CN109744255A - A kind of surface coating method of spherical nano silver antibacterial material - Google Patents
A kind of surface coating method of spherical nano silver antibacterial material Download PDFInfo
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- CN109744255A CN109744255A CN201811495472.3A CN201811495472A CN109744255A CN 109744255 A CN109744255 A CN 109744255A CN 201811495472 A CN201811495472 A CN 201811495472A CN 109744255 A CN109744255 A CN 109744255A
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- nano silver
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- antibacterial material
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Abstract
The invention discloses a kind of surface coating methods of spherical nano silver antibacterial material, include the following steps: that (1) is added surfactant and is sufficiently mixed in oxide spinel is silver-colored, is subsequently placed in hydrothermal reaction kettle and deionized water and the reaction decomposition generation nano silver colloidal sol under 180 DEG C of high temperature is added；(3) nano silver colloidal sol is centrifuged by high speed tabletop centrifuge, then it is dried in electric heating constant temperature ancient customs drying box, the spherical nano silver antibacterial material that spherical, partial size is 40nm is obtained after carrying out vibrating dispersion finally by ultrasonator, each crystal face of spherical nano silver antibacterial material is coated by the molecule of surfactant；The surfactant includes one-component A, or including component A and component B；Component A is polyvinylpyrrolidone, and component B is polyvinyl alcohol or/and polyethylene glycol.The surface coating method simple possible, no pollution to the environment, cost is relatively low, is easy to industrialize.
Description
Technical field
The present invention relates to the technical field of powder body material surface cladding process more particularly to a kind of spherical nanometer silver antimicrobials
The surface coating method of material.
Background technique
Since nano silver particles are in microelectronics, photoelectron, catalysis, biosensor, data storage, magnetic device, medicine
Antibacterial, the potential application of Surface enhanced Raman spectroscopy etc., it has also become the hot fields of people's research.
Nano silver can have strong inhibition to the tens of kinds of pathogenic microorganisms such as Escherichia coli, gonococcus, chlamydia trachomatis
And killing effect, and drug resistance will not be generated.It is used cooperatively, also be can reach some good with nano silver and other materials
The effect of antibacterial deodourizing
The present invention is directly to decompose silver carbonate under hydrothermal condition to obtain nano silver particles there is not yet pertinent literature is reported, originally
Text is deposited in the reaction of hydrothermal reaction kettle high temperature, under the protection and peptizaiton of surfactant, hydrothermal decomposition with silver carbonate
The nano silver particles for being coated with active agent molecule are formed, are used for fields such as antibacterials.
Summary of the invention
The purpose of the invention is to overcome the above-mentioned prior art, a kind of spherical nano silver antibacterial material is provided
Surface coating method, the surface coating method of the spherical nano silver antibacterial material exists silver carbonate sediment by hydro-thermal method
It is generated under the conditions of hydrothermal high-temperature and resolves into silver atoms, with the progress of reaction, new silver atoms are increasingly generated, when these silver are former
When the concentration of son reaches critical over-saturation and spends, nucleation will occurs in they, under the action of surfactant, the silver of formation
Nucleus is grown up again generates spherical nano-Ag particles, and the nano silver particles surface of generation is covered by a large amount of surfactant molecule
, to obtain as the anti-biotic material of the spheroidal nano silver structure of class.The surface coating method simple possible, to environment without
Pollution, cost is relatively low, is easy to industrialize.
The technical solution adopted by the present invention to solve the technical problems is: a kind of surface of spherical nano silver antibacterial material
Method for coating includes the following steps:
(1) surfactant is added in oxide spinel silver and is sufficiently mixed, is subsequently placed in be added in hydrothermal reaction kettle and go
Ionized water and the reaction decomposition generation nano silver colloidal sol under 180 DEG C of high temperature；
(3) nano silver colloidal sol is centrifuged by high speed tabletop centrifuge, it is then dry in electric heating constant temperature ancient customs
It is dried in case, obtains the spherical nano silver that spherical, partial size is 40nm after carrying out vibrating dispersion finally by ultrasonator
Anti-biotic material, each crystal face of spherical nano silver antibacterial material are coated by the molecule of surfactant；
The surfactant includes one-component A, or including component A and component B；Component A is polyvinylpyrrolidine
Ketone, component B are polyvinyl alcohol or/and polyethylene glycol.
Further, the surfactant is polyvinylpyrrolidone.
Further, the silver carbonate chemical equation are as follows: 2Ag2CO3=4Ag+2CO2↑+O2↑。
In conclusion the surface coating method of spherical nano silver antibacterial material of the invention is by hydro-thermal method silver carbonate
Sediment generates under the conditions of hydrothermal high-temperature and resolves into silver atoms, and with the progress of reaction, new silver atoms are increasingly generated, when
The concentration of these silver atoms reaches critical over-saturation when spending, and nucleation will occurs in they, under the action of surfactant,
The silver-colored nucleus of formation is grown up again generates spherical nano-Ag particles, and the nano silver particles surface of generation is by a large amount of surfactant
Molecule is covered with, to obtain as the anti-biotic material of the spheroidal nano silver structure of class.The surface coating method simple possible,
No pollution to the environment, cost is relatively low, is easy to industrialize.
Detailed description of the invention
Fig. 1 is the SEM figure of spherical nano silver antibacterial material；
Fig. 2 is the x-ray diffraction pattern of spherical nano silver antibacterial material.
