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PVDF/TiO2电纺纤维膜在光降解和油水分离方面的应用

盖军 冯阳阳 柴鹏 颜录科 陈涛

盖军, 冯阳阳, 柴鹏, 颜录科, 陈涛. PVDF/TiO2电纺纤维膜在光降解和油水分离方面的应用[J]. 功能高分子学报, 2021, 34(5): 483-489. doi: 10.14133/j.cnki.1008-9357.20210112001
引用本文: 盖军, 冯阳阳, 柴鹏, 颜录科, 陈涛. PVDF/TiO2电纺纤维膜在光降解和油水分离方面的应用[J]. 功能高分子学报, 2021, 34(5): 483-489. doi: 10.14133/j.cnki.1008-9357.20210112001
GE Jun, FENG Yangyang, CHAI Peng, YAN Luke, CHEN Tao. Application of PVDF/TiO2 Electrospun Fiber Membrane in Photodegradation and Oil-Water Separation[J]. Journal of Functional Polymers, 2021, 34(5): 483-489. doi: 10.14133/j.cnki.1008-9357.20210112001
Citation: GE Jun, FENG Yangyang, CHAI Peng, YAN Luke, CHEN Tao. Application of PVDF/TiO2 Electrospun Fiber Membrane in Photodegradation and Oil-Water Separation[J]. Journal of Functional Polymers, 2021, 34(5): 483-489. doi: 10.14133/j.cnki.1008-9357.20210112001

PVDF/TiO2电纺纤维膜在光降解和油水分离方面的应用

doi: 10.14133/j.cnki.1008-9357.20210112001
基金项目: 陕西省科技计划项目重点产业创新链(群)-工业领域项目(2020ZDLGY13-08);中央高校基本科研业务费专项资金(300102318403、300102319306);长安大学基础研究支持计划专项基金
详细信息
    作者简介:

    盖军:盖 军(1996—),男,山西长治人,硕士,研究方向为污水处理用有机-无机复合材料。E-mail:1256363404@qq.com

    通讯作者:

    颜录科,E-mail:yanlk_79@hotmail.com

    陈 涛,E-mail:tao.chen@nimte.ac.cn

  • 中图分类号: TQ342、TQ319

Application of PVDF/TiO2 Electrospun Fiber Membrane in Photodegradation and Oil-Water Separation

  • 摘要: 通过将聚偏氟乙烯(PVDF)和钛酸四丁脂(TBOT)溶解在N, N’-二甲基甲酰胺(DMF)和丙酮的混合溶剂中电纺成纤维膜(PVDF/TBOT);然后在150 °C下通过一步水热法将电纺纤维膜中的TBOT还原成二氧化钛(TiO2),制得在纤维表面和内部原位生长有TiO2的PVDF纤维膜材料(PVDF/TiO2)。采用扫描电子显微镜(SEM)、热重(TG)分析仪、X射线衍射(XRD)仪和傅里叶红外(FT-IR)光谱仪测定原位生长在PVDF纤维上的TiO2的形貌和结构;通过紫外-可见分光光谱测试复合膜对罗丹明B、甲基橙、亚甲基蓝3种有机染料的降解效果;采用重力驱动的方法分离油水混合物;通过测试复合膜对水和油的接触角来探究复合膜的油水分离效率。研究表明:复合膜对罗丹明B、甲基橙、亚甲基蓝等有机染料都有很好的降解效果,而且具有良好的亲油疏水性能,通过对四氯甲烷和水的混合物进行分离,复合膜能够有效实现油水分离,分离效率可以高达98.2%。

     

  • 图  1  PVDF/TiO2复合纤维膜的制备流程图

    Figure  1.  Preparation flow chart of PVDF/TiO2 composite fiber membrane

    图  2  样品的FT-IR谱图

    Figure  2.  FT-IR spectra of samples

    图  3  样品的XRD谱图

    Figure  3.  XRD patterns of samples

    图  4  样品的SEM照片

    Figure  4.  SEM images of samples

    a―Pure PVDF; b―PVDF/TBOT; c, d―PVDF/TiO2

    图  5  复合膜的热失重曲线

    Figure  5.  TG curves of composite membranes

    图  6  不同有机染料的(a~c)紫外-可见分光光谱与(d)光降解效率曲线

    Figure  6.  (a—c) UV-Vis spectra and (d) photodegradation efficiency curves of different organic dyes

    图  7  PVDF/TiO2复合膜的油水分离实验

    Figure  7.  Oil-water separation experiment of PVDF/TiO2 composite membrane

    a, b―Contact angle of the composite membrane to (a) water and (b) oil; c―Before oil-water separation; d―After oil-water separation

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出版历程
  • 收稿日期:  2021-01-12
  • 网络出版日期:  2021-04-26
  • 刊出日期:  2021-10-01

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