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Method for loading silver nano-particles on cellulose-containing material

A technology of silver nanoparticles and cellulose, which is applied in the directions of plant fibers, fiber processing, nanotechnology, etc., can solve the problems of complicated operation steps of the preparation method, time-consuming production, complicated operation steps, etc., and achieves easy mass production, firm adhesion, Simple craftsmanship

Active Publication Date: 2012-09-19
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These preparation methods need to prepare nano-silver in advance, and then load it, the operation steps are cumbersome, and the production is also time-consuming.
[0004] Chinese patent CN101586309A (application number: 200910087235.8) discloses a method for preparing a bacterial cellulose membrane in situ composited elemental nano-silver. The reaction of based chemical reagents in situ generates silver single substance nanoparticles in its network structure. This patent is based on the in situ synthesis of silver mirror reaction. The surface of the material is required to be clean in order to better load silver, so the surface of the material needs to be pretreated and Preparation method operation steps are cumbersome

Method used

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  • Method for loading silver nano-particles on cellulose-containing material
  • Method for loading silver nano-particles on cellulose-containing material
  • Method for loading silver nano-particles on cellulose-containing material

Examples

Experimental program
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Effect test

Embodiment 1

[0024] A method for loading silver nanoparticles on a cellulose-containing material, the steps are as follows:

[0025] 1) Weigh 0.4 mmol silver nitrate and dissolve it in 40 ml water, adjust the pH to 10 with sodium hydroxide, add ammonia water until the precipitate just dissolves, and obtain silver ammonia solution;

[0026] 2) Soak 0.5 g of filter paper into the silver-ammonia solution prepared in step 1), react in a water bath at 70°C for 60 minutes, and finish the reaction with silver nanoparticles loaded on the surface of the cellulose-containing material;

[0027] 3) The cellulose-containing material loaded with silver nanoparticles on the surface obtained in step 2) is washed with water, and dried in air.

Embodiment 2

[0028] Embodiment 2: A method for loading silver nanoparticles on a cellulose-containing material, the steps are the same as in Example 1, except that silver acetate is used instead of silver nitrate.

Embodiment 3

[0029] Embodiment 3: A method for loading silver nanoparticles on a cellulose-containing material, the steps are the same as in Example 1, except that silver perchlorate is used instead of silver nitrate.

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Abstract

The invention relates to a method for loading silver nano-particles on a cellulose-containing material, belonging to the field of the preparation of inorganic nano materials. By using the structure that cellulose is rich in hydroxyl and by using the cellulose as a reducing agent, the in-situ growth of nano silver on the cellulose is realized under the condition of heating. The reaction is simple to operate and easy to control, the repeatability is good, no pollution is caused, the cost of raw materials is low and the large-scale production is easy to realize. The obtained cellulose-containing material loaded with the nano silver has the advantages of even nano silver size and distribution and high adhering firmness, and can be widely used for antibacterial packaging paper, medical nursing sterilizing articles, paper for women and the like. The nano silver loaded on the cellulose-containing material has very high and stable enhancing effect and the material can also be used for surface enhanced Raman spectrum substrates.

Description

technical field [0001] The invention relates to a method for loading silver nanoparticles on cellulose-containing materials, and belongs to the technical field of inorganic nanometer material preparation. Background technique [0002] Nano-silver has a strong inhibitory and killing effect on dozens of pathogenic microorganisms such as Escherichia coli, Neisseria gonorrhoeae, and Chlamydia trachomatis, and will not produce drug resistance. health and other fields. Silver nanomaterials are also metals with the best surface-enhanced Raman scattering effect. Silver is stable and not easily oxidized. Cellulose is an important raw material for papermaking. In addition, products based on cellulose are also widely used in textiles, medicine and health, and scientific research equipment. However, plant fiber is very easy to absorb various secretions and exfoliations from the human body, and becomes a nutrient source for bacteria. It is very easy to be contaminated with bacteria in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/83D21H17/70D21H21/36B22F9/24B82Y40/00D06M101/06
Inventor 占金华孟艳静来永超赵全芹
Owner SHANDONG UNIV
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