Abstract Substrate‐supported metal–organic frameworks (MOFs) films are desired to realize their potential in practical applications. Herein, a novel substrate‐seeding secondary‐growth strategy is developed prepare composites of uniform MOFs on aerogel walls. Briefly, the organic ligand “pre‐seeded” onto walls, and then small amount metal‐ion solution sprayed prepared aerogel. The diffuses along walls form continuous thin layer, which confines nucleation reaction, promoting formation whole...

Bimetallic organic frameworks (Bi-MOFs) have been recognized as one of the most ideal precursors to construct metal oxide semiconductor (MOS) composites, owing their high surface area, various chemical structures, and easy removal sacrificial MOF scaffolds through calcination. Herein, we synthesized Zn/Ni Bi-MOF for first time via a facile ion exchange postsynthetic strategy, formed three-dimensional framework consisting infinite one-dimensional chains that is unattainable direct...

Previous studies have linked nitrosamine formation during ozonation to a nitrosation process in which is catalyzed by formaldehyde, normal byproduct of ozonation. This mechanism cannot explain the increase N-nitrosodimethylamine (NDMA) with an pH. study reinvestigates pathway N-nitrosamine Our observations demonstrated critical importance some reactive inorganic nitrogenous intermediates, such as hydroxylamine and dinitrogen tetroxide (N2O4). We report two alternative pathways that possibly...

An ultra-high quantum yield Tb-MOF with phenolic hydroxyl as the recognition group for a highly selective and sensitive detection of Fe 3+ .

Hierarchically porous metal-organic frameworks (HP-MOFs) are a class of promising functional material with micropores, mesopores, and/or macropores, which can address the issue slow mass transfer and less exposed active sites for primitive microporous MOFs. Despite many attempts that have been achieved through variety techniques to date, there is still myriad spaces urgently need be exploited. In this work, we report novel synthesis HP-MOFs via chemical steam etching. The preparation process...

A robust metal-organic frameworks (MOFs)-aerogel composite was prepared by a covalent post-assembly method, which shows outstanding catalytic activity and stability in CO₂ cycloaddition excellent adsorption capacity for dyes.

This study explored the complete replacement of sodium nitrite with a combination Monascus pigments (MPs)-calcium carbonate colorant lake (MPs-CaCO3 lake) and nisin in smoked sausage production. The effects on color stability, total aerobic mesophilic bacteria count (TAMB), physicochemical properties sausages were assessed. results indicated that combining 0.26 g/kg 0.4 effectively replaced coloring preservative functions nitrite. Physicochemical analyses revealed addition pigment...

In this study, the Mo/C276 coating was deposited on Q690E steel by high velocity oxy-fuel spraying (HVOF), and treated with an organosilicon sealer. Further, corrosion behaviors of in simulated deep-sea cold spring environment hydrogen sulfide pressure were studied. The results show that when oxygen flow rate is 220 NL/min, has lowest porosity 1.71% excellent mechanical properties. Combined micromorphology elemental analysis coating, it assumed Fe element generated substrate migrates to...

Constructing metal nanoparticle (MNP) composites from metal–organic framework (MOF) precursors has attracted extensive attention as the MOF provide an excellent porous matrix for generation of MNP composites, which enables direct fabrication well-dispersed composites. In this work, a novel strategy is proposed to fabricate by slow chemical reduction (SCR) at room temperature. The process skillfully slowed via using ethanol solvent, and formation then realized SCR process. Briefly, BH4–...

Bimetallic oxides are a class of promising advanced functional metal nanomaterials, especially in terms the sophisticated hierarchical structure bimetallic oxide, which not only is favor enhancing their intrinsic physiochemical properties because more accessible actives sites but also capable integrating synergistic effect between two metals. Herein, we report novel strategy to controllably construct CuO/ZnO nanomaterials with through pseudomorphic transformation and subsequent calcination...

