Article (Scientific journals)
A new and highly robust light-responsive Azo-UiO-66 for highly selective and low energy post-combustion CO2 capture and its application in a mixed matrix membrane for CO2/N2 separation
Prasetya, Nicholaus; Donose, Bogdan C.; LADEWIG, Bradley Paul
2018In Journal of Materials Chemistry A, 6 (34), p. 16390 - 16402
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Keywords :
Azobenzene group; CO2 separation; ITS applications; Membrane performance; Mixed matrix membranes; Photoswitching; Post-combustion; Robust generation; Chemistry (all); Renewable Energy, Sustainability and the Environment; Materials Science (all)
Abstract :
[en] A new and robust generation-2 light-responsive MOF with UiO-66 topology applicable for post combustion CO2 capture has been successfully synthesized and is described in this article. Azo-UiO-66 shows a satisfactory performance for CO2/N2 separation as observed through high CO2/N2 selectivity. Furthermore, due to the presence of azobenzene groups, Azo-UiO-66 also exhibits a very efficient CO2 photoswitching uptake, a characteristic that has never been observed in any generation-2 light-responsive MOF. Combined together with its robust character, this makes Azo-UiO-66 a promising candidate for highly selective and low energy CO2 capture applications. To further apply this material, Azo-UiO-66 was incorporated in Matrimid to form mixed matrix membranes (MMM). Composites with up to 20 wt% of Azo-UiO-66 were fabricated and tested. The resulting MMM showed increased performance in terms of CO2 permeability and CO2/N2 selectivity compared with the similar MOF-based MMM composites. This then shows another promising application of Azo-UiO-66 as a filler to enhance polymeric membrane performance for CO2 separation.
Disciplines :
Chemical engineering
Author, co-author :
Prasetya, Nicholaus;  Barrer Centre, Department of Chemical Engineering, Imperial College London, London, United Kingdom
Donose, Bogdan C.;  School of Chemical Engineering, University of Queensland, St. Lucia, Australia
LADEWIG, Bradley Paul  ;  University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE) ; Barrer Centre, Department of Chemical Engineering, Imperial College London, London, United Kingdom
External co-authors :
yes
Language :
English
Title :
A new and highly robust light-responsive Azo-UiO-66 for highly selective and low energy post-combustion CO2 capture and its application in a mixed matrix membrane for CO2/N2 separation
Publication date :
2018
Journal title :
Journal of Materials Chemistry A
ISSN :
2050-7488
eISSN :
2050-7496
Publisher :
Royal Society of Chemistry
Volume :
6
Issue :
34
Pages :
16390 - 16402
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
Imperial College London
Funding text :
BASF kindly provided ZIF-8 used in this study for the control experiment of CO2 adsorption. Huntsman kindly provided the Matrimid used in this study for membrane fabrication. The assistance of Dr Piers Gaffney to improve the ligand synthesis is acknowledged. The assistance of Ms Patricia Carry and Mr Kaho Cheung with various analytical techniques used in this study is also acknowledged. N. P. acknowledges the PhD scholarship funding from Chemical Engineering Department, Imperial College London. The authors also acknowledge the facilities and the scientic and technical assistance of the Australian Microscopy & Microanalysis Research Facility at the Centre for Microscopy and Microanalysis (The University of Queensland).
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