Detection of SO <sub>2</sub> using a hybrid LDH-MOF material
A hybrid MgAlFe-LDH/UiO-66-NH<sub>2</sub> material has been developed for the efficient detection of SO<sub>2</sub>, showing an exceptionally low detection limit of only 0.72 ppm, which is considerably lower in comparison to UiO-66-NH<sub>2</sub> (739 ppm). Spectroscopic studies suggest that the preferential oxidation of SO<sub>2</sub> to SO<sub>4</sub><sup>2-</sup>, catalysed by the Fe<sup>3+</sup> centres within MgAlFe-LDH, is the key factor in the enhanced fluorescence response. This process <i>in situ</i> generates Fe<sup>2+</sup> sites and favours the interlaminar sequestration of SO<sub>2</sub>, preventing direct interaction with the active sites of UiO-66-NH<sub>2</sub>.
Authors
- Enrique Lima (ORCID: https://orcid.org/0000-0002-5168-5981)
- Ilich A. Ibarra (ORCID: https://orcid.org/0000-0002-8573-8033)
- José Ortíz-Landeros (ORCID: https://orcid.org/0000-0002-8319-7448)
- Diego Solís-Ibarra (ORCID: https://orcid.org/0000-0002-2486-0967)
- J.A. de los Reyes (ORCID: https://orcid.org/0000-0003-1962-9848)
- Ariel Guzmán‐Vargas (ORCID: https://orcid.org/0000-0002-2213-1242)
- Marcela Martı́nez (ORCID: https://orcid.org/0000-0002-6236-7903)
- L. Huerta (ORCID: https://orcid.org/0000-0001-5398-6262)
- Andrés de Luna Bugallo (ORCID: https://orcid.org/0000-0002-7591-5235)
- Juan Andrés Flores-Aguilar (ORCID: https://orcid.org/0009-0002-0287-9082)
- Antonio Hernández-Monsalvo (ORCID: https://orcid.org/0009-0003-9930-285X)
- Valeria B. López‐Cervantes
Institutions
- Universidad Autónoma Metropolitana (MX)
- Instituto Politécnico Nacional (MX)
- Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (MX)
- Universidad Nacional Autónoma de México (MX)
Publication Details
- Journal
- Chemical Communications
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1039/d5cc03612g
- Primary Topic
- Advanced Chemical Sensor Technologies
- Type
- article
- Field-Weighted Citation Impact
- 0.00