• Complex
  • Title
  • Keyword
  • Abstract
  • Scholars
  • Journal
  • ISSN
  • Conference
成果搜索

author:

Yang, Yixin (Yang, Yixin.) [1] | Li, Guorong (Li, Guorong.) [2] | Ouyang, Dan (Ouyang, Dan.) [3] | Cai, Zongwei (Cai, Zongwei.) [4] | Lin, Zian (Lin, Zian.) [5] (Scholars:林子俺)

Indexed by:

EI Scopus SCIE

Abstract:

Covalent organic frameworks (COFs) hold great promise in constructing a new-generation of molecular sepa-ration membranes. Significantly, ionic COF membranes endow novel functions distinct from those of neutral membranes. However, ionic COF membranes generally suffer from extremely slow reaction rates and low yields, limiting their widespread application. In this work, a self-standing anionic COF membrane was prepared by a dual-activation interfacial polymerization strategy. And the obtained anionic COF membrane possessed a unique ordered pore structure, superhydrophilicity, as well as good chemical stability. Meanwhile, the as-prepared membrane provided the high-efficiency water transport pathways with effective rejection for dye molecules. As expected, the anionic COF membrane exhibited an excellent water permeability of about 270 L m-2 h-1 bar- 1, which was much higher than those of commercial nanofiltration membranes, and also approximately 2-15 times significantly higher than those reported for polymer-or neutral COF-based nanofiltration membranes with similar rejection. Owing to the electrostatic attraction between positively charged dyes and anionic COF chan-nels, the rejection rates of cationic dyes were above 96 %. In addition, the size-exclusion effect dominated rejection efficiency of dyes with molecular sizes larger than COF channels. These findings provided a new candidate membrane for efficient dye wastewater treatment.

Keyword:

Anionic membranes Covalent organic frameworks Dye separation Nanofiltration

Community:

  • [ 1 ] [Yang, Yixin]Fuzhou Univ, Coll Chem, Fujian Prov Key Lab Anal & Detect Technol Food Saf, Minist Educ,Key Lab Analyt Sci Food Safety & Biol, Fuzhou 350116, Fujian, Peoples R China
  • [ 2 ] [Li, Guorong]Fuzhou Univ, Coll Chem, Fujian Prov Key Lab Anal & Detect Technol Food Saf, Minist Educ,Key Lab Analyt Sci Food Safety & Biol, Fuzhou 350116, Fujian, Peoples R China
  • [ 3 ] [Ouyang, Dan]Fuzhou Univ, Coll Chem, Fujian Prov Key Lab Anal & Detect Technol Food Saf, Minist Educ,Key Lab Analyt Sci Food Safety & Biol, Fuzhou 350116, Fujian, Peoples R China
  • [ 4 ] [Lin, Zian]Fuzhou Univ, Coll Chem, Fujian Prov Key Lab Anal & Detect Technol Food Saf, Minist Educ,Key Lab Analyt Sci Food Safety & Biol, Fuzhou 350116, Fujian, Peoples R China
  • [ 5 ] [Cai, Zongwei]Hong Kong Baptist Univ, Dept Chem, State Key Lab Environm & Biol Anal, Kowloon Tong, 224 Waterloo Rd, Hong Kong 999077, Peoples R China
  • [ 6 ] [Lin, Zian]Fuzhou Univ, Coll Chem, Fuzhou 350108, Fujian, Peoples R China

Reprint 's Address:

  • [Lin, Zian]Fuzhou Univ, Coll Chem, Fuzhou 350108, Fujian, Peoples R China;;

Show more details

Related Keywords:

Source :

CHEMICAL ENGINEERING JOURNAL

ISSN: 1385-8947

Year: 2022

Volume: 456

1 5 . 1

JCR@2022

1 3 . 4 0 0

JCR@2023

ESI Discipline: ENGINEERING;

ESI HC Threshold:66

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count: 30

SCOPUS Cited Count: 31

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 3

Online/Total:248/10013928
Address:FZU Library(No.2 Xuyuan Road, Fuzhou, Fujian, PRC Post Code:350116) Contact Us:0591-22865326
Copyright:FZU Library Technical Support:Beijing Aegean Software Co., Ltd. 闽ICP备05005463号-1