共价有机框架材料/粘胶水刺非织造布的制备及其染料吸附性能  

Preparation of covalent organic framework/viscose spunlaced nonwoven fabrics and adsorption properties for dyestuff

作　　者：李逢春 孙辉[1,2] 于斌 谢有秀[1,2] 张德伟 LI Fengchun;SUN Hui;YU Bin;XIE Youxiu;ZHANG Dewei(College of Textile Science and Engineering(International Institute of Silk),Zhejiang Sci-Tech University,Hangzhou,Zhejiang 310018,China;Zhejiang Provincial Innovation Center of Advanced Textile Technology,Shaoxing,Zhejiang 312000,China)

机构地区：[1]浙江理工大学纺织科学与工程学院(国际丝绸学院),浙江杭州310018 [2]浙江省现代纺织技术创新中心,浙江绍兴312000

出　　处：《纺织学报》2025年第2期170-179,共10页Journal of Textile Research

基　　金：浙江省自然科学基金项目(LTGS23E030005)。

摘　　要：为制备用于有机染料废水处理的粘胶水刺非织造布(VSN),用稀盐酸对VSN进行预处理后,以1,3,5-三(4-氨基苯基)苯(TAP)和2,6-吡啶二甲醛(DFP)为原料、以乙腈为溶剂、以乙酸为催化剂的条件下进行溶剂热反应,在VSN表面原位合成共价有机框架材料(Pyridine-COF),得到共价有机框架材料/粘胶水刺非织造布(Pyridine-COF/VSN)。借助扫描电子显微镜、红外光谱仪和X射线光电子能谱仪分别表征了Pyridine-COF/VSN的外观形貌、化学结构和元素组成,并测试了其吸附性能、循环使用性能和力学性能。结果表明:Pyridine-COF在VSN纤维表面呈球形结构,粒径为400 nm左右;且制得的Pyridine-COF/VSN对水中阳离子染料亚甲基蓝和罗丹明B(MB和RhB)以及阴离子染料刚果红和甲基橙(CR和MO)均有一定的吸附能力,其中对RhB吸附效率最高,在染液初始质量浓度为20 mg/L、吸附温度为25℃、吸附溶液pH值为7的条件下,Pyridine-COF/VSN对RhB的吸附效率可达98.06%,吸附平衡时间为120 min;Pyridine-COF/VSN具有重复吸附使用性能,经6次循环使用后对RhB的吸附效率可保持在64.60%左右;相比于VSN,Pyridine-COF/VSN的拉伸强度有所下降,而断裂伸长率有所提高。Objective Viscose spunlaced nonwoven fabrics(VSN)are a kind of nonwoven material prepared by spunlacing regenerated cellulose fibers and have the advantages of high strength and abrasion resistance,good air permeability and water wettability,and environmental friendliness and recyclability.Due to a large specific surface area and abundant reactive groups on the macromolecular chain,VSN has the potential to be used in the wastewater treatment field.However,in the face of complex water pollution system,VSN itself is difficult to achieve the efficient adsorption of organic dyes in water.It is necessary for VSN to be functionally modified for high adsorption of organic dyestuffs.Covalent organic frameworks(COFs)possess the advantages of high porosity,low density,customizable structural design,precise pore size,ease of functionalization,and excellent chemical stability,and have great potential as adsorbents for pollutant removal in water.Therefore,the functional modification of VSN using COFs is expected not only to enhance the organic dyestuffs adsorption efficiency of VSN,but also realize the effective recovery and recycling of COFs.Method VSN was first pretreated with dilute hydrochloric acid.Pyridine-COF was then synthesized on the surface of VSN by in-situ solvothermal method using 1,3,5-tris(4-aminophenyl)benzene(TAP)and 2,6-pyridinedicarboxaldehyde(DFP)as raw materials,and acetic acid as catalyst,obtaining Pyridine-COF/VSN.The morphology and structure of Pyridine-COF/VSN were studied,and the adsorption properties of organic dyestuffs were analyzed.Furthermore,the adsorption mechanism was explored by the adsorption kinetics and thermodynamics.Results After in-situ solvothermal synthesis,Pyridine-COF uniformly covered the surface of the viscose fibers,showing a complete and regular spherical structure with a particle size of about 400 nm.In the FT-IR spectra of Pyridine-COF/VSN,the characteristic peaks of C N of COF appeared besides the characteristic peaks attributed to VSN.The XPS spectra of Pyridine-COF/VSN sh

关 键 词：共价有机框架材料 粘胶水刺非织造布 吸附性能 吸附机制 染料废水 废水处理 

分 类 号：TS176[轻工技术与工程—纺织材料与纺织品设计]