Kinetic adsorption mechanism of cobalt(II) ions and Congo red on pristine and Schiff base-surface-modified MIL-101(Fe)-NH2
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F25%3A00616794" target="_blank" >RIV/61389013:_____/25:00616794 - isvavai.cz</a>
Alternative codes found
RIV/61988987:17310/25:A2603ANS
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S1387181125000071?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1387181125000071?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.micromeso.2025.113493" target="_blank" >10.1016/j.micromeso.2025.113493</a>
Alternative languages
Result language
angličtina
Original language name
Kinetic adsorption mechanism of cobalt(II) ions and Congo red on pristine and Schiff base-surface-modified MIL-101(Fe)-NH2
Original language description
This study investigates the adsorption kinetics of heavy metal ions (Co(II)) and azo dye (Congo red) using surface-modified MIL-101(Fe)-NH2. The material's large surface area and dual pore structure enhance adsorption performance, making it suitable for environmental applications. The MIL-101(Fe)-NH2 material was synthesized and further modified with 2-pyridinecarboxaldehyde to create MIL-101(Fe)-Pyr with the aim of enhancing the adsorption properties. Characterization techniques, including FTIR, TG/DTA, ss-NMR, XPS, N2 adsorption/desorption measurements, and PXRD, confirmed the structural integrity and functionalization of the materials. Kinetic studies revealed that MIL-101(Fe)-Pyr demonstrated superior adsorption capacity and faster kinetics for Co(II) ions compared to pristine MIL-101(Fe)-NH2. The adsorption mechanisms were analyzed using pseudo-first-order, pseudo-second-order, and Elovich models. The pseudo-second-order model provided the best fit for both Co(II) and Congo red adsorption. Boyd's diffusion model indicated that external diffusion is a significant rate-controlling step. The adsorption isotherms were fitted with the Freudlich and Langmuir models, and the thermodynamics of the adsorption processes were also studied. The adsorption mechanism of the selected pollutants was proposed, and the stability and reusability of the materials were investigated. The study concludes that surface modifications enhance the material's adsorption properties, making MIL-101(Fe)-Pyr a promising adsorbent for removing pollutants from aqueous environments.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10404 - Polymer science
Result continuities
Project
<a href="/en/project/LUASK22049" target="_blank" >LUASK22049: Monolithic, hierarchically porous MOF-carbon composites for environmental applications</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Microporous and Mesoporous Materials
ISSN
1387-1811
e-ISSN
1873-3093
Volume of the periodical
386
Issue of the periodical within the volume
15 March
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
18
Pages from-to
113493
UT code for WoS article
001401504700001
EID of the result in the Scopus database
2-s2.0-85214958508