• 综合
  • 标题
  • 关键词
  • 摘要
  • 学者
  • 期刊-刊名
  • 期刊-ISSN
  • 会议名称
搜索

作者:

Lu, Xuemei (Lu, Xuemei.) | Peng, Yuelian (Peng, Yuelian.) (学者:彭跃莲) | Ge, Lei (Ge, Lei.) | Lin, Rijia (Lin, Rijia.) | Zhu, Zhonghua (Zhu, Zhonghua.) | Liu, Shaomin (Liu, Shaomin.)

收录:

Scopus SCIE

摘要:

This study aimed to develop an effective method to fabricate the amphiphobic polyvinylidene fluoride (PVDF) composite membranes for membrane distillation (MD) with excellent tolerance to various organic foulants. A facial surface modification method was explored to obtain amphiphobic membranes with mechanical and thermal robustness by dynamically forming perfluorooctyl trichlorosilane (PETS) and coating SiO2 nanoparticles onto the membrane surface. A variety of techniques such as environmental scanning electron microscopy (ESEM), Fourier transform infrared spectrometry (FTIR), X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), liquid entry pressure (LEP) measurement and contact angle goniometry were applied to examine the effects of surface modification on surface chemistry, morphology and wettability of the derived membranes. The surface modification conferred the modified membrane superhydrophobicity and oleophobicity, stemmed from micro-fluorinated SiO2 particles covering the membrane surface. The anti-fouling property of the pristine and modified membranes were examined in a direct contact membrane distillation (DCMD) process using sodium chloride solution containing three model foulants (hydrophobic, hydrophilic or amphiprotic). The dynamically formed SiO2-PFTS/PVDF-2 membranes exhibited good thermal and mechanical resistance for DCMD operation. DCMD test showed that the surface modification did not sacrifice the permeate flux and the salt rejection. By adding the organic foulants, the pristine membrane displayed severe permeate flux decay and salt penetration. In contrast, the modified membrane presented a stable permeate flux and high salt rejection with the presence of three foulants respectively. The anti-fouling and anti-wetting properties of the modified membrane could be attributed to the enhanced amphiphobicity of membrane surface. (C) 2015 Elsevier B.V. All rights reserved.

关键词:

Anti-fouling Amphiphobicity Surface modification Membrane distillation

作者机构:

  • [ 1 ] [Lu, Xuemei]Beijing Univ Technol, Coll Environm & Energy Engn, Beijing Key Lab Green Catalysis & Separat, Beijing 100124, Peoples R China
  • [ 2 ] [Peng, Yuelian]Beijing Univ Technol, Coll Environm & Energy Engn, Beijing Key Lab Green Catalysis & Separat, Beijing 100124, Peoples R China
  • [ 3 ] [Ge, Lei]Univ Queensland, Sch Chem Engn, Brisbane, Qld 4072, Australia
  • [ 4 ] [Lin, Rijia]Univ Queensland, Sch Chem Engn, Brisbane, Qld 4072, Australia
  • [ 5 ] [Zhu, Zhonghua]Univ Queensland, Sch Chem Engn, Brisbane, Qld 4072, Australia
  • [ 6 ] [Liu, Shaomin]Curtin Univ, Dept Chem Engn, Perth, WA 6102, Australia

通讯作者信息:

  • 彭跃莲

    [Peng, Yuelian]Beijing Univ Technol, Coll Environm & Energy Engn, Beijing Key Lab Green Catalysis & Separat, Beijing 100124, Peoples R China;;[Zhu, Zhonghua]Univ Queensland, Sch Chem Engn, Brisbane, Qld 4072, Australia

电子邮件地址:

查看成果更多字段

相关关键词:

来源 :

JOURNAL OF MEMBRANE SCIENCE

ISSN: 0376-7388

年份: 2016

卷: 505

页码: 61-69

9 . 5 0 0

JCR@2022

ESI学科: CHEMISTRY;

ESI高被引阀值:221

中科院分区:1

被引次数:

WoS核心集被引频次: 142

SCOPUS被引频次: 149

ESI高被引论文在榜: 0 展开所有

万方被引频次:

中文被引频次:

近30日浏览量: 2

在线人数/总访问数:552/3896786
地址:北京工业大学图书馆(北京市朝阳区平乐园100号 邮编:100124) 联系我们:010-67392185
版权所有:北京工业大学图书馆 站点建设与维护:北京爱琴海乐之技术有限公司