Suter, TM;
Miller, TS;
Cockcroft, JK;
Aliev, AE;
Wilding, MC;
Sella, A;
Cora, F;
... McMillan, PF; + view all
(2019)
Formation of an ion-free crystalline carbon nitride and its reversible intercalation with ionic species and molecular water.
Chemical Science
, 10
(8)
pp. 2519-2528.
10.1039/c8sc05232h.
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Abstract
The development of processes to tune the properties of materials is essential for the progression of nextgeneration technologies for catalysis, optoelectronics and sustainability including energy harvesting and conversion. Layered carbon nitrides have also been identified as of significant interest within these fields of application. However, most carbon nitride materials studied to date have poor crystallinity and therefore their properties cannot be readily controlled or easily related to their molecular level or nanoscale structures. Here we report a process for forming a range of crystalline layered carbon nitrides with polytriazine imide (PTI) structures that can be interconverted by simple ion exchange processes, permitting the tunability of their optoelectronic and chemical properties. Notable outcomes of our work are (a) the creation of a crystalline, guest-ion-free PTI compound that (b) can be re-intercalated with ions or molecules using “soft chemistry” approaches. This includes the intercalation of HCl, demonstrating a new ambient pressure route to the layered PTI$xHCl material that was previously only available by a high-pressure-high-temperature route (c). Our work also shows (d) that the intercalantfree (IF-) PTI material spontaneously absorbs up to 10 weight% H2O from the ambient atmosphere and that this process is reversible, leading to potential applications for membranes and water capture in dry environments
| Type: | Article |
|---|---|
| Title: | Formation of an ion-free crystalline carbon nitride and its reversible intercalation with ionic species and molecular water |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1039/c8sc05232h |
| Publisher version: | https://doi.org/10.1039/c8sc05232h |
| Language: | English |
| Additional information: | This work is licensed under a Creative Commons Attribution 3.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/3.0/ |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10069863 |
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