New Insights on Iron-Trimesate MOFs for Inorganic As(III) and As(V) Adsorption from Aqueous Media
Arsenic contamination of water endangers the health of millions of people worldwide, affecting certain countries and regions with especial severity. Interest in the use of Fe-based metal organic frameworks (MOFs) to remove inorganic arsenic species has increased due to their stability and adsorptive...
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2024-12-01
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| author | Afef Azri Marwa Ben Amar Khaled Walha Clàudia Fontàs José Elías Conde-González Victoria Salvadó Eladia M. Peña-Méndez |
| author_facet | Afef Azri Marwa Ben Amar Khaled Walha Clàudia Fontàs José Elías Conde-González Victoria Salvadó Eladia M. Peña-Méndez |
| author_sort | Afef Azri |
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| description | Arsenic contamination of water endangers the health of millions of people worldwide, affecting certain countries and regions with especial severity. Interest in the use of Fe-based metal organic frameworks (MOFs) to remove inorganic arsenic species has increased due to their stability and adsorptive properties. In this study, the performance of a synthesized Nano-{Fe-BTC} MOF, containing iron oxide octahedral chains connected by trimesic acid linkers, in adsorbing As(III) and As(V) species was investigated and compared with commercial Basolite<sup>®</sup>F300 MOF. Despite their similarities in composition, they exhibit distinct structural characteristics in their porosity, pore size, and surface areas, which affected the adsorption processes. The kinetic data of the adsorption of As(III) and As(V) by both Fe-MOFs fitted the pseudo second-order model well, with the kinetic constant being higher for Basolite<sup>®</sup>F300 given its higher porosity. Intraparticle diffusion was, in both cases, the rate controlling step with the contribution of film diffusion in the adsorption processes, which achieved equilibrium after 1 h. The maximum adsorption capacity for As(V), 41.66 mg g<sup>−1</sup>, was obtained with Basolite<sup>®</sup>F300 at the 6.5–10 pH range, whereas Nano-{Fe-BTC} showed a different behaviour as maximum adsorption (14.99 mg g<sup>−1</sup>) was obtained at pH 2. However, both adsorbents exhibited the same performance for As(III) adsorption, which is not adsorbed at pH < 9. The Langmuir adsorption isotherm model fitted well for As(III) and As(V) adsorption by Nano-{Fe-BTC} and As(III) by Basolite<sup>®</sup>F300, whereas the Freundlich model fitted best for As(V) given its superior structural properties. |
| format | Article |
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| institution | Kabale University |
| issn | 2079-4991 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
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| series | Nanomaterials |
| spelling | doaj-art-52b0863f084c4ee0a34c380654be7faa2025-01-10T13:19:19ZengMDPI AGNanomaterials2079-49912024-12-011513610.3390/nano15010036New Insights on Iron-Trimesate MOFs for Inorganic As(III) and As(V) Adsorption from Aqueous MediaAfef Azri0Marwa Ben Amar1Khaled Walha2Clàudia Fontàs3José Elías Conde-González4Victoria Salvadó5Eladia M. Peña-Méndez6Department de Química, Facultat de Ciències, Universitat de Girona, C/Mª Aurèlia Capmany, 69, 17003 Girona, SpainDepartment de Química, Facultat de Ciències, Universitat de Girona, C/Mª Aurèlia Capmany, 69, 17003 Girona, SpainLaboratory of Material Sciences and Environment, Faculty of Sciences, University of Sfax, Route de la Soukra Km 3.5, BP 1171, Sfax 3000, TunisiaDepartment de Química, Facultat de Ciències, Universitat de Girona, C/Mª Aurèlia Capmany, 69, 17003 Girona, SpainUnidad Departamental de Química Analítica, Departamento de Química, Facultad de Ciencias, Universidad de La Laguna, Avda. Astrofísico Fco. Sánchez, s/n, 38206 La Laguna, SpainDepartment de Química, Facultat de Ciències, Universitat de Girona, C/Mª Aurèlia Capmany, 69, 17003 Girona, SpainUnidad Departamental de Química Analítica, Departamento de Química, Facultad de Ciencias, Universidad de La Laguna, Avda. Astrofísico Fco. Sánchez, s/n, 38206 La Laguna, SpainArsenic contamination of water endangers the health of millions of people worldwide, affecting certain countries and regions with especial severity. Interest in the use of Fe-based metal organic frameworks (MOFs) to remove inorganic arsenic species has increased due to their stability and adsorptive properties. In this study, the performance of a synthesized Nano-{Fe-BTC} MOF, containing iron oxide octahedral chains connected by trimesic acid linkers, in adsorbing As(III) and As(V) species was investigated and compared with commercial Basolite<sup>®</sup>F300 MOF. Despite their similarities in composition, they exhibit distinct structural characteristics in their porosity, pore size, and surface areas, which affected the adsorption processes. The kinetic data of the adsorption of As(III) and As(V) by both Fe-MOFs fitted the pseudo second-order model well, with the kinetic constant being higher for Basolite<sup>®</sup>F300 given its higher porosity. Intraparticle diffusion was, in both cases, the rate controlling step with the contribution of film diffusion in the adsorption processes, which achieved equilibrium after 1 h. The maximum adsorption capacity for As(V), 41.66 mg g<sup>−1</sup>, was obtained with Basolite<sup>®</sup>F300 at the 6.5–10 pH range, whereas Nano-{Fe-BTC} showed a different behaviour as maximum adsorption (14.99 mg g<sup>−1</sup>) was obtained at pH 2. However, both adsorbents exhibited the same performance for As(III) adsorption, which is not adsorbed at pH < 9. The Langmuir adsorption isotherm model fitted well for As(III) and As(V) adsorption by Nano-{Fe-BTC} and As(III) by Basolite<sup>®</sup>F300, whereas the Freundlich model fitted best for As(V) given its superior structural properties.https://www.mdpi.com/2079-4991/15/1/36inorganic arsenic speciesiron-trimesate MOFsadsorptionporosity |
| spellingShingle | Afef Azri Marwa Ben Amar Khaled Walha Clàudia Fontàs José Elías Conde-González Victoria Salvadó Eladia M. Peña-Méndez New Insights on Iron-Trimesate MOFs for Inorganic As(III) and As(V) Adsorption from Aqueous Media Nanomaterials inorganic arsenic species iron-trimesate MOFs adsorption porosity |
| title | New Insights on Iron-Trimesate MOFs for Inorganic As(III) and As(V) Adsorption from Aqueous Media |
| title_full | New Insights on Iron-Trimesate MOFs for Inorganic As(III) and As(V) Adsorption from Aqueous Media |
| title_fullStr | New Insights on Iron-Trimesate MOFs for Inorganic As(III) and As(V) Adsorption from Aqueous Media |
| title_full_unstemmed | New Insights on Iron-Trimesate MOFs for Inorganic As(III) and As(V) Adsorption from Aqueous Media |
| title_short | New Insights on Iron-Trimesate MOFs for Inorganic As(III) and As(V) Adsorption from Aqueous Media |
| title_sort | new insights on iron trimesate mofs for inorganic as iii and as v adsorption from aqueous media |
| topic | inorganic arsenic species iron-trimesate MOFs adsorption porosity |
| url | https://www.mdpi.com/2079-4991/15/1/36 |
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