TiO<sub>2</sub>-incorporated polyelectrolyte composite membrane with transformable hydrophilicity/hydrophobicity for nanofiltration separation

Yahua Lu; Zhenping Qin; Naixin Wang; Hongxia Guo; Quanfu An; Yucang Liang

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TiO₂-incorporated polyelectrolyte composite membrane with transformable hydrophilicity/hydrophobicity for nanofiltration separation

Separation Science and Engineering | Updated：2026-01-06

- TiO₂-incorporated polyelectrolyte composite membrane with transformable hydrophilicity/hydrophobicity for nanofiltration separation
- Chinese Journal of Chemical Engineering Vol. 28, Issue 10, Pages: 2533-2541(2020)
- Affiliations：
  
  1. Beijing Key Laboratory for Green Catalysis and Separation, College of Environmental and Energy Engineering, Beijing University of Technology,Beijing,China,100124
  2. College of Materials Science and Engineering, Beijing University of Technology, Key Laboratory of Advanced Functional Materials, Ministry of Education,Beijing,China,100124
  3. Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, Tübingen,Germany,72076
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：2020
- Accepted：
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-incorporated polyelectrolyte composite membrane with transformable hydrophilicity/hydrophobicity for nanofiltration separation[J]. 中国化学工程学报, 2020, 28(10): 2533-2541.
DOI：

-incorporated polyelectrolyte composite membrane with transformable hydrophilicity/hydrophobicity for nanofiltration separation[J]. 中国化学工程学报, 2020, 28(10): 2533-2541. DOI：

摘要

Abstract

The wettability of the membrane surface has shown obvious influent on the separation performance of the membrane. In this work

a hydrophilic PDA-[PDDA/TiO

]

membrane was prepared by a one-step codeposition of poly(diallyldimethylammonium chloride) (PDDA) polyelectrolyte solution containing positively charged TiO

@ PDDA nanoparticles with the assistance of dopamine (DA). Such positively charged membrane can be transformed into a hydrophobic membrane PDA-[PDDA/TiO

]

PFO

via

the counterion exchange between Cl

and PFO

(perfluorooctanoate). The transformation between hydrophilicity and hydrophobicity is reversible. For both hydrophilic and hydrophobic membranes

the nanofiltration performances were respectively investigated by the aqueous solution and ethanol solution of dyes including methyl blue (MB)

Congo red (CR) and Evans blue (EB)

and as well metal salt aqueous solution. The consecutive running stability and anti-fouling performance of both hydrophilic and hydrophobic membranes were explored. The results revealed that both membranes

showed high nanofiltration performances for retention of dyes in (non)aqueous solution. For the hydrophilic membrane

the rejection of salts in a sequence is MgSO

MgCl

NaCl. Moreover

both

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Related Institution

State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology

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Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University

School of Engineering & Institute for Life Sciences, University of Southampton

⁰

TiO2-incorporated polyelectrolyte composite membrane with transformable hydrophilicity/hydrophobicity for nanofiltration separation

DOI：

摘要

Abstract

关键词

Keywords

references

TiO₂-incorporated polyelectrolyte composite membrane with transformable hydrophilicity/hydrophobicity for nanofiltration separation