Numerical and experimental investigation of desiccant cooling system using metal organic framework materials

Aluminium fumarate and CPO-27(Ni) MOFs: Characterization and thermodynamic analysis for adsorption heat pump applications

Preparation of metal organic framework materials with defects via a mixed-metallic centers strategy for enhanced removal of organic dye

NaN3, as a kind of rich-nitrogen energetic material, engaged in the synthesis of hierarchical transition metal (Co/Ni) organic framework materials (MOFs) through a facile hydrothermal reaction, during which aqueous N3 − function groups being as an unique ligand in preparation of novel coordination polymer with the existence of Co2+ (or Ni2+) salts and dicyandiamide. The obtained compounds (Co-eMOF, Ni-eMOF, NiCo-eMOF) were characterized by structure and composition analysis, specific surface area, thermogravimetric analysis (TGA) and crystal X-ray diffraction. The prepared products regardless of the metal cautions (Co, Ni, or coexist Co and Ni), perform a well three-dimensions (3D) nanostructures with spherical shaped monoliths, known as organic framework materials. The as-prepared products with developed porosity demonstrate a high surface area in range of 80∼130 m2/g. XRD patterns for these three examples show similar lattice crystalline, which to an extent matches well with the simulated MOF-74 materials, suggesting profound formation of oriented crystal growth. XPS reveals the compounds all equipped with high nitrogen content (54∼60 at%), which is largely hinging on the contribution from N3 − function groups, suggesting the superiority of NaN3 serving as the rich nitrogen precursor. Accounting for extensive application, we will apply this as-prepared (Co/Ni) MOF materials as one kind of nitrogen-rich precursor and conduct them for further calcination treatment for preparation of graphite-based transition metal carbides (TMC), and it is highly anticipated to achieve efficient activity towards electrocatalysis in our follow-up actions.

As a highly promising candidate for hydrogen storage, crucial to vehicles powered by fuel cells, metal–organic frameworks (MOFs) have attracted the attention of chemists in recent decades. H2 uptak...

CPO-27(Ni), aluminium fumarate and MIL-101(Cr) MOF materials for adsorption water desalination

Novel MOF-303/G coated wire-finned heat exchanger for dehumidification applications–Experimental investigation

Experimental testing of wire finned heat exchanger coated with aluminium fumarate MOF material for adsorption desalination application

Facile synthesis and characterization of novel dicarboxylate-Cu based MOFs materials

Porous Metal-Organic Frameworks: Promising Materials for Methane Storage

Metal-organic framework (MOF) materials have revolutionized the applications of nanoporous materials. They can be potentially used in separation, storage, and catalysis, among other applications. Since their discovery in 1999 (Li et al. Nature 402:276-279, 1999; Chui Science 283:1148-1150, 1999), more than 20,000 new structures have been synthesized thanks in part to their high compositional versatility. However, only some of them are really stable in water (both in liquid and vapor phase), which limits their employment in other applications. Furthermore, biocatalysis field has been demanding a "universal support" able to encapsulate/immobilize any type of enzyme in a straightforward methodology and, simultaneously, capable of keeping the enzymatic catalytic activity. This requisite set has been a big challenge considering the drastic synthesis conditions required for most of the MOF materials. Thus, a compromise between the development of a well-formed material support and an acceptable enzymatic activity had to be achieved in order to obtain active biocatalysts, ideally prepared in just one step and under sustainable conditions. In this chapter, we describe the protocols about how to synthesize MOF materials in water, under mild conditions and almost instantaneously in the presence of enzymes. The most successful support of these sustainable MOFs was the semicrystalline Fe-BTC MOF material (like the commercial Basolite F300) allowing the development of efficient active biocatalysts (97% with respect to the free enzyme in the case of CALB lipase). Particularly, this enzyme support improves the benefits given by some other MOF-based supports also described in this chapter, like NH2-MIL-53(Al). Furthermore, we present the post-synthesis immobilization approach, which consists firstly in the synthesis or preparation of the respective MOF material (Fe-BTC or NH2-MIL-53(Al)), followed by an enzyme immobilization protocol. As reported in bibliography, MOFs as enzyme supports combine together more active biocatalysts with lower enzyme leaching when compared to other conventional materials. Moreover, MOFs prepared in non-aqueous media (for instance, N,N-dimethylformamide) can also trap enzymes in an otherwise adverse media. These facts bring these biocatalysts closer to industrial employment in even more demanding applications.

Fabrication of CoFe-MOF materials by different methods and adsorption properties for Congo red

Synthesis of metal-organic framework-luminescent guest (MOF@LG) composites and their applications in environmental health sensing: A mini review

Recent advances in small-angle scattering techniques for MOF colloidal materials

Window effect on CO2/N2 selectivity in metal organic framework materials

The hydrogen–methane compound (H2)4CH4—or for short H4M—is one of the most promising hydrogen-storage materials. This van der Waals compound is extremely rich in molecular hydrogen: 33.3 mass%, not including the hydrogen bound in CH4; including it, we reach even 50.2 mass%. Unfortunately, H4M is not stable under ambient pressure and temperature, requiring either low temperature or high pressure. In this paper, we investigate the properties and structure of the molecular and crystalline forms of H4M, using ab initio methods based on van der Waals DFT (vdW-DF). We further investigate the possibility of creating the pressures required to stabilize H4M through external agents such as metal organic framework (MOF) materials and carbon nanotubes, with very encouraging results. In particular, we find that certain MOFs can create considerable pressure for H4M in their cavities, but not enough to stabilize it at room temperature, and moderate cooling is still necessary. On the other hand, we find that all the investigated carbon nanotubes can create the high pressures required for H4M to be stable at room temperature, with direct implications for new and exciting hydrogen-storage applications.