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals,Lanzhou University of Technology,Lanzhou 730050,China)

机构地区：[1]甘肃省太阳能发电系统工程重点实验室,酒泉职业技术学院,甘肃酒泉735000 [2]有色金属先进加工与回收国家重点实验室,兰州理工大学,甘肃兰州730050

出　　处：《无机盐工业》2023年第1期106-111,共6页Inorganic Chemicals Industry

基　　金：甘肃省自然基金项目(20JR10RF814);甘肃省创新基金项目(2020-376)。

摘　　要：利用溶剂热法合成了一种二维的共价有机框架(DMTP-TAPB COF)材料。通过X射线衍射仪(XRD)、扫描电子显微镜(SEM)和热重分析仪(TGA)对合成材料的结构、形貌和性能进行了详细的研究。然后研究了制备的共价有机框架材料对于靛蓝胭脂红染料(IC)的吸附能力,考察了不同吸附时间、不同p H和不同靛蓝胭脂红的初始浓度对吸附性能的影响。实验结果表明,制备的二维共价有机框架材料具有良好的结晶度和均匀的形貌。同时,DMTP-TAPB COF对靛蓝胭脂红具有较高的吸附能力(330.5 mg/g)和移除效率(84.5%),吸附过程符合准二级动力学方程和Langmuir吸附模型。该研究表明共价有机框架材料作为污染物的吸附剂具有广阔的应用前景。The two-dimensional(2D) covalent organic framework(DMTP-TAPB COF) materials were prepared via the solvothermal method.The structure,morphology,and properties of as-prepared materials were studied in detail through X-ray diffraction(XRD),scanning electron microscope(SEM) and thermogravimetric analyzer(TGA).Then,the adsorption capacity of the prepared COF materials for indigo carmine(IC) dye was studied.The effects of adsorption time,p H values and initial concentrations of IC on the adsorption performance were investigated.The experimental results showed that as-prepared 2D COF materials had good crystallinity and uniform morphology.Meanwhile,the DMTP-TAPB COF had a higher adsorption capacity(330.5 mg/g) and favourable removal efficiency(84.5%) for IC.Moreover,the adsorption process of covalent organic framework DMTP-TAPB COF for indigo carmine was combined with the pseudo-second-order kinetics model and the Langmuir adsorption model.The study showed that COF materials had broad application prospects as adsorbent for pollutants.

关 键 词：共价有机框架 靛蓝胭脂红 吸附 污水处理 

分 类 号：TQ319[化学工程—高聚物工业]