Method for preparing two-dimensional layered transition metal nanosheet gel

Abstract

The invention provides a method for preparing a two-dimensional layered transition metal nanosheet gel. The method comprises the following steps: providing two-dimensional layered transition metal nanosheets with specific functional groups as a solute, and dissolving the two-dimensional layered transition metal nanosheets in a solvent to form a nano dispersion; and providing a cross-linking agentsolution containing a metal ion crosslinking agent containing positive divalent or positive trivalent metal ions, mixing the cross-linking agent solution with the nano dispersion, so as to form the two-dimensional layered transition metal nanosheet gel after mixing.

Description

Technical field [0001] The invention relates to the field of chemical engineering, in particular to a method for preparing a two-dimensional layered transition metal nanosheet gel. Background technique [0002] Two-dimensional layered transition metal nanosheets are a kind of layered two-dimensional nanosheets with excellent electrical conductivity, catalytic activity and adsorption. The gelation of the two-dimensional nanosheets effectively improves the utilization rate of the nanosheets and gives them The advantages of hydrogels can expand the application prospects of two-dimensional layered transition metal nanosheets in the fields of energy storage, catalysis, high-strength materials, electronics, chemistry, and biological detection. [0003] However, compared to other zero-dimensional or one-dimensional materials, one of the most significant problems of two-dimensional materials is that they tend to "face-to-face" stacking. That is, the macroscopic appearance is gel-like, and...

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Problems solved by technology

Two-dimensional layered transition metal nanosheet hydrogels are usually prepared by self-assembly method, solution mixing method, in-situ polymerization method or chemical reduction method. Long time and high cost are not conducive to retaining the excellent physical and chemical properties of two-dimensional layered transition metal nanosheets

[0004] The highly isotropic hydrogel skeleton network has strong conductivity in all directions, and its structure is stable, which facilitates the transport of substances between networks. However, its preparation is difficult, and it is difficult to ensure the conductivity of hydrogels by traditional methods. While building a stable three-dimensional network, to achieve its isotropy

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