Pore surface engineering in porous, chemically stable covalent organic frameworks for water adsorption

TitlePore surface engineering in porous, chemically stable covalent organic frameworks for water adsorption
Publication TypeJournal Article
Year of Publication2015
AuthorsBiswal, BP, Kandambeth, S, Chandra, S, Shinde, DBalaji, Bera, S, Karak, S, Garai, B, Kharul, UK, Banerjee, R
JournalJournal of Materials Chemistry A
Volume3
Issue47
Pagination23664-23669
Date PublishedNOV
ISSN2050-7488
Abstract

Herein, we have explored the possibility of a class of covalent organic frameworks (COFs) as water adsorbing materials. We have selected, synthesized 12 chemically stable functionalized Schiff base COFs and thoroughly studied their water uptake behaviour. Further, a deep understanding was developed with these COFs towards the effects of condensation pressure of water and hydrophilic/hydrophobic groups present in the COF pores on water absorption capacity and ultimately, their recyclability. Among all reported COFs, TpPa-1 shows the highest water uptake of 30 wt% (368 cm(3) g(-1); 17 mmol g(-1)) at P/P-0 = 0.3, which is also comparable with the recently reported carbon materials and few well known MOFs. This study also reveals that the overall water uptake of COFs can be tuned systematically based on chemical functionality and pore size in a wider window of relative pressures.

DOI10.1039/c5ta07998e
Type of Journal (Indian or Foreign)

Foreign

Impact Factor (IF)

8.262

Divison category: 
Physical and Materials Chemistry
Polymer Science & Engineering