Gradient nanoporous phenolics as substrates for high-flux nanofiltration membranes by layer-by-layer assembly of polyelectrolytes

Yazhi Yang; Qianqian Lan; Yong Wang

doi:10.1016/j.cjche.2019.04.011

Your Location：

Home >

Browse articles >

Gradient nanoporous phenolics as substrates for high-flux nanofiltration membranes by layer-by-layer assembly of polyelectrolytes

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

- Gradient nanoporous phenolics as substrates for high-flux nanofiltration membranes by layer-by-layer assembly of polyelectrolytes
- Gradient nanoporous phenolics as substrates for high-flux nanofiltration membranes by layer-by-layer assembly of polyelectrolytes
- 中国化学工程学报（英文版） 2020年28卷第1期页码：114-121
- Affiliations：
  
  State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, College of Chemical Engineering, Nanjing Tech University,Nanjing,China,211816
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2019.04.011
  中图分类号：
- 纸质出版：2020
- Accepted：
Scan QR Code
Yazhi Yang, Qianqian Lan, Yong Wang. Gradient nanoporous phenolics as substrates for high-flux nanofiltration membranes by layer-by-layer assembly of polyelectrolytes[J]. 中国化学工程学报（英文版）, 2020,28(1):114-121.

Yazhi Yang, Qianqian Lan, Yong Wang. Gradient nanoporous phenolics as substrates for high-flux nanofiltration membranes by layer-by-layer assembly of polyelectrolytes[J]. Chinese Journal of Chemical Engineering, 2020, 28(1): 114-121.
Yazhi Yang, Qianqian Lan, Yong Wang. Gradient nanoporous phenolics as substrates for high-flux nanofiltration membranes by layer-by-layer assembly of polyelectrolytes[J]. 中国化学工程学报（英文版）, 2020,28(1):114-121. DOI： 10.1016/j.cjche.2019.04.011.

Yazhi Yang, Qianqian Lan, Yong Wang. Gradient nanoporous phenolics as substrates for high-flux nanofiltration membranes by layer-by-layer assembly of polyelectrolytes[J]. Chinese Journal of Chemical Engineering, 2020, 28(1): 114-121. DOI： 10.1016/j.cjche.2019.04.011.

摘要

Abstract

Thin film composite (TFC) membranes represent a highly promising platform for efficient nanofiltration (NF) processes. However

the improvement in permeance is impeded by the substrates with low permeances. Herein

highly permeable gradient phenolic membranes with tight selectivity are used as substrates to prepare TFC membranes with high permeances by the layer-by-layer assembly method. The negatively charged phenolic substrates are alternately assembled with polycation polyethylenimine (PEI) and polyanion poly(acrylic acid) (PAA) as a result of electrostatic interactions

forming thin and compact PEI/PAA layers tightly attached to the substrate surface. Benefiting from the high permeances and tight surface pores of the gradient nanoporous structures of the substrates

the produced PEI/PAA membranes exhibit a permeance up to 506 L·m

-2

·h

-1

·MPa

-1

which is ~2-10 times higher than that of other membranes with similar rejections. The PEI/PAA membranes are capable of retaining 96.1% of negatively charged dyes following the mechanism of electrostatic repulsion. We demonstrate that the membranes can also separate positively and neutr

ally charged dyes from water via other mechanisms. This work opens a new avenue for the design and preparation of high-flux NF membranes

which is also applicable to enhance the permeance of other TFC membranes.

关键词

Keywords

references

浏览量

Downloads

CSCD

文章被引用时，请邮件提醒。

Submit

工具集

关联资源

Novel polyamide nanofiltration membrane through Fe3+-tannic acid coordinated reverse interfacial polymerization for high-efficiency Mg2+/Li+ separation

Tannic acid/Fe3+ interlayer for preparation of high-permeability polyetherimide organic solvent nanofiltration membranes for organic solvent separation

Fabrication of anti-fouling polyamide nanofiltration membrane by incorporating streptomycin as a novel co-monomer

Surface modification of polypiperazine-amide membrane by self-assembled method for dye wastewater treatment

Research on the electrostatic spray characteristics of ethanol/n-butanol blended fuels