Cobalt aluminate nanoparticles supported on MIL-101 structure: catalytic performance investigation

Granadeiro, Carlos M.; Karmaoui, Mohamed; Correia, Eva; Julião, Diana; Amaral, V. S.; Silva, Nuno J. O.; Cunha-Silva, Luı́s; Balula, Salete S.

doi:10.1039/c4ra10498f

Cited by 11 publications

(5 citation statements)

References 52 publications

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“…The comparison of NL with Cr(III)-MOF-NPs and MIL-101-Cr-MOF/CoAl-1@MIL(Cr) “reported by Granadeiro et al,” spectra is shown in Figure b. For Cr(III)-MOF-NPs, the peaks among 3715 and 3100 cm –1 are assigned to NH 2 and H 2 O molecules, respectively.…”

Section: Results and Discussionmentioning

confidence: 80%

“…The results were in tremendous consistency with that calculated theoretically for the proposed formula of monomeric Cr Fourier Transform Infrared. The comparison of NL with Cr(III)-MOF-NPs and MIL-101-Cr-MOF/CoAl-1@MIL(Cr) "reported by Granadeiro et al, 43 " spectra is shown in Figure 2b. For Cr(III)-MOF-NPs, the peaks among 3715 and 3100 cm −1 are assigned to NH 2 and H 2 O molecules, respectively.…”

Section: ■ Introductionmentioning

confidence: 99%

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Dual Naked-Eye and Optical Chemosensor for Morphine Detection in Biological Real Samples Based on Cr(III) Metal–Organic Framework Nanoparticles

Alhaddad

Sheta

2020

ACS Omega

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The analytical detection and quantification of abuse drugs such as morphine (MOR) in biological samples are vital missions and remains to attract challenges for forensic toxicology, law enforcement, world antidoping organization, and social health fields. MOR, a benchmark analgesic drug known as "pain killer", is one of the powerful opioid medications for relieving pain, and overdose of MOR is toxic. In this article, novel promising chromium metal−organic framework nanoparticles [Cr(III)-MOF-NPs] were produced via facile synthesis and characterized using high-resolution transmission electron microscopy, field-emission scanning electron microscopy/energy-dispersive X-ray spectroscopy, mass spectrometry, X-ray photoelectron spectroscopy, elemental analysis, UV−vis, Fourier transform infrared, and thermogravimetry/differential scanning calorimetry, as well as photoluminescence (PL) investigation and magnetic properties. The PL study results revealed that the Cr(III)-MOF-NPs exhibited an emission band at 593 nm. The Cr(III)-MOF-NPs could be used in fast, selective, and sensitive MOR detection and quantification. Under the optimum experimental conditions, with the addition of MOR, a blueshift from 593 to 566 nm occurred with a remarkable PL intensity enhancement, and the color changed from brown to yellow (visually/naked-eye detection). The Cr(III)-MOF-NPs optical chemosensor exhibited a stable response for MOR in a concentration range between 0.1 and 350 nM. The detection and quantification limits were 0.167 and 0.443 nM, respectively, with a correlation coefficient (r 2 ) of 0.96. The developed PL chemosensor showed high selectivity for MOR over other competing interfering matrices. Moreover, the ultrasensitive chemosensor was extensively used for the determination of MOR spiked in different real samples (serum and urine samples) with acceptable recoveries and satisfactory results.

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Section: Results and Discussionmentioning

confidence: 80%

Section: ■ Introductionmentioning

confidence: 99%

Dual Naked-Eye and Optical Chemosensor for Morphine Detection in Biological Real Samples Based on Cr(III) Metal–Organic Framework Nanoparticles

Alhaddad

Sheta

2020

ACS Omega

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“…29 CoAl 2 O 4 nanoparticles embedded in MIL-101(Cr) have proved to be efficient catalysts for oxidative catalysis. 30 Recently MIL-101(Cr) and its phospho-tungstic acid (PTA) composite material have been studied as heterogeneous acid catalysts in the acetalization of aldehydes with alcohols. 31 Functionalized MIL-101(Cr) has been investigated for heterogeneous catalysis in the condensation reaction of aldehydes with alcohols.…”