Specific embodiment
Embodiment 1
A kind of surface coating method of spherical nano silver antibacterial material, includes the following steps: described in the present embodiment 1
(1) surfactant is added in oxide spinel silver and is sufficiently mixed, is subsequently placed in be added in hydrothermal reaction kettle and go
Ionized water and the reaction decomposition generation nano silver colloidal sol under 180 DEG C of high temperature；
(3) nano silver colloidal sol is centrifuged by high speed tabletop centrifuge, it is then dry in electric heating constant temperature ancient customs
It is dried in case, obtains the spherical nano silver that spherical, partial size is 40nm after carrying out vibrating dispersion finally by ultrasonator
Anti-biotic material, each crystal face of spherical nano silver antibacterial material are coated by the molecule of surfactant；
The surfactant includes one-component A, or including component A and component B；Component A is polyvinylpyrrolidine
Ketone, component B are polyvinyl alcohol or/and polyethylene glycol.
In the present embodiment, the surfactant is polyvinylpyrrolidone.
As can be seen from Figure 1, nano silver is spherical in shape, and average grain diameter is in 40nm or so.Silver-colored crystal formation experience nucleation with
The process of growth, pattern can usually be adjusted by the balance between control nucleation and the speed of growth.Silver carbonate is in hydro-thermal height
It is easy to generate under the conditions of temperature to resolve into silver, the chemical equation of whole process are as follows: 2Ag2CO3=4Ag+2CO2↑+O2↑, with
Reaction progress, new silver atoms increasingly generate, when the concentration of these silver atoms, which reaches critical over-saturation, to be spent, they will
Nucleation occurs, under the action of surfactant, the silver-colored nucleus of formation is grown up again generates spherical nano-Ag particles, generates
Nano silver particles surface be covered with by a large amount of active agent molecule, since space steric effect had both controlled the speed of reaction,
Nano silver particles are inhibited to form big particle because of collision again, so that nano silver particles be hindered to reunite.The each crystal face of nucleus of silver
It is all coated by PVP, relatively, rate of crystalline growth is also more consistent for reactivity each other, to obtain as class ball
The nano silver particles of shape.
Due to joined surfactant, so that the little particle dispersion adhered in the larger particles reunited, so that always
Body size tends to be more uniform.The surfactant of addition can play the role of dispersion and protection in the reaction, particle formation with
In growth course, it can inhibit the unconfined diffusion of nano silver particles and attachment, control the anisotropic growth of particle, thus it is right
There is larger impact in the formation of nanoparticle and form.It can be seen that the presence of surfactant has the formation of nano silver
There is important role, significant impact is formed with for nano silver particles spherical morphology.
As can be seen from Figure 2,5 peak positions of nano silver are consistent with data on JCPDS card 04-0783, correspond respectively to stand
(111) of prismatic crystal system silver, (200), (220), (311), (222) crystal face, nano silver are the elemental silver of cubic system, the curve
Diffraction maximum is quite sharp, shows that nano silver crystal property is good.
The above described is only a preferred embodiment of the present invention, not making any form to technical solution of the present invention
On limitation.According to the technical essence of the invention any simple modification to the above embodiments, equivalent variations and repair
Decorations, in the range of still falling within technical solution of the present invention.
Claims (3)
1. a kind of surface coating method of spherical nano silver antibacterial material, which comprises the steps of:
(1) surfactant is added in oxide spinel silver and is sufficiently mixed, is subsequently placed in hydrothermal reaction kettle and deionization is added
Water and the reaction decomposition generation nano silver colloidal sol under 180 DEG C of high temperature；
(3) nano silver colloidal sol is centrifuged by high speed tabletop centrifuge, then in electric heating constant temperature ancient customs drying box
It is dried, obtains the spherical nanometer silver antimicrobial that spherical, partial size is 40nm after carrying out vibrating dispersion finally by ultrasonator
Material, each crystal face of spherical nano silver antibacterial material are coated by the molecule of surfactant；
The surfactant includes one-component A, or including component A and component B；Component A is polyvinylpyrrolidone, group
Dividing B is polyvinyl alcohol or/and polyethylene glycol.
2. a kind of surface coating method of spherical nano silver antibacterial material according to claim 1, which is characterized in that described
Surfactant is polyvinylpyrrolidone.
3. a kind of surface coating method of spherical nano silver antibacterial material according to claim 2, which is characterized in that described
Silver carbonate chemical equation are as follows: 2Ag2CO3=4Ag+2CO2↑+O2↑。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811495472.3A CN109744255A (en) | 2018-12-07 | 2018-12-07 | A kind of surface coating method of spherical nano silver antibacterial material |
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| CN201811495472.3A CN109744255A (en) | 2018-12-07 | 2018-12-07 | A kind of surface coating method of spherical nano silver antibacterial material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111449086A (en) * | 2020-05-11 | 2020-07-28 | 武汉工程大学 | Colloidal silver/polymer mixed disinfectant and preparation method and application thereof |
| CN112618382A (en) * | 2020-10-20 | 2021-04-09 | 华凯科技(广州)有限公司 | Mild wet tissue compound liquid |
-
2018
- 2018-12-07 CN CN201811495472.3A patent/CN109744255A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111449086A (en) * | 2020-05-11 | 2020-07-28 | 武汉工程大学 | Colloidal silver/polymer mixed disinfectant and preparation method and application thereof |
| CN112618382A (en) * | 2020-10-20 | 2021-04-09 | 华凯科技(广州)有限公司 | Mild wet tissue compound liquid |
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