Synthesis Of ZIF Based Core-shell Heterostructure Metal-Organic Frameworks And Their Properties

Metal-organic skeleton materials?metal organic framework,MOFs?cluster is made up of metal ions,metal inorganic or organic and biological molecules,organic molecules or polymers through hydrogen bonding,electrostatic interaction,metal coordination formed by self-assembly,with functions of network structure and characteristics of porous materials.In this paper,we prepared metal-organic skeleton materials,and study the adsorption of the composite materials,such as antibacterial performance,We using X-ray diffraction analysis?XRD?researched metal-organic materials composition and phase;Through the scanning electron?SEM?analyzed of metal-organic skeleton materials characteristics of morphology and size;By transmission electron microscope?TEM?observed of materials of morphology characteristics and selection of electron diffraction structure;Through the comprehensive physical property measurement?PPMS?analyzed of metal-organic skeleton materials of hysteresis loop;Used of specific surface area and pore size and analyzer?BET?,got metal-organic skeleton materials information such as the specific surface area and pore size distribution;Metal-organic skeleton materials was studied by thermogravimetric?TG?analysis materials component and thermal stability.Experiment content is as follows:1.In this paper,Fe₃O₄/Fe@ZnO core-shell heterostructure nanospheres with ferromagnetic behavior and high specific surface area were synthesized by calcining metal-organic framework templates.The maximum adsorption capacities of the adsorbents towards Pb???and MB are 163 and 40 mg/g,respectively.Successful access to high quality Fe₃O₄/Fe@ZnO core-shell heterostructure will make it possible for potential applications in wave absorption and other fields.2.In this paper,we have developed an easy and controllable method to prepare well-defined core-shell Ag@ZIF-8 core-shell heterostructure,which have unique morphology,large specific surface area,and good thermal stability.The thickness of the ZIF-8 shell can be conveniently adjusted by changing the quantity of Ag nanowires.Additionally,the antibacterial activity of Ag@ZIF-8 is further tested against Bacillus subtilis and Escherichia coli BL21.The results demonstrate that Ag@ZIF-8 core-shell heterostructure nanowires are highly effective against both Gram-positive and Gram-negative bacteria.3.In this paper,we have developed a hydrothermal method to prepare large-scale Fe₃S₄ nanosheets,which have unique morphology,large specific surface area,and ferromagnetic behavior.The growth process of Fe₃S₄ nanosheets has been investigated based on the results of time-dependent experiments.When they were employed as anode materials for lithium-ion batteries,the Fe₃S₄ nanosheets can deliver stably reversible capacity of 548 mAh/g after 120 cycles at a current density of 0.2 A/g and superior rate performance.