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A kind of aqueous solution of hybrid material loaded with metal ions and its preparation method

A technology for loading metals and hybrid materials, which is applied in the field of aqueous solutions of hybrid materials loaded with metal ions and its preparation, and can solve the problems of inability to guarantee the stable existence of metal ions, poor water solubility, and difficulty in stable dispersion.

Active Publication Date: 2018-10-23
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, in CN101450385A and CN103785854A, nano-silver and nano-gold particles were prepared by using sodium carboxymethylcellulose 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 precipitates and suspensions, 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.

Method used

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  • A kind of aqueous solution of hybrid material loaded with metal ions and its preparation method
  • A kind of aqueous solution of hybrid material loaded with metal ions and its preparation method
  • A kind of aqueous solution of hybrid material loaded with metal ions and its preparation method

Examples

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Embodiment 1

[0066] A loaded Ag +The preparation method of the hybrid material aqueous solution, under the condition of 20 ℃, the mass percent concentration is 0.5% amino group-containing chitosan aqueous solution mixed with the mass percent concentration of 3% carboxyl-containing n-butyric acid aqueous solution, wherein, the shell The relative molecular weight of polysaccharide is 240000, the molecular weight of n-butyric acid is 88.1, the molar ratio of chitosan and n-butyric acid is 1:0.3, accompanied by stirring; use 0.1mol / L HCl solution to adjust the pH value of the reaction system to 4 , and then dropwise added AgNO at a concentration of 0.005 g / mL to the mixture 3 Aqueous solution, AgNO 3 The molar ratio with chitosan is 0.1:1, stir after the dropwise addition, and the duration is 1h to obtain a loaded Ag with a mass percentage concentration of 0.5%. + Aqueous solutions of hybrid materials.

Embodiment 2

[0068] A loaded Fe 2+ The preparation method of the hybrid material aqueous solution, under the condition of 60 ℃, the carboxymethyl chitosan aqueous solution containing the amino group of 3% by mass percent concentration is mixed with the n-valeric acid aqueous solution containing carboxyl group of 10% by mass percent concentration, Wherein, the relative molecular weight of carboxymethyl chitosan is 10000, the molecular weight of n-valeric acid is 102.13, the molar ratio of carboxymethyl chitosan and n-valeric acid is 1:1, accompanied by stirring; adopt 0.3mol / L The HCl solution adjusted the pH value of the reaction system to 6, and then added dropwise FeCl with a concentration of 2 g / mL in the mixed solution. 2 Aqueous solution, FeCl 2 The molar ratio with carboxymethyl chitosan is 10:1, stir after the dropwise addition, and the duration is 2h, that is, the loaded Fe with a mass percentage concentration of 10.5% is obtained. 2+ Aqueous solutions of hybrid materials.

Embodiment 3

[0070] A loaded Fe 3+ The preparation method of the hybrid material aqueous solution, under the condition of 30 ℃, mix the aqueous solution of polyacrylamide containing amino group with the concentration of 1% by mass percentage and the aqueous solution of n-hexanoic acid containing carboxyl group with the concentration of 4% by mass percentage, wherein, polypropylene The relative molecular weight of the amide is 1×10 6 , the molecular weight of n-hexanoic acid is 115.15, the molar ratio of polyacrylamide and n-hexanoic acid is 1:0.4, accompanied by stirring; using 0.05mol / L of H 2 SO 4 The solution adjusts the pH value of the reaction system to 5, and then drips FeCl with a concentration of 0.1 g / mL in the mixed solution 3 Aqueous solution, FeCl 3 The molar ratio with polyacrylamide is 0.5:1, stir after the dropwise addition, and the duration is 1.5h, that is to say, a loaded Fe with a mass percentage concentration of 1.5% is obtained. 3+ Aqueous solutions of hybrid mater...

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Abstract

The invention relates to a hybrid material water solution loading metal ions, and a preparation method thereof. The hybrid material water solution is a solution formed by dissolving a hybrid material in water. The hybrid material is composed of carrier molecules A, stabilizing agent molecules B and metal ions. The method comprises the following steps: a water solution of A and a water solution of B are mixed by stirring; the pH of the mixed solution is regulated; a metal ionic salt solution is dropped into the mixed solution; and stirring is carried out, such that the hybrid material water solution is obtained. In the hybrid material, the metal ions are stably and effectively connected to the molecular chain of carrier molecules in forms of ion bonds and coordination bonds, such that the hybrid material has the advantages of good solubility and adjustable metal ion loading amount. The preparation method of the hybrid material water solution has the advantages of no pollution, less product impurity and simple operation. The prepared hybrid material solution loading metal ions can be widely applied in the aspects of antibacterial finishing solutions, self-assembly stock solutions, metal nano-grade material preparation intermediates and the like.

Description

technical field [0001] The invention relates to an aqueous solution of a hybrid material loaded with metal ions and a preparation method thereof, in particular to a stable water-soluble aqueous solution of a 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. Such hybrid materials are widely used in metal ion adsorption materials, catalytic materials, self-assembly units, antibacterial materials, flame retardant materials etc. [0003] The hydroxyl, amino, carboxyl and other groups 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 chitosan acetic acid solution...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/03C08L5/08C08L33/26C08L5/04C08L1/28C08L33/02C08K3/16C08K3/28C08K3/30
CPCC08J3/03C08J2301/28C08J2305/04C08J2305/08C08J2333/02C08J2333/26C08J2471/00C08K3/16C08K3/28C08K3/30C08K2003/168C08K2003/3045C08L1/286C08L5/08C08L33/02C08L33/26C08L5/04C08L71/00
Inventor 孙宾纪晓寰朱美芳江晓泽周哲陈文萍
Owner DONGHUA UNIV