The synthesis of mixed-component metal-organic frameworks (MOFs) –including multivariate MOFs (MTV-MOFs), multicomponent MOFs, mixed-metals and mixed-ligands metals MOFs– is becoming a very active research field. This mainly based on the unique possibilities these materials offer to incorporate multiple functionalities in how this heterogenity complexity translated unexpected properties, which are not just sum each component. review critically encompasses progress made field, covering...

Three environmentally friendly MOF-based HEDMs with high-nitrogen ligands present superior detonation properties, thermostability and insensitivity.

A novel two-dimensional (2D) coordination polymer, [Co(ppad)2]n (1), resulted from the assembly of Co(II) ions based on a versatile ligand termed N(3)-(3-pyridoyl)-3-pyridinecarboxamidrazone. Alternating/direct-current magnetic studies compound 1 indicate that spatially separated high-spin act as single-ion magnets (SIMs). The present work represents first case 2D Co(II)-based SIM composed monocomponent organic spacer.

Two energetic compounds, [Pb(Htztr)2(H2O)]n (1) and [Pb(H2tztr)(O)]n (2), were synthesized then structurally characterized (N% = 39.4% for 1, N% 27.2% 2), where Htztr represents 3-(tetrazol-5-yl)triazole. Structural analysis revealed that both compounds have reticular two-dimensional structures. Remarkably, thermogravimetric measurements demonstrated the possess excellent thermostabilities with high decomposition temperatures up to 340 °C 318 (2). The kinetic parameters of exothermic...

Here, a method for presenting crystals of soluble and membrane proteins growing in the lipid cubic or sponge phase situ diffraction data collection at cryogenic temperatures is introduced. The dispenses with need technically demanding inefficient crystal-harvesting step that an integral part meso crystals. Crystals are dispersed bolus mesophase sandwiched between thin plastic windows. contains tens to hundreds crystals, visible in-line microscope macromolecular crystallography synchrotron...

It is an enormous challenge to construct high-energy-density materials meeting simultaneously requirements of high energy and excellent stability. In this work, the reaction a Ag(I) ion with nitrogen-rich ligand, 1 H-tetrazole-5-acetic acid (H2tza), leads novel Ag7-cluster metal-organic framework, [Ag7(tza)3(Htza)2(H2tza)(H2O)] (1), remarkable high-energy content, stability, insensitivity. Dramatically, heating-dehydrated process produces new stable energetic material,...

Microplastics (MPs) pollution has drawn increasing concern due to its widespread occurrence and potential risks in the environment. The reliable methods instruments for fast analysis of microplastics less than 5 mm are urgently needed. In this study, a new method based on custom-made portable pyrolysis-mass spectrometry (Pyr-MS) is developed, which enables rapid identification mass related quantification MPs. MPs decomposed compact pyrolyzer then directly analyzed MS by chemical fingerprints...

Stable Ln(<sc>iii</sc>)-MOFs with a versatile 2-(4-pyridyl)-terephthalic acid ligand can be used as multifunctional sensing platform for Fe³⁺, Cr₂O₇²⁻, and nitrofuran detection.

Developing highly SO2-tolerant catalysts at low and moderate temperatures remains a crucial bottleneck in selective catalytic reduction (SCR) of NOx by NH3. Herein, SCR is boosted via adsorption activation reactants over Ce4+–SO42– pair sites on CeO2 sulfur doping. Interestingly, dopant, characterized as bulk sulfate bidentate coordinating (sub)surface catalysts, utilizes strong electronegativity to induce the neighboring Ce atoms be charge-deficient. This electronic effect simultaneously...

The selective catalytic oxidation of ammonia (NH3-SCO) into N2 and H2O is a recognized effective protocol to eliminate excessive NH3 emission. Nevertheless, it great challenge for NH3-SCO catalysts balance the activity with selectivity. Herein, promotion effects dynamically constructed CuOx-OH interfacial sites without scarification selectivity were unraveled. enrichment coordination unsaturated Cu Cu-OH acid in optimized adsorption activation O2, leading over 9-fold increase rate 40 kJ/mol...

The catalyst deactivation caused by the coexistence of alkali and heavy metals remains an obstacle for selective catalytic reduction NOx with NH3. Moreover, copoisoning mechanism is still unclear. Herein, K Cd was revealed from adsorption variation reaction intermediates at a molecular level through time-resolved in situ spectroscopy combined theoretical calculations. metal mainly decreased NH3 on Lewis acid sites altered more depending formation NH4NO3 intermediate, which highly related to...

