Water-soluble metal ion loaded hybrid material and method for preparing same

Abstract

The invention relates to a water-soluble metal ion loaded hybrid material and a method for preparing the same. The water-soluble metal ion loaded hybrid material comprises carrier molecules A, stabilizer molecules B and metal ions. The method includes steps of stirring and mixing aqueous solution of the carrier molecules A and aqueous solution of the stabilizer molecules B with each other to obtain mixed solution; regulating a pH (potential of hydrogen) value of the mixed solution; adding metal ion salt solution into the mixed solution drop by drop; continuously stirring the mixed solution and the metal ion salt solution; adding precipitants into the mixed solution and the metal ion salt solution; filtering the mixed solution and the metal ion salt solution to obtain precipitates; drying the precipitates by the aid of a vacuum drying oven to obtain the dry-state metal ion loaded hybrid material. The water-soluble metal ion loaded hybrid material and the method have the advantages that the metal ions in the metal ion loaded hybrid material are stably and effectively connected onto molecular chains of the carrier molecules in ionic bond and coordination bond forms, so that the water-soluble metal ion loaded hybrid material is good in water solubility, and the metal ion loading capacity of the water-soluble metal ion loaded hybrid material can be adjusted; the method for preparing the hybrid material is free of pollution and easy to implement, and products rarely contain impurities; the water-soluble metal ion loaded hybrid material prepared by the aid of the method can be widely applied to the aspects such as antibacterial finishing liquid, self-assembly stock solution and intermediates prepared from metal nano-materials.

Description

technical field [0001] The invention relates to a water-soluble hybrid material loaded with metal ions and a preparation method thereof, in particular to a stable water-soluble hybrid material loaded with metal ions and a preparation method thereof. Background technique [0002] Hybrid materials loaded with metal ions refer to the bonding of metal ions to carrier molecules through chemical bonds or physical bonds. This type of hybrid materials is widely used in metal ion adsorption materials, catalytic materials, self-assembly units, antibacterial materials and flame retardant materials etc. [0003] The hydroxyl group, amino group and carboxyl group in the carrier molecule have a good chelating effect on metal ions, and can effectively adsorb or trap metal ions in the solution. Based on this principle, researchers have prepared many hybrid materials loaded with metal ions. As proposed in CN102430391A, metal salts are added in the chitosan acetic acid solution to make the ...

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Problems solved by technology

As in CN101450385A and CN103785854A, nano-silver and nano-gold particles were prepared by using sodium carboxymethyl cellulose and sodium alginate as stabilizers and reducing agents to reduce precursor silver nitrate and chloroauric acid solutions, proving that the hydroxyl in the polysaccharide is in a certain To a certain extent, it has a certain reducibility to metal ions, and it cannot guarantee that the metal ions in the same system can exist stably

On the other hand, the hybrid materials loaded with metal ions prepared by the current research have poor water solubility, are difficult to disperse stably in the solution, and mostly exist in unstable forms such as precipitation or suspension, while the water-soluble hybrid materials loaded with metal nanoparticles Chemical materials have broad prospects in applications that require a stable solution state, such as antibacterial finishing solutions, self-assembly stock solutions, and intermediates for the preparation of metal nanomaterials.

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