Core-shell microparticles formed by the metal-organic framework CIM-80(Al) (Silica@CIM-80(Al)) as sorbent material in miniaturized dispersive solid-phase extraction

Gutiérrez‐Serpa, Adrián; Jiménez‐Abizanda, Ana I.; Jiménez-Moreno, Francisco; Pasán, Jorge; Pino, Verónica

doi:10.1016/j.talanta.2020.120723

Cited by 23 publications

(7 citation statements)

References 35 publications

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“…The crystallinity of the synthesized materials was examined by X-ray diffraction in the 2θ range of 3–40° (XRD), as shown in Figure 2 . The peaks identified for samples CIM-80_2, CIM-80_4, CIM-80_6 and CIM-80_7.5 are characteristic of MOF CIM-80, as reported in previous studies [ 32 , 33 ]. The samples CIM-80_10 and CIM-80_10_CTAB present broader diffraction peaks, which indicate some decrease in particle size and less crystallinity in the material obtained; these peaks as reported in the literature [ 34 ] are characteristic of boehmite (AlO(OH)).…”

Section: Resultssupporting

confidence: 81%

“…The synthesis of the aluminum mesaconate was developed following the procedure described by Adrian Gutierrez-Serpa [ 33 ]. For this purpose, a mixture of mesaconic acid (99%) (4 mmol; 520 mg) and aluminum nitrate nonahydrate (98%) (4 mmol; 1500 mg) in 60 mL of deionized water (18.2 MΩ.cm Millipore ® Milli-Q ® water, Merck, Darmstadt, Germany) with urea (99%) (2 mmol to 10 mmol) was made with constant stirring for 20 min.…”

Section: Methodsmentioning

confidence: 99%

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Synthesis and Characterization of the Metal–Organic Framework CIM-80 for Organic Compounds Adsorption

2022

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Metal–organic frameworks (MOF) are a new type of porous materials that have great potential for adsorption of voltaic organic compounds (VOCs). These types of materials composed of metal ions and organic ligands are easy to synthesize, have high surface areas, their surface chemistry can be adjusted to the desired application, and they can also have good chemical and thermal stability. Therefore, this work focuses on the synthesis of a highly hydrophobic MOF material called CIM-80, a porous material that is made up of the Al3+ cation and the mesaconate linker. This MOF has a B.E.T. of approximately 800 m2/g and has potential applications for the adsorption of hydrophobic organic compounds. However, its synthesis is expensive and very dirty. Therefore, we have studied the synthesis conditions necessary to achieve high synthesis yields (85%) and materials with high crystallinity and accessible porosity. To achieve these results, we have used urea as a mild deprotonation reagent and modulator as an alternative to NaOH, which is traditionally used for the synthesis of this MOF. Once the synthesis of this material was controlled, its adsorption/desorption behavior of water and organic compounds such as toluene, cyclohexane and m-xylene was studied by means of vapor adsorption isotherms. The results show the hydrophobic character of the material and the greater affinity the material has toward aliphatic compounds than toward aromatic ones, with toluene being the most adsorbed compound, followed by cyclohexane and m-xylene.

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Section: Resultssupporting

confidence: 81%

Section: Methodsmentioning

confidence: 99%

Synthesis and Characterization of the Metal–Organic Framework CIM-80 for Organic Compounds Adsorption

2022

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“…Given the interest of composites, researchers have started to merge MOF crystals with other materials, attempting to mitigate the weakest points of their single neat components through the combination of their best properties. Thus, different MOF-based composites and hybrid materials have been reported by incorporating them into inorganic materials (mesoporous silica) [ 21 , 22 ], polymers [ 23 , 24 ], metal oxide particles [ 25 , 26 ], and carbonaceous materials such as graphene oxide, carbon nanotubes, etc., [ 25 , 27 ]. This advance has made possible the design of sorbent materials with novel physicochemical features that lead to an enhancement of MOFs extraction performance by giving them higher structural support, by protecting their pores, or even by providing them with hydrophobicity and magnetic properties.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Materials Formed with Green Metal-Organic Frameworks and Polystyrene as Sorbents in Dispersive Micro-Solid-Phase Extraction for Determining Personal Care Products in Micellar Cosmetics

