Surface modification method of metal-organic framework adsorbing materials

Abstract

The invention relates to a surface modification method of a metal-organic framework adsorbing materials. Metal-organic framework porous adsorbing materials (MOFs) are subjected to chemical treatment in a plurality of steps, so that the adsorptive property on non-polar organic gas molecules in presence of water molecules can be improved. The preparation method of the materials comprises the following steps: firstly, putting to-be-modified MOFs into a tube furnace, and introducing nitrogen to ensure no residual air inside; introducing a certain amount of pure pyridine (C5H5N) into the tube furnace together with the N2, and reacting at certain temperature; cooling a reaction tube containing the MOFs to below 50 DEG C, and introducing N2 to the tube furnace; and after desorption is ended taking out and encapsulating the modified MOFs for later use. The metal-organic framework porous adsorbing materials are simple in modification process and high in operability; and the problems of adsorptive property degradation and internal structure damage of the non-polar organic gas molecules caused by hydrophilia of metallic clusters in MOFs porous materials can be solved by the MOFs prepared by the method.

Description

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AI Technical Summary

Benefits of technology

This patented technology describes methods that use special chemical compounds called metals or organoids onto which certain atoms are attached at various positions inside an open porous network made from poly(methyl)acrylate). These modifications help these substances stick out easily when removed through heat treatment without losing their effectiveness due to its ability to bind strongly against other gases like oxygen. By treating this modified layer with another chemistry solution containing nitrogen monoxide, it becomes stronger towards acidic environments such as those found near coal mines where sulfur dioxides may form harmful emissions. Overall, this new technique provides technical benefits over current techniques including modifying catalyst surfaces and improving gas separation efficiency while reducing damage caused by volatiles released into air polluting environmental concerns.

Problems solved by technology

This patented technical solution describes how certain types of metals called MOFSs or organoids hold promise for use in various industries like environmental science and technology. They allow different species of atoms within them to bind together without losing their original properties due to interactions involving multiple coordinating elements on each atom's lattice points. By combining these components into larger structures, more stable and durable materials may emerge from those compositions. Additionally, when decomposed after being used, these complex structures lose their effectiveness over time because they cannot easily separate out unwanted substances.

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