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Preparation method of antibacterial straw loaded with silver particles

A technology of silver particles and straw is applied in the field of preparation of antibacterial straw, which can solve the problems of shortening the service life, affecting the living environment, moldy wallboard, etc., and achieving the effects of reducing pollution, easy operation and low cost.

Pending Publication Date: 2022-05-27
ANHUI SCI & TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These fumes bring inconvenience to people's life and work, and greatly affect our living environment
[0003] With the development of technology, straws are used more and more widely. At present, straws are more widely used, and they are processed into straw bricks or straw boards, which are used to make wall panels or various building materials. However, after long-term use, people find that Moldy phenomenon will appear on the wallboard, especially in a humid environment, which will greatly shorten its service life

Method used

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  • Preparation method of antibacterial straw loaded with silver particles
  • Preparation method of antibacterial straw loaded with silver particles
  • Preparation method of antibacterial straw loaded with silver particles

Examples

Experimental program
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Effect test

Embodiment 1

[0045] The present invention relates to a method for preparing antibacterial straw loaded with silver particles, comprising the following steps:

[0046] S1, take the soybean straw, remove the leaves and roots, and then wash, dry and truncate the straw in turn with clean water, sift it with a 20 mesh sieve to obtain a straw greater than 20 mesh, that is, a length of 1cm, and then wash the straw of this length with deionized water and dry it.

[0047] S2, the use of lye to treat the straw: take 1g S1 of the straw obtained soaked in a volume of 10mL, the concentration of 1mol / L naOH solution, through the temperature of 60 °C water bath reflux heating state reaction 3h, and while heating while stirring, and then with deionized water filter washing straw, in the use of volume of 10mL, the concentration of 0.1mol / L hydrochloric acid neutralize and the residual alkali on the surface of the straw, and stand for 15min, filter wash three times, The stalks are separated and dried at a t...

Embodiment 2

[0083] S1, take the rice straw and remove the leaves and roots, and then wash, dry and truncate the straw in turn with clean water, sift it with a 20 mesh sieve to obtain a straw greater than 20 mesh, that is, a length of 1cm, and then wash the straw of this length with deionized water and dry it.

[0084] S2, the use of lye to treat the straw: take 1g S1 of the straw obtained soaked in a volume of 20mL, the concentration of 1mol / L NaOH solution, through the temperature of 80 °C water bath reflux heating state reaction 4h, while heating while stirring, and then with deionized water filtering to wash the straw, in the use of volume of 10mL, the concentration of 0.3mol / L hydrochloric acid neutralize and the residual alkali on the surface of the straw, stand for 15min, filter and wash three times, The stalks are separated and dried at a temperature of 60 °C.

[0085] S3, the load of silver particles: the straw obtained in S2 took 0.6g into the volume of 5mL, the concentration of ...

Embodiment 3

[0122] S1, take the wheat straw and remove the leaves and roots, and then wash, dry and truncate the straw in turn with clean water, sift it with a 20 mesh sieve to obtain a straw greater than 20 mesh, that is, a length of 1 cm, and then wash the straw of this length with deionized water and dry it.

[0123] S2, the use of lye to treat the straw: take 1g S1 of the straw obtained soaked in a volume of 10mL, the concentration of 1mol / L NaOH solution, through the temperature of 70 ° C water bath reflux heating state reaction 2h, while heating while stirring, and then with deionized water filtering to wash the straw, in the use of volume of 10mL, the concentration of 0.2mol / L hydrochloric acid neutralize and residual alkali on the surface of the straw, stand for 10min, filter and wash three times, The stalks are separated and dried at a temperature of 80 °C.

[0124] S3, the load of silver particles: the straw obtained in S2 took 0.7g into the volume of 10mL, the concentration of ...

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Abstract

The invention relates to a preparation method of antibacterial straw loaded with silver particles, which comprises the following steps: S1, screening the straw by using a 15-25-mesh sieve, washing the obtained straw by using deionized water, and drying; s2, heating the straw obtained in S1 in a sodium hydroxide solution in a water bath, stirring, separating out the straw, adding an acid solution to neutralize alkali, standing, washing, separating out the straw, and drying the straw; and S3, putting the straws obtained in S2 into a silver nitrate solution, standing, adding an ascorbic acid solution, heating in a water bath, stirring, separating to obtain straws, washing, and drying to obtain the antibacterial straws. The preparation method has the advantages that the silver particle-loaded antibacterial straw is obtained by utilizing the loading effect of the straw on silver ions and using the ascorbic acid solution for reduction, and the preparation method is stable in structure, environmentally friendly, low in cost and easy to operate, is suitable for various plant straws and can be applied to related fields such as furniture and chemical engineering.

Description

Technical field [0001] The present invention relates to the functional technical field of materials, specifically a method for preparing antibacterial straw loaded with silver particles. Background [0002] As a natural cellulose fiber, straw fiber has good biodegradable properties and can become an environmentally friendly product. At present, these resources are not only not well utilized, but we can see the burning smoke in the fields every summer and autumn. These smokes bring inconvenience to people's lives and work, and greatly affect our living environment. [0003] With the development of technology, the application of straw is more and more extensive, at this stage of straw application is more, processed into straw bricks or straw board, used to make wall panels or various building materials, but after a long time of use, people found that wall panels will appear moldy phenomenon, especially in a humid environment, more serious, resulting in its service life is greatly s...

Claims

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Application Information

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IPC IPC(8): C08L97/02C08K3/08
CPCC08K3/08C08K2003/0806C08L97/02Y02W30/91
Inventor 姚悦樊晓宇付顺利侯昌宇
Owner ANHUI SCI & TECH UNIV
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