This study investigated the impact of bromide on formation N-nitrosamines during chlorination and chloramination, tried to identify reactive intermediates responsible for variations in yield N-nitrosamines. As an intermediate reaction between HOCl, bromine chloride (BrCl) may improve N-nitrosodimethylamine (NDMA) formation. But increasing amount added would result BrCl being converted into HOBr, which is a weaker oxidant than HOCl. less nitrite formed, leading decreased NDMA via nitrosation...

A dual-emissive optical material as a ratiometric fluorescent probe has been demonstrated to be remarkably superior in precise and quantitative analyses. Herein, novel Eu-BDC-OH was designed successfully synthesized using Eu3+ 2-hydroxyterephthalic acid (H2BDC-OH) at room temperature. three-dimensional interpenetrating network structure with large number of exposed hydroxyl functional groups, providing abundant active sites for molecular recognition. In particular, the as-obtained serves...

An interesting reversible shape and structure transformation between two types of two-dimensional (2D) metal-organic frameworks (MOFs) has been successfully achieved by the spray method. The ability to precisely control morphology 2D MOFs is also developed altering amount MOF precursors reversing order. Meanwhile, mechanism studied conversion induced change acidity in reaction system. In addition, prepared non-interpenetrate CuBDC twists exhibit more remarkable catalytic performance C-S...

Incorporating secondary metal nodes with functionality into organic ligand to form a bimetallic metal-organic frameworks (MOFs) would facilitate an enhancement in properties and broaden applied areas of MOFs. Hierarchical tubular Cu/Zn-MOF-74 assembled by nanosheet arrays is synthesized at ambient temperature pressure phase transformation Cu-based precursor MOF immersion solution Zn2+. The content Zn can be controlled adjusting the concentration Zn2+ solution, it reach maximum 36.4%....

A stable Cu( i )-carboxylate MOF is fabricated by ascorbic acid reduction, which breaks HSAB theory and achieves in situ phase transitions. The resultant Cu 2 H DOBDC acting as a CuAAC catalyst exhibited superior catalytic performance.

To clarify the strengthening mechanisms of medium‐chromium stainless steels (SSs) with carbides, ferrite, and martensite, 17%Cr SSs varying martensite contents have been prepared, influence on microstructure, mechanical properties, fracture has investigated. According to THERMOCALC calculations, SS undergo a reversible phase transition between austenite ferrite + M 23 C 6 through diffusion carbon in temperature range 850–1220 °C. As content increases, decreases, grain size initially...

Abstract Metal‐organic framework (MOF)‐derived materials have been widely applied to diversified fields until now due their flexible processibility. Different kinds of suitable can be synthesized by varying MOF templates/precursors and synthesis methods. An appropriate method skillfully fabricate the with excellent performance while meeting environmentally friendly concept. In this work, a green grinding was introduced synthesize MOF‐derived FeNiCo trimetallic without solvent‐assistance, in...

A novel orientation–modification strategy is proposed for the fabrication of MOFs/poly-pyrrole composites with dilated porosity, which realized according to missing linker defects induced by reduction on specific lattice plane MOFs.

Abstract Metal-organic frameworks (MOFs) with structural diversity and functionality have attracted incredible research interest, while their practical applications are hampered due to intrinsic fragility powder state. Herein, a MOF/aerogel composite has been successfully fabricated through mild green one-pot method anchor ZIF-L nanosheets on the carboxymethylcellulose (CMC) aerogel overcome these difficulties. The CMC not only acts as template improve processability applicability of ZIF-L,...

Abstract Substrate‐supported metal–organic frameworks (MOFs) films are desired to realize their potential in practical applications. Herein, a novel substrate‐seeding secondary‐growth strategy is developed prepare composites of uniform MOFs on aerogel walls. Briefly, the organic ligand “pre‐seeded” onto walls, and then small amount metal‐ion solution sprayed prepared aerogel. The diffuses along walls form continuous thin layer, which confines nucleation reaction, promoting formation whole...