Section: Introductionmentioning

confidence: 99%

High-yield, fluoride-free and large-scale synthesis of MIL-101(Cr)

et al. 2015

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MIL-101(Cr), one of the most important prototypical MOFs, is well investigated and widely used in many scientific fields. With regard to MOF synthesis in general, the addition of a modifier is commonly used to improve the properties of the products. The effect of inorganic (mineral) and organic acid modifiers was thoroughly investigated in the synthesis of MIL-101(Cr) and HNO3 could increase the yield to over 80% of a product with average SBET > 3200 m(2) g(-1) in repeated experiments (from an average of 50% in most published syntheses) in small-scale laboratory synthesis. The large-scale synthesis could use the finding of HNO3 addition and produce MIL-101(Cr) in >100 g quantities with yields near 70% and BET-surface areas near 4000 m(2) g(-1). The addition of acetic acid (CH3COOH) together with seeding could decrease the reaction temperature, the lowest being 160 °C (from typically 220 °C in published procedures), with still relatively good yield and BET surface area of the product. The use of other strong inorganic or weak carboxylic acids as modulators typically caused a decrease in yield and porosity.

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“…The crystalline peaks were consistent with those in the previously reported pure MIL-101(Cr) data, thereby demonstrating the successful synthesis of highly crystalline MIL-101(Cr)-Br. The XRD pattern of MIL-101(Cr)-Br contained noticeable crystalline peaks at 2θ = 5.1, 8.4, and 9.0°, which corresponded to crystalline-plane diffraction of the (531), (882), and (911) planes. , …”

Section: Resultsmentioning

confidence: 97%

Ionic Cross-Linked MOF-Polymer Mixed-Matrix Membranes for Suppressing Interfacial Defects and Plasticization Behavior

Jo,

Kim,

et al. 2024

ACS Appl. Mater. Interfaces

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To address the plasticization phenomenon and MOF-polymer interfacial defects, we report the synthesis of ionic cross-linked MOF MMMs from a dual brominated polymer and MOF components by using N,N′-dimethylpiperazine as the crosslinker. We synthesized brominated MIL-101(Cr) nanoparticles by using mixed linkers and prepared brominated polyimide (6FDA-DAM-Br) to form ionic cross-linked MMMs. The gas permeation properties of the polyimide, ionic cross-linked MOF-polymer MMMs, and non-cross-linked MOF-polymer MMMs with various MOF weight loadings were investigated systematically to effectively understand the effects of MOF weight loading and ionic crosslinking. The ionic cross-linked 40 wt % MOF-polymer MMM exhibited significantly enhanced gas permeability with an H 2 permeability of 1640 Barrer and CO 2 permeability of 1981 Barrer and slightly decreased H 2 /CH 4 , H 2 /N 2 , CO 2 /CH 4 and CO 2 / N 2 selectivities of 16.9, 15.4, 20.5, and 18.6, respectively. The H 2 and CO 2 permeabilities are approximately 2−3 fold higher than those of the pure polyimide (6FDA-DAM) membrane. Moreover, the ionic cross-linked 40 wt % MOF-polymer MMM exhibited significantly increased resistance to plasticization. This is because the brominated MOF incorporation boosted molecular transport and polymer chain rigidity, and ionic cross-linking further reduced the number of interfacial defects and polymer chain mobility.

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Cobalt aluminate nanoparticles supported on MIL-101 structure: catalytic performance investigation

Abstract: Novel heterogeneous catalysts composed by CoAl2O4 nanoparticles supported on MIL-101(Cr) framework exhibiting remarkable catalytic performance for thioanisole oxidation under sustainable conditions.

Cited by 11 publications

References 52 publications

Dual Naked-Eye and Optical Chemosensor for Morphine Detection in Biological Real Samples Based on Cr(III) Metal–Organic Framework Nanoparticles

Dual Naked-Eye and Optical Chemosensor for Morphine Detection in Biological Real Samples Based on Cr(III) Metal–Organic Framework Nanoparticles

High-yield, fluoride-free and large-scale synthesis of MIL-101(Cr)

Ionic Cross-Linked MOF-Polymer Mixed-Matrix Membranes for Suppressing Interfacial Defects and Plasticization Behavior

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