et al. 2022

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Hybrid materials based on polystyrene (PS) and green metal-organic frameworks (MOFs) were synthesized, characterized, and evaluated as potential sorbents in dispersive micro-solid-phase extraction (µ-dSPE). Among the resulting materials, the hybrid PS/DUT-67(Zr) was selected as the adequate extraction material for the monitoring of six personal care products in micellar cosmetic samples, combining the µ-dSPE method with ultra-high performance liquid chromatography (UHPLC) coupled to ultraviolet/visible detection (UV/Vis). Univariate studies and a factorial design were performed in the optimization of the microextraction procedure. The compromise optimum extraction conditions included 20 mg of PS/DUT-67(Zr) for 10 mL of sample, 2 min of extraction time, and two desorption steps using 100 µL of acetonitrile and 5 min assisted by vortex in each one. The validated μ-dSPE-UHPLC-UV/Vis method presented limits of detection and quantification down to 3.00 and 10.0 μg·L−1, respectively. The inter-day precision values were lower than 23.5 and 21.2% for concentration levels of 75 μg·L−1 and 650 μg·L−1, respectively. The hydrophobicity of the resulting PS/DUT-67(Zr) material was crucial for the improvement of its extraction capacity in comparison with its unitary components, showing the advantages of combining MOFs with other materials, getting new sorbents with interesting properties.

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“…The MOF-hybrid material was applied to dispersive miniaturized solid-phase extraction (D-µSPE) by ultra-high-performance liquid chromatography. The authors synthesized core-shell shaped SiO 2 @MOF microspheres for the measurement of 14 kinds of polycyclic aromatic hydrocarbons (PAHs) in wastewaters [65]. Jiang [66] reported a magnetic MOF-hybrid material for acarbose detection in rat plasma.…”

Section: The Harnessing Of Mofs and Their Hybrid Materialsmentioning

confidence: 99%

Recent Progress on Luminescent Metal-Organic Framework-Involved Hybrid Materials for Rapid Determination of Contaminants in Environment and Food

et al. 2020

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The high speed of contaminants growth needs the burgeoning of new analytical techniques to keep up with the continuous demand for monitoring and legislation on food safety and environmental pollution control. Metal-organic frameworks (MOFs) are a kind of advanced crystal porous materials with controllable apertures, which are self-assembled by organic ligands and inorganic metal nodes. They have the merits of large specific surface areas, high porosity and the diversity of structures and functions. Latterly, the utilization of metal-organic frameworks has attracted much attention in environmental protection and the food industry. MOFs have exhibited great value as sensing materials for many targets. Among many sensing methods, fluorometric sensing is one of the widely studied methods in the detection of harmful substances in food and environmental samples. Fluorometric detection based on MOFs and its functional materials is currently one of the most key research subjects in the food and environmental fields. It has gradually become a hot research direction to construct the highly sensitive rapid sensors to detect harmful substances in the food matrix based on metal-organic frameworks. In this paper, we introduced the synthesis and detection application characteristics (absorption, fluorescence, etc.) of metal-organic frameworks. We summarized their applications in the MOFs-based fluorometric detection of harmful substances in food and water over the past few years. The harmful substances mainly include heavy metals, organic pollutants and other small molecules, etc. On this basis, the future development and possible application of the MOFs have prospected in this review paper.

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Core-shell microparticles formed by the metal-organic framework CIM-80(Al) (Silica@CIM-80(Al)) as sorbent material in miniaturized dispersive solid-phase extraction

Cited by 23 publications

References 35 publications

Synthesis and Characterization of the Metal–Organic Framework CIM-80 for Organic Compounds Adsorption

Synthesis and Characterization of the Metal–Organic Framework CIM-80 for Organic Compounds Adsorption

Hybrid Materials Formed with Green Metal-Organic Frameworks and Polystyrene as Sorbents in Dispersive Micro-Solid-Phase Extraction for Determining Personal Care Products in Micellar Cosmetics

Recent Progress on Luminescent Metal-Organic Framework-Involved Hybrid Materials for Rapid Determination of Contaminants in Environment and Food

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