SO2-resistant selective catalytic reduction (SCR) of NOx remains a grand challenge for eliminating generated from stationary combustion processes. Herein, has been boosted by modulating electronic interaction short-range Fe-O coordination over Fe2O3/TiO2 catalysts. We report remarkable SO2-tolerant catalyst using sulfur-doped TiO2 as the support. Via an array spectroscopic and microscopic characterizations DFT theoretical calculations, active form dopant is demonstrated SO42- residing at...

Synergistic control of nitrogen oxides (NOx) and nitrogen-containing volatile organic compounds (NVOCs) from industrial furnaces is necessary. Generally, the elimination n-butylamine (n-B), a typical pollutant NVOCs, requires catalyst with sufficient redox ability. This process induces production byproducts (NO, NO2, N2O), leading to lower N2 selectivity NH3 selective catalytic reduction NOx (NH3-SCR). Here, synergistic removal n-B via spatially separated cooperative sites was originally...

A reticular 3D heterometallic metal-organic framework (MOF), [Cu4Na(Mtta)5(CH3CN)]n () (N% = 40.08%), has been synthesized, using a 5-methyl tetrazole (Mtta) ligand formed from acetonitrile and azide, through in situ synthesis structurally characterized by X-ray single crystal diffraction. The fluorescence spectra demonstrate that undergoes an interesting structural transformation aqueous solution, yielding the compound [Cu4Na(Mtta)5H2O]n as confirmed (1)H NMR, IR PXRD. Thermoanalysis showed...

Abstract Reaction of Co(II) with the nitrogen‐rich ligand N , ‐bis(1 H ‐tetrazole‐5‐yl)‐amine (H 2 bta) leads to a mixed‐valence, 3D, porous, metal–organic framework (MOF)‐based, energetic material nitrogen content 51.78%, [Co 9 (bta) 10 (Hbta) O) ] n ⋅(22 ( 1 ). Compound was thermohydrated produce new, stable, 59.85% and heat denotation 4.537 kcal cm −3 Sensitivity tests show that is more sensitivity external stimuli than reflecting guest‐dependent energy MOF‐based, materials....

Two β-diketone mononuclear Dy(III) compounds, formulated as Dy(BTFA)3(H2O)2 (1) and Dy(BTFA)3(bpy) (2) (BTFA = 3-benzoyl-1,1,1-trifluoroacetone, bpy 2,2′-bipyridine), were prepared. Compound 1 can be identified to transform 2 in the attendance of coligand, when local geometry symmetry eight-coordinated ion changes from a dodecahedron (D2d) square antiprism (D4d) 2. Fine-tuning structure aroused by auxiliary ligand has dramatical impact on magnetic properties compounds Magnetic investigations...

ZIF-8 film coated meshes with an oil–water separation efficiency of up to 99.99% and a high flux 50 L m⁻² s⁻¹.

Employing two benzoate derivatives with different numbers of non-coordinated fluoro-substituents, 2-fluorobenzoic acid (2-Hfba) and 2,6-difluorobenzoic (2,6-Hdfba), new azido-copper coordination polymers, [Cu(2-fba)(N3)(CH3OH)]n (1) [Cu(2,6-dfba)(N3)(CH3OH)]n (2), have been successfully isolated, then structurally magnetically investigated. Single crystal structure analysis demonstrates that the metal cations in resulting compounds are connected by alternating triple-bridge μ-1,1-azido,...

Releasing the poisoning effect of alkali metals over catalysts is still an intractable issue for selective catalytic reduction (SCR) NOx with ammonia. The presence K in fly ash always dramatically suppressed activity by impairing acidity and redox properties, leading to severe lifetime SCR catalysts. Herein, alkali-resistant TiO2-supported Fe2(SO4)3 was originally demonstrated via naturally coupling active sites. Notably, expressed admirable conversion resistance within a quite broad...

Hydrothermal reactions of europium(III) salt with 2-(4-carboxyphenyl)imidazo[4,5-f]-1,10-phenanthroline and dicarboxylic acid as coligands—benzene-1,4-dicarboxylic acid, 4,4′-biphenyldicarboxylic 2,5-dibromoterephthalic naphthalene-1,4-dicarboxylic acid—lead to four europium fluorescent materials (1–4). Structural analyses reveal that 1–4 have binuclear 3D metal–organic frameworks different channels, void volumes, conjugated structures tuned by ditopic carboxylates. There are no latticed...