Method for preparing gelatin protein and gold nanoparticle composite thin film and application of gelatin protein and gold nanoparticle composite thin film

A gold nanoparticle and composite film technology, which is applied in the field of preparation of gelatin protein gold nanoparticle composite film

Inactive Publication Date: 2013-05-08
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, all the nanostructures synthesized using gelatin as a template are dispersed particle systems, and there is no report on the corresponding film material, but the film has the advantages of easier operation and reuse.

Method used

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  • Method for preparing gelatin protein and gold nanoparticle composite thin film and application of gelatin protein and gold nanoparticle composite thin film
  • Method for preparing gelatin protein and gold nanoparticle composite thin film and application of gelatin protein and gold nanoparticle composite thin film
  • Method for preparing gelatin protein and gold nanoparticle composite thin film and application of gelatin protein and gold nanoparticle composite thin film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 1) The same volume of 4mM copper nitrate aqueous solution and 1.4mM ethanolamine aqueous solution were mixed under magnetic stirring, and left for 2 days to generate Cu(OH) 2 Nanowire solution, 20ml Cu(OH) 2 Nanowire solution filtration forms a nanometer thick hydrophilic mesoporous membrane on a polycarbonate porous membrane with a pore size of 200 nm;

[0017] 2) Add 4.9ml Cu(OH) 2 The nanowire solution and 0.1ml of 1% gelatin solution were mixed and stirred for 5 minutes to obtain gelatin and Cu(OH) 2 Nanowire composite solution, and filtered onto the nanoscale thick hydrophilic mesoporous membrane, with 3ml, the glutaraldehyde solution that the mass percent is 2.5% glues together 2 hours, obtains gelatin Cu(OH) 2 Nanowire composite film, gelatin Cu(OH) 2 The nanowire composite film was removed from the polycarbonate porous membrane plate, and the Cu(OH) was removed by dilute hydrochloric acid with pH=2 2 nanowires, resulting in unsupported gelatin films;

[001...

Embodiment 2

[0021] 1) The same volume of 4mM copper nitrate aqueous solution and 1.4mM ethanolamine aqueous solution were mixed under magnetic stirring, and left for 3 days to generate Cu(OH) 2 Nanowire solution, 20ml Cu(OH) 2 Nanowire solution filtration forms a nanometer thick hydrophilic mesoporous membrane on a polycarbonate porous membrane with a pore size of 200 nm;

[0022] 2) Add 4.9ml Cu(OH) 2 The nanowire solution and 0.1ml of gelatin solution with a mass fraction of 1% were mixed and stirred for 6 minutes to obtain gelatin and Cu(OH) 2 Nanowire composite solution, and filtered onto the nano-scale thick hydrophilic mesoporous membrane, with 3ml, the glutaraldehyde solution of 2.5% by mass percent was glued for 3 hours to obtain gelatin Cu(OH) 2 Nanowire composite film, gelatin Cu(OH) 2 The nanowire composite film was removed from the polycarbonate porous membrane plate, and the Cu(OH) was removed by dilute hydrochloric acid with pH=2 2 nanowires, resulting in unsupported gel...

Embodiment 3

[0026] 1) The same volume of 4mM copper nitrate aqueous solution and 1.4mM ethanolamine aqueous solution were mixed under magnetic stirring, and left for 3 days to generate Cu(OH) 2 Nanowire solution, 20ml Cu(OH) 2 Nanowire solution filtration forms a nanometer thick hydrophilic mesoporous membrane on a polycarbonate porous membrane with a pore size of 200 nm;

[0027] 2) Add 4.9ml Cu(OH) 2 The nanowire solution and 0.1ml of gelatin solution with a mass fraction of 1% were mixed and stirred for 6 minutes to obtain gelatin and Cu(OH) 2 Nanowire composite solution, and filtered onto the nano-scale thick hydrophilic mesoporous membrane, with 3ml, the glutaraldehyde solution of 2.5% by mass percent was glued for 3 hours to obtain gelatin Cu(OH) 2 Nanowire composite film, gelatin Cu(OH) 2 The nanowire composite film was removed from the polycarbonate porous membrane plate, and the Cu(OH) was removed by dilute hydrochloric acid with pH=2 2 nanowires, resulting in unsupported gel...

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Abstract

The invention discloses a method for preparing a gelatin protein and gold nanoparticle composite thin film and an application of the gelatin protein and gold nanoparticle composite thin film. By the method for preparing the gelatin protein and gold nanoparticle composite thin film, the gelatin protein and gold nanoparticle composite thin film is prepared by depositing gelatin on a Cu(OH)2 nano wire serving as a filtering layer by a filtering method, performing glue-connection and removing the Cu(OH)2 nano wire and then adsorbing and reducing chloroauric acid radical ions according to a reducing characteristic of the gelatin under the action of charge adsorption of the gelatin. The sizes of gold nanoparticles in the gelatin protein thin film can be controlled by controlling the pH value of a chloroauric acid solution and the reaction time of the gelatin protein thin film in the chloroauric acid solution. The method is simple and feasible; the gelatin protein and gold nanoparticle composite thin film can be used as a catalyst and the catalytic conversion efficiency of ortho-nitroaniline is extremely high; and the gelatin protein and gold nanoparticle composite thin film has the advantages of high repetitiveness and convenience in operation.

Description

technical field [0001] The invention relates to a preparation method of a film, in particular to a preparation method of a gelatin protein gold nanoparticle composite film and its application. technical background [0002] The biomineralization method is a method of imitating the natural process in organisms and using organic substances to modulate the growth of inorganic substances with a certain structure. The preparation of nanoparticles by biomineralization is a relatively new field of interdisciplinary research involving related fields such as materials, chemistry, biology, and medicine. Among many organic matrices, proteins have attracted special attention because of their three-dimensional structure and unique properties. Gelatin can be used as a good template for preparing nanoparticles, and because of its good biocompatibility, it can be used in the biomedical field after simple modification. All the nanostructures synthesized using gelatin as a template in the cu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/06C07C209/36C07C211/51
Inventor 彭新生史力
Owner ZHEJIANG UNIV
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