Fe3O4@UiO-66-NH2 based on magnetic solid phase extraction for determination of organic UV filters in environmental water samples

Hejji, Lamia; Azzouz, Abdelmonaim; Pérez-Villarejo, Luis; Castro, Eulogio; Souhail, Badredine; Rodríguez-Castellón, Enrique

doi:10.1016/j.chemosphere.2023.140090

Cited by 4 publications

(1 citation statement)

References 56 publications

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“…Additionally, our protocol displayed a significant advantage in extraction time. While other studies reported extraction times ranging from 20 to 33 min, − our protocol required only 5 min, indicating higher time efficiency. Furthermore, compared to the method by Xu et al utilizing SiO 2 @PD-Ti 4+ for the analysis of SPx ( q max : 26.88–31.85 mg·g –1 ), HP-UiO-66-NH 2 -10 achieved lower detection limits and larger adsorption capacities ( q max : 166.3–292.3 mg·g –1 , 5–7 times).…”

Section: Resultsmentioning

confidence: 80%

Highly Defective Zirconium-Based Metal–Organic Frameworks for the Efficient Adsorption and Detection of Sugar Phosphates in the Biological Sample

Feng,

Hu,

Wang

et al. 2024

ACS Appl. Mater. Interfaces

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Enrichment and quantification of sugar phosphates (SPx) in biological samples were of great significance in biological medicine. In this work, a series of zirconium-based metal−organic frameworks (MOFs) with different degrees of defects, namely, HP-UiO-66-NH 2 -X, were synthesized using acetic acid as a modulator and were utilized as high-capacity adsorbents for the adsorption of SPx in biological samples. The results indicated that the addition of acetic acid altered the morphology of HP-UiO-66-NH 2 -X, with corresponding changes in pore size (3.99−9.28 nm) and specific surface area (894.44−1142.50 m 2 •g −1 ). HP-UiO-66-NH 2 -10 showed the outstanding performance by achieving complete adsorption of all four SPx using only 80 μg of the adsorbent. The excellent adsorption efficiency of HP-UiO-66-NH 2 -10 was also obtained with a wide pH range and short adsorption time (10 min). Adsorption experiments demonstrated that the adsorption process involved chemical adsorption and multilayer adsorption. By utilizing X-ray photoelectron spectroscopy and density functional theory to explain the adsorption mechanism, it was found that various interactions (including coordination, hydrogen bonding, and electrostatic interactions) collectively contributed to the exceptional adsorption capability of HP-UiO-66-NH 2 -10. Those results indicated that the defect strategy not only increased the specific surface area and pore size, providing additional adsorption sites, but also reduced the adsorption energy between HP-UiO-66-NH 2 -10 and SPx. Moreover, HP-UiO-66-NH 2 -10 showed a low limit of detection (0.001−0.01 ng•mL −1 ), high precision (<13.77%), and accuracy (80.10−111.83%) in serum, liver, and cells, good stability, high selectivity (SPx/glucose, 1:100 molar ratio), and high adsorption capacity (292 mg•g −1 for SPx). The practical detection of SPx from human serum was also verified, prefiguring the great potentials of defective zirconium-based MOFs for the enrichment and detection of SPx in the biological medicine.

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