نتایج جستجو برای: zif 67
تعداد نتایج: 71974 فیلتر نتایج به سال:
Graphitic carbon nitride (g-C3N4), as the one of most promising photocatalysts, usually relies on noble metal co-catalysts in photocatalytic water splitting H2 evolution process, which greatly increases use cost. Here, a zeolite imidazole framework (ZIF-67) derived [email protected]/g-C3N4 composite was constructed through facile thermal condensation ZIF-67 and melamine. The obtained composites...
In this work, an efficient cage-core peroxymonosulfate (PMS) catalyst was synthesized by applying electrospinning–calcination process to the cobalt–zeolitic imidazole framework (ZIF-67) crystals for catalytic degradation of dimethyl phthalate (DMP). The morphology and surface properties materials (ZIF-67, Z600 ZP400/600/800) were well characterized. ZP600 showed great performance DMP in initial...
A zeolitic imidazolate framework material of SOD topology possessing primarily unsubstituted imidazolate (im) linkers has been synthesized via solvent-assisted linker exchange (SALE) of ZIF-8. The structure of the new material, SALEM-2, has been confirmed through (1)H NMR and powder and single-crystal X-ray diffraction. SALEM-2 is the first example of a porous Zn(im)(2) ZIF possessing a truly z...
This work reports on zeolitic imidazolate framework (ZIF)-coupled microscale resonators for highly sensitive and selective gas detection. The combination of microscale resonators and nanoscale materials simultaneously permits the benefit of larger capture area for adsorption from the resonator and enhanced surface adsorption capacity from the nanoscale ZIF structure. Dielectrophoresis (DEP) was...
Microporous metal-organic frameworks (MOFs) that display permanent porosity show great promise for a myriad of purposes. The potential applications of MOFs can be developed further and extended by encapsulating various functional species (for example, nanoparticles) within the frameworks. However, despite increasing numbers of reports of nanoparticle/MOF composites, simultaneously to control th...
In a ZIF: A hybrid composite based on Co/Co2P nanoparticles encapsulated within N,P,S co-doped porous carbon is prepared by controlled pyrolysis of cobalt-containing zeolitic imidazolate framework (ZIF-67) and poly(cyclotriphosphazene-co-4,4’-sulfonyldiphenol) (PZS). Electrochemical measurements show enhanced oxygen reduction reaction activity long-term durability compared with commercial Pt/C,...
A thin, dense, compact and hydrogen selective ZIF-8 membrane was synthesized on a polymer/metal oxide mixed-matrix support by a secondary seeding method. The new concept of incorporating ZnO particles into the support and PDMS coating of the ZIF-8 layer is introduced to improve the preparation of ZIF-polymer composite membranes.
We report the rapid amorphization of the prototypical substituted zeolitic imidazolate framework, ZIF-8, by ball-milling. The resultant amorphous ZIF-8 (a(m)ZIF-8) possesses a continuous random network (CRN) topology with a higher density and a lower porosity than its crystalline counterpart. A decrease in thermal stability upon amorphization is also evident.
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