Glycine functionalised IEF-11: structural, optoelectronic and CO₂ sorption effects
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Supporting information
Author(s)
Chou, Vanessa Hui Yin
Sageer, Sharminaz
Ashbrook, Sharon
Petit, Camille
Type
Journal Article
Abstract
Carbon dioxide (CO2) emissions are the primary contributor of global warming, prompting the need for effective mitigation strategies. Developing new advanced functional materials through a deeper understanding of their fundamental properties is critical for enabling technologies aimed at carbon management. Metal–organic frameworks (MOFs), with their highly tunable structures and versatile physicochemical properties, offer significant potential for both CO2 capture via adsorption and CO2 conversion via catalytic reactions. Among these MOFs, the recently developed titanium-based MOF IEF-11 has emerged as a particularly interesting candidate owing to its visible-light bandgap and its potential as both an adsorbent and a photocatalyst. Enhancing the performance of IEF-11 in these fields requires a fundamental understanding of how its structural and optoelectronic features can be rationally engineered. In this context, targeted pre-synthetic modification, such as amine functionalisation, can provide an effective strategy to tune both its framework environment and optoelectronic characteristics. Herein, we investigated glycine-functionalised IEF-11 (IEF-11-Gly) and elucidated the resulting changes in its structure, chemistry, optoelectronic and CO2 sorption behaviour. We showed that varying amounts of glycine molecules were successfully incorporated into the IEF-11, leading to a >2-fold increase in Brunauer–Emmett–Teller (BET) area and CO2 uptake. In addition, we found that the bandgaps (Eg ∼ 2.6 eV) and tunable electronic band structures of IEF-11-Gly samples are well-suited for CO2 photoreduction, while their particles shape change depending on the degree of functionalisation. Our work demonstrates how amine functionalised IEF-11 can be rationally designed to produce tailored frameworks, providing insights that may be relevant to guiding heterojunction formation and photocatalysis.
Date Issued
2026-08-17
Date Acceptance
2026-07-09
Citation
Materials Advances, 2026, 7 (16), pp.8072-8084
ISSN
2633-5409
Publisher
The Royal Society of Chemistry
Start Page
8072
End Page
8084
Journal / Book Title
Materials Advances
Volume
7
Issue
16
Copyright Statement
© 2026 The Author(s). Published by the Royal Society of Chemistry This article is licensed under a Creative Commons Attribution 4.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.
License URL
Identifier
10.1039/d6ma00845c
Publication Status
Published
Date Publish Online
2026-07-14