ZIF-4, a metal-organic framework (MOF) with a zeolitic structure, undergoes a crystal-amorphous transition on heating to 300 degrees C. The amorphous form, which we term a-ZIF, is recoverable to ambient conditions or may be converted to a dense crystalline phase of the same composition by heating to 400 degrees C. Neutron and x-ray total scattering data collected during the amorphization proces...

Zn1?xCdxS catalysts with Zeolitic Imidazolate Framework-8 (ZIF-8) as the precursor were successfully prepared by ion exchange method, and ability electrochemical properties of a series ZIF-8, ZnS in photocatalytic degradation 2-CP TC investigated. Doping Cd ions was able to modulate band gap width improve utilization visible light photocatalyst. The nanocage hollow structure have better respons...

Herein, we present the first examples of solvent-assisted linker exchange (SALE) in zeolitic imidazolate frameworks (ZIFs). By exposing the ZIF CdIF-4 to excess solutions of 2-nitroimidazole and 2methylimidazole under solvothermal conditions, we were able to obtain a previously reported ZIF CdIF-9 in high yield, as well as synthesize a new ZIF, Solvent-Assisted Linker-Exchanged Material-1 (SALE...

We have recently identified by cDNA cloning a set of genes that are rapidly activated in mouse 3T3 cells by serum or purified growth factors. Here we report that the cDNA (clone 268) derived from one of these immediate early genes (zif/268) encodes a protein with three tandem "zinc finger" sequences typical of a class of eukaryotic transcription factors. The mRNA of zif/268 is present in many o...

Toluene was discovered as the structure template for the synthesis of large-cage RHO-type zeolitic imidazolate frameworks (ZIF-11 and ZIF-12) in an alcohol-based solution where benzimidazole-toluene interactions play a decisive structure-directing role; otherwise it leads to small-cage SOD-type ZIF-7 and ZIF-9 without toluene. The specific π-π interactions make toluene molecules adopt a specifi...

In this study, ZIF-67 was synthesized through solvothermal method to remove Cr(VI) ions from aqueous solution. To improve the structural properties of ZIF-67 and its adsorption capacity, optimization of the synthesis conditions was carried out based on maximum Cr(VI) uptake. From experiments, the optimum condition was revealed as solvent: metal ion molar ratio of 4.6:1, ligand: metal ion molar ...

Bu çalışmada, metilal/metanol karışımlarının ayrılması için pervaporasyon işlemi kullanılmıştır. Metanole afinitesinden dolayı membran hazırlamak polieterimid (PEI) polimeri seçilmiştir. ZIF-8, katkı maddesi olarak ZIF-8 katkılı PEI membranı sentezlenmiş ve karakterize edilmiştir. Membranların kimyasal bağ yapısı, termal dayanımı morfolojisi sıraısyla Fourier dönüşümü kızılötesi spektroskopisi ...

A novel biobased porous aerogel was synthesized using physical mixing, freeze-drying, and in-situ growth methods. Zeolitic imidazolate frameworks-8 (ZIF-8) were grafted onto the surface of CS/CNF solid composite to form a ZIF-8@CS/CNF aerogel. The structural characteristics adsorption potential investigated. It found that specific area 206 m2/g, water stability CNF enhanced by incorporating CS....

We report the study of the resistance of archetypal MOFs (MILs, HKUST-1, UiO-66, and ZIF-8) under gamma irradiation. The different porous solids were irradiated with doses up to 1.75 MGy. All the MOFs constructed with transition metals (Cu2+, Zn2+, Zr4+) exhibit an evident destruction of the framework, whereas the compounds constructed with aluminium remain intact.