NH_(2)-MOF-199@粘胶复合非织造材料的制备及有机染料吸附性能  

Preparation of NH2-MOF-199@Viscose Spunlaced Composite Nonwoven Material and Adsorption Performance for Organic Dyestuffs

作　　者：孙辉[1,2] 李逢春 丰江丽 谢有秀 王冰冰 徐涛 于斌[1,2] Hui Sun;Fengchun Li;Jiangi Feng;Youxiu Xie;Bingbing Wang;Tao Xu;Bin Yu(College of Textile Science and Engineering,Zhejiang Sci-Tech University,Hangzhou 310018,China;Zhejiang Provincial Innovation Center of Advanced Textile Technology,Shaoxing 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：《高分子材料科学与工程》2024年第8期1-10,共10页Polymer Materials Science & Engineering

基　　金：浙江省自然科学基金资助项目(LTGS23E030005);浙江省“高层次特殊人才支持计划”科技创新领军人才项目(2021R52031)。

摘　　要：采用原位溶剂热法在粘胶水刺非织造材料(VSN)表面合成了金属有机框架材料NH_(2)-MOF-199,制备了NH_(2)-MOF-199@粘胶水刺复合非织造材料(NH_(2)-MOF-199@VSN);然后,将NH_(2)-MOF-199@VSN经200℃高温煅烧,得到炭化后的NH_(2)-MOF-199@VSNC。结果表明,呈八面体结构的NH_(2)-MOF-199晶体粒子被均匀、致密地固定在VSN表面。高温炭化后,NH_(2)-MOF-199粒子的表面出现小孔和裂纹。与VSN和NH_(2)-MOF-199@VSN相比,NH_(2)-MOF-199@VSNC对亚甲基蓝(MB)的吸附效果最佳。当吸附溶液的温度为30℃,pH=7时,NH_(2)-MOF-199@VSNC对MB的吸附效率最高,为98.42%,经5次重复吸附使用后,NH_(2)-MOF-199@VSNC对MB的吸附效率仍有65.76%。NH_(2)-MOF-199@VSNC对MB的吸附是吸热、熵增且自发的过程,与准一级吸附动力学模型相比,其对MB的吸附过程更适合用准二级吸附动力学模型描述,吸附机理以化学吸附为主,伴随着物理吸附。NH_(2)-MOF-199,a kind of metal-organic framework materials,was synthesized on the surface of viscose spunlaced nonwoven material(NH_(2)-MOF-199@VSN)via in situ solvothermal method to obtain NH_(2)-MOF-199@viscose spunlaced composite nonwoven material(VSN).Then NH_(2)-MOF-199@VSNC was prepared by high-temperature calcination of NH_(2)-MOF-199@VSN at 200℃.The results show that NH_(2)-MOF-199 crystal particles with a regular octahedral structure are uniformly and compactly immobilized on the surface of VSN.After being calcinated at high temperature,some small holes and cracks appear on the surface of NH_(2)-MOF-199.Compared with VSN and NH_(2)-MOF-199@VSN,NH_(2)-MOF-199@VSNC has the best adsorption capacity for methylene blue(MB)in aqueous solution.The adsorption efficiency of NH_(2)-MOF-199@VSNC for MB reaches the maximum of 98.42%when the temperature of adsorption solution is 30℃and the pH value is 7.After being repeatedly used five cycles,the adsorption efficiency of NH_(2)-MOF-199@VSNC for MB still maintains about 65.76%.The MB adsorption process of NH_(2)-MOF-199@VSNC is a heat-absorbing,entropy-increasing and spontaneous process.Compared with the quasi-first-order adsorption kinetics model,the adsorption process is more suitable to be described by the quasi-second-order adsorption kinetics model,indicating that the MB adsorption process of NH_(2)-MOF-199@VSNC is dominated by chemical adsorption and accompanied by physical adsorption.

关 键 词：粘胶水刺非织造材料 NH_(2)-MOF-199 炭化 亚甲基蓝 吸附性能 

分 类 号：X703[环境科学与工程—环境工程]