Zirconium-based MOFs and their biodegradable polymer composites for controlled and sustainable delivery of herbicides
dc.contributor.author | Mahmoud, L.A.M. | |
dc.contributor.author | Telford, Richard | |
dc.contributor.author | Livesey, T.C. | |
dc.contributor.author | Katsikogianni, Maria G. | |
dc.contributor.author | Kelly, Adrian L. | |
dc.contributor.author | Terry, L.R. | |
dc.contributor.author | Ting, V.P. | |
dc.contributor.author | Nayak, Sanjit | |
dc.date.accessioned | 2022-08-19T08:16:58Z | |
dc.date.available | 2022-08-19T08:16:58Z | |
dc.date.issued | 2022-07-29 | |
dc.identifier.citation | Mahmoud LAM, Telford R, Livesey TC et al (2022) Zirconium-based MOFs and their biodegradable polymer composites for controlled and sustainable delivery of herbicides. ACS Applied Bio Materials. 5(8): 3972-3981. | en_US |
dc.identifier.uri | http://hdl.handle.net/10454/19105 | |
dc.description | Yes | en_US |
dc.description.abstract | Adsorption and controlled release of agrochemicals has been studied widely using different nanomaterials and a variety of formulations. However, the potential for application of high surface-area metal-organic frameworks (MOFs) for the controlled release of agrochemicals has not been thoroughly explored. Herein, we report controlled and sustainable release of a widely used herbicide (2-methyl-4-chlorophenoxyacetic acid, MCPA) via incorporation in a range of zirconium-based MOFs and their biodegradable polymer composites. Three Zr-based MOFs, viz., UiO-66, UiO-66-NH2, and UiO-67 were loaded with MCPA either postsynthetically or in situ during synthesis of the MOFs. The MCPA-loaded MOFs were then incorporated into a biodegradable polycaprolactone (PCL) composite membrane. All three MOFs and their PCL composites were thoroughly characterized using FT-IR, TGA, SEM, PXRD, BET, and mass spectrometry. Release of MCPA from each of these MOFs and their PCL composites was then studied in both distilled water and in ethanol for up to 72 h using HPLC. The best performance for MCPA release was observed for the postsynthetically loaded MOFs, with PS-MCPA@UiO-66-NH2 showing the highest MCPA concentrations in ethanol and water of 0.056 and 0.037 mg/mL, respectively. Enhanced release of MCPA was observed in distilled water when the MOFs were incorporated in PCL. The concentrations of herbicides in the release studies provide us with a range of inhibitory concentrations that can be utilized depending on the crop, making this class of composite materials a promising new route for future agricultural applications. | en_US |
dc.description.sponsorship | L.A.M.M. and S.N. acknowledge funding for a studentship by the Erasmus+ KA107 Student Mobility programme. V.P.T and L.R.T. acknowledge funding from the EPSRC (EP/R01650X/1) | en_US |
dc.language.iso | en | en_US |
dc.relation.isreferencedby | https://pubs.acs.org/doi/10.1021/acsabm.2c00499 | en_US |
dc.rights | © 2022 The Authors. Published by American Chemical Society. This work is licensed under a Creative Commons Attribution 4.0 International License. http://creativecommons.org/licenses/by/4.0/ | en_US |
dc.subject | MOF | en_US |
dc.subject | Composite | en_US |
dc.subject | Zirconium | en_US |
dc.subject | MCPA | en_US |
dc.subject | Agriculture | en_US |
dc.subject | Pesticide | en_US |
dc.title | Zirconium-based MOFs and their biodegradable polymer composites for controlled and sustainable delivery of herbicides | en_US |
dc.status.refereed | Yes | en_US |
dc.date.Accepted | 2022-07-21 | |
dc.date.application | 2022-07-29 | |
dc.type | Article | en_US |
dc.type.version | Published version | en_US |
dc.rights.license | CC-BY | en_US |
refterms.dateFOA | 2022-08-19T08:18:22Z | |
dc.openaccess.status | openAccess | en_US |