PAN/TiO2纳米纤维膜的制备与性能分析

doi:10.19491/j.issn.1001-9278.2020.04.006

中国塑料 ›› 2020, Vol. 34 ›› Issue (4): 30-34.DOI: 10.19491/j.issn.1001-9278.2020.04.006

PAN/TiO₂纳米纤维膜的制备与性能分析

卢晓龙¹^,², 柳炫羽², 丁恩普², 张贝贝², 于翔², 秦刚¹()

^1.河南理工大学材料科学与工程学院，河南焦作 454001
^2.河南工程学院材料与化学工程学院，郑州 450007

收稿日期:2019-11-04 出版日期:2020-04-26 发布日期:2020-04-26

Preparation and Performance Investigation of PAN/TiO₂ Nanofiber Membranes

Xiaolong LU¹^,², Xuanyu LIU², Enpu DING², Beibei ZHANG², Xiang YU², Gang QIN¹()

^1.School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454001, China
^2.Department of Material and Chemical Engineering, Henan University of Engineering, Zhengzhou 450007, China

Received:2019-11-04 Online:2020-04-26 Published:2020-04-26
Contact: Gang QIN E-mail:1x11xlpolymer@sina.com

摘要/Abstract

摘要：

通过静电纺丝和水热处理的方法成功制备了高效、可回收利用的聚丙烯腈/二氧化钛(PAN/TiO₂)纳米纤维膜。采用扫描电子显微镜、X射线衍射和亚甲基蓝(MB)降解率等对PAN/TiO₂纳米纤维膜形貌、晶体结构、力学性能以及光催化活性进行表征。结果表明，钛酸四丁酯(TBT)的添加有效减小了纤维直径；水热处理成功将TBT转化为锐钛矿TiO₂，并且PAN/TiO₂纳米纤维膜强度均高于纯PAN；紫外光照射120 min后，纤维膜对MB光催化降解率最大可达到94.8 %，同时连续5次回收再利用后纤维膜仍保持良好的光催化活性。

关键词: 聚丙烯腈, 二氧化钛, 纳米纤维, 静电纺丝, 光催化

Abstract:

Highly efficient and recyclable polyacrylonitrile (PAN)/TiO₂ nanofiber membranes were prepared by means of electrospinning and hydrothermal treatment, and their morphology, crystalline structure, mechanical properties and photocatalytic activity were characterized by SEM, XRD and the degradation efficiency of methylene blue (MB). The results indicated that the fiber diameter was reduced effectively with the addition of tetrabutyl titanate which could be successfully transferred into anatase TiO₂ under the hydrothermal treatment. The strength of the PAN/TiO₂ membranes was found to be higher than that of pure PAN membrane. The membranes exhibited a maximum photocatalytic degradation efficiency of 94.8 % for MB after ultraviolet irradiation for 120 min, and a great photocatalytic activity was maintained for the membranes after five?time recycling.

Key words: polyacrylonitrile, titanium dioxide, nanofiber membrane, electrospinning, photocatalysis

中图分类号:

TQ322.4

卢晓龙, 柳炫羽, 丁恩普, 张贝贝, 于翔, 秦刚. PAN/TiO₂纳米纤维膜的制备与性能分析[J]. 中国塑料, 2020, 34(4): 30-34.

Xiaolong LU, Xuanyu LIU, Enpu DING, Beibei ZHANG, Xiang YU, Gang QIN. Preparation and Performance Investigation of PAN/TiO₂ Nanofiber Membranes[J]. China Plastics, 2020, 34(4): 30-34.

图/表 8

图1 PAN/TiO2纳米纤维膜的SEM照片

Fig. 1 SEM images of PAN/TiO2 nanofiber membranes

图2 PAN/TiO2纤维的直径分布

Fig. 2 Diameter distribution of PAN/TiO2 fibers

图3 PT?1的TEM照片

Fig. 3 TEM images of PT?1

图4 PAN/TiO2纳米纤维膜的XRD谱图

Fig. 4 XRD patterns of PAN/TiO2 nanofiber films

图5 PAN/TiO2纳米纤维膜的应力?应变曲线

Fig.5 The curves of stress?strain for PAN/TiO2 nanofiber films

样品	断裂强度/MPa	断裂伸长率/%
PAN	4.11	33.24
PT?0.5	5.35	42.56
PT?1	7.84	48.24
PT?2	6.58	56.88

表1 TiO2含量对PAN/TiO2纳米纤维膜力学性能的影响

Tab.1 The effect of TiO2 content on mechanical properties of PAN/TiO2 nanofiber membranes

图6 PAN/TiO2纳米纤维膜的降解曲线

Fig. 6 Degradation curves of PAN/TiO2 nanofibers membranes

图7 PT?1循环使用曲线

Fig. 7 The recycle curves of PT?1

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PAN/TiO₂纳米纤维膜的制备与性能分析

Preparation and Performance Investigation of PAN/TiO₂ Nanofiber Membranes

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