Vacancy-Induced Surface Oxygen Doping Synergistically Enhances Electron Migration at Carbon-Nitride Interfaces: Coupling Dft Simulations with Experiments

Published: Jan. 1, 2024

Language: Английский

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Lanthanide-based F-MOFs: Structure, hydrolytic stability, spectral and magnetic properties

Journal of Solid State Chemistry, Journal Year: 2024, Volume and Issue: 339, P. 124949 - 124949

Published: Aug. 8, 2024

A series of five novel lanthanide-based fluorinated metal-organic frameworks (Ln-F-MOFs) have been synthesized under solvothermal conditions by the reaction 3,3′-bis(trifluoromethyl)-[1,1′-biphenyl]-4,4′-dicarboxylic acid (H2L) and lanthanide Ln(III) ions (Ln(III)La, Ce, Pr, Nd Eu). Powder X-ray diffraction (PXRD) analysis revealed that all prepared complexes are isostructural. single-crystal crystallographic study one representative isostructural group, namely {[La2(L)3(DMF)2(H2O)2]}n showed, compound crystallizes in a triclinic system with space group P-1. The lattice parameter values = 8.563(2) Å, b 13.199(3) c 16.008(4) α 104.588(7) °, β 92.904(7) ° γ 92.717(7) two formula units unit cell. overall structure is formed 2D polymeric layers, which arranged into semi-3D supramolecular through hydrogen bonds other intramolecular interactions. hydrophobic properties showed exhibit surface hydrophobicity "rose petal effect" contact angle approximately 107°. However, structures not hydrolytically stable long term starts to delaminate after days water. This manifestation fact do form 3D polymer network, it made up layers connected only weak non-bonding photoluminescence determined characteristic 5d-4f or 4f-4f electron transitions for individual ions. magnetic Nd(III), Pr(III) Eu(III) variants were studied. {[Pr2(L)3(DMF)2(H2O)2]}n characterized presence low-lying quasi-doublet 15.6 cm−1 energy splitting, whereas variant nonmagnetic at low temperatures, but 7F1 state accessible thermal excitation. For Nd(III) complex, X-band EPR measurements performed. Since 1D channels dimensions 4.90 × 7.23 Å2 present within structure, adsorption N2, CO2 H2 gases was also

Language: Английский

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A new 3D Cd(II)-based metal-organic framework as dual-function luminescent sensor to ions and antibiotic: mechanism and theoretical studies

Journal of Molecular Structure, Journal Year: 2024, Volume and Issue: 1322, P. 140691 - 140691

Published: Nov. 8, 2024

Language: Английский

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Surface Reaction Mechanism of ZSM-5(3T)@NH2-MIL-53(Al) Core-Shell Catalyst for Dimethyldichlorosilane Synthesis

Journal of Solid State Chemistry, Journal Year: 2024, Volume and Issue: unknown, P. 125127 - 125127

Published: Dec. 1, 2024

Language: Английский

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