高等学校化学学报 ›› 2014, Vol. 35 ›› Issue (5): 1100.doi: 10.7503/cjcu20130962

• 高分子化学 • 上一篇    下一篇

改性氧化石墨烯/聚醚砜杂化荷正电纳滤膜的制备及表征

余亮, 张亚涛, 刘金盾()   

  1. 郑州大学化工与能源学院, 郑州 450001
  • 收稿日期:2013-09-29 出版日期:2014-05-10 发布日期:2014-04-03
  • 作者简介:联系人简介: 刘金盾, 男, 博士, 教授, 博士生导师, 主要从事膜分离技术研究. E-mail:liujindun@zzu.edu.cn
  • 基金资助:
    国家自然科学基金(批准号: 21276244, 21106137)和高等学校博士学科点专项科研基金(批准号: 20114101120001)资助

Preparation and Characterization of Modified Graphene Oxide/Polyethersulfone Positively Charged Hybrid Nanofiltration Membrane

YU Liang, ZHANG Yatao, LIU Jindun*()   

  1. School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, China
  • Received:2013-09-29 Online:2014-05-10 Published:2014-04-03
  • Contact: LIU Jindun E-mail:liujindun@zzu.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos.21276244, 21106137), the Research Fund for the Doctoral Program of Higher Education of China(No.20114101120001)

摘要:

以壳聚糖荷正电改性的氧化石墨烯为无机添加剂, 以聚醚砜为膜材料, 聚乙烯吡咯烷酮为致孔剂, 以N,N-二甲基乙酰胺为溶剂, 采用相转化法制备了有机无机杂化纳滤膜. 考察了不同改性氧化石墨烯添加量对膜分离性能的影响. 研究结果表明, 随着改性氧化石墨烯含量的增加, 荷正电纳滤膜的断面形态结构并未发生明显改变, 但杂化膜的纯水通量、 分离选择性明显增加. 从研究结果可以看出, 改性氧化石墨烯的最佳添加质量分数在0.5%左右.

关键词: 氧化石墨烯, 壳聚糖, 聚醚砜纳滤膜, 脱盐

Abstract:

Graphene oxide(GO) has received tremendous attention thanks to its unique two-dimensional feature, fantastic mechanical and chemical properties. In this paper, GO was fabricated and then was modified by chitosan. After the quaternization of modified GO, the positively charged material was used as inorganic additive to prepare polyethersulfone(PES) hybrid nanofiltration membrane with phase inversion method using N,N-dimethylacetamide(DMAc) as solvent, polyvinylpyrrolidone(PVP) as pore-forming agent. The effect of modified GO content on the separating property of hybrid membranes was investigated. The results suggested that the positively charged nanofiltration membranes were prepared successfully without the changes of morphology. With the increase of modified GO content, the water flux and separation selectivity of hybrid membranes were improved significantly and it was proposed that the best additive quantity of modified GO was round 0.5%(mass fraction).

Key words: Graphene oxide, Chitosan, Polyethersulfone nanofiltration membrane, Desalination

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