The thermal-expansion properties of substances are very important in materials design; for example, cracks form when joined materials expand or contract by different amounts upon heating. The most famous example of a substance that contracts when heated is ice: it transforms into water, which has a higher density than ice. Negative thermal expansion (NTE) in solids is relatively rare, although ...

Regulating the coordination environment via heteroatoms to break symmetrical electronic structure of M-N4 active sites provides a promising route engineer metal-nitrogen-carbon catalysts for electrochemical CO2 reduction reaction. However, it remains challenging realize site-specific introduction at atomic level due their energetically unstable nature. Here, this paper reports facile using an o...

The selective electrochemical reduction of CO2 to CO is a promising solution for the design carbon-neutral, sustainable processes. Achieving highly single product still challenging because energetically favorable competing hydrogen evolution reaction. We report fabrication N-doped sponge-like porous graphitic carbon structures embedded with Fe nanoparticles ([email protected]) via pre-modificat...

Metal organic frameworks (MOFs) are promising materials for the storage of hydrogen fuel due to their high surface areas, tunable properties, and reversible gas adsorption. Although several MOFs are known to exhibit high hydrogen densities on a gravimetric basis, realizing high volumetric capacities – a critical attribute for maximizing the driving range of fuel cell vehicles – remains a challe...

The purpose of this study was the surface modification of nano MOF-5 (NMOF-5) or IRMOF-1 (Zn4O(C8H4O4)3) in order to prevent its rapid degradation in the phosphate-buffered saline (PBS), along with the simultaneous increase in its biocompatibility. The NMOF-5 sample was synthesized under the ultrasound irradiation and then it was loaded wit...

Abstract Scientists are currently working to develop more effective and less harmful methods of delivering drugs tissue. One method is use a special type carrier help the drug get right place in body. In this study, an organometallic framework nanocarrier with formula IRMOF-3 [Zn 4 O(NH 2 -BDC) 3 ] was successfully prepared, containing magnetic nanoparticles manganese ferrite (MnFe O ) doxorubi...

Functionalization of metal–organic frameworks (MOFs) is critical in exploring their structural and chemical diversity for numerous potential applications. Herein, we report multiple approaches the tandem postsynthetic modification (PSM) various MOFs derived from Zr(IV), Al(III), Zn(II). Our current work based on our efforts to develop a wide range MOF platforms with dynamic functional nature th...

The recently discovered UiO-66/67/68 class of isostructural metallorganic frameworks (MOFs) [J. H. Cavka et al. J. Am. Chem. Soc., 2008, 130, 13850] has attracted great interest because of its remarkable stability at high temperatures, high pressures and in the presence of different solvents, acids and bases [L. Valenzano et al. Chem. Mater., 2011, 23, 1700]. UiO-66 is obtained by connecting Zr...