共价有机框架材料的制备及对染料吸附性能的研究
收稿日期: 2022-04-16
网络出版日期: 2023-01-17
基金资助
甘肃省自然基金项目(20JR10RF814);甘肃省创新基金项目(2020-376)
Study on preparation of covalent organic framework materials and their adsorption properties for dyes
Received date: 2022-04-16
Online published: 2023-01-17
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pH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。
裴秀 , 李亚明 . 共价有机框架材料的制备及对染料吸附性能的研究[J]. 无机盐工业, 2023 , 55(1) : 106 -111 . DOI: 10.19964/j.issn.1006-4990.2022-0205
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，pH 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.
Key words： covalent organic framework; indigo carmine; absorption; water treatment
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