CN106689201A - Nanosilver antibacterial agent and preparation method thereof - Google Patents
Nanosilver antibacterial agent and preparation method thereof Download PDFInfo
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- CN106689201A CN106689201A CN201611236763.1A CN201611236763A CN106689201A CN 106689201 A CN106689201 A CN 106689201A CN 201611236763 A CN201611236763 A CN 201611236763A CN 106689201 A CN106689201 A CN 106689201A
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- nano silver
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- silver antimicrobials
- titanium dioxide
- silver
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/16—Heavy metals; Compounds thereof
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/14—Plasma, i.e. ionised gases
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
- A61L9/22—Ionisation
Abstract
The invention discloses a nanosilver antibacterial agent and a preparation method thereof, and belongs to the technical field of preparation of antibacterial agents. The above nanosilver antibacterial agent is prepared from the following raw materials in parts by weight: 0.8-1.6 parts of silver nitrate, 80-120 parts of titanium dioxide, 0.19-0.39 parts of sodium hydroxide and 60-120 parts of water. Sodium hydroxide and silver nitrate just react completely without generating corrosive substances during reaction so as to realize pollution-free preparation; the nanosilver antibacterial agent is simple in preparation process and low in cost; the prepared nanosilver antibacterial agent has a relatively good antibacterial effect for aspergillus niger, aspergillus terreus and the like.
Description
Technical field
The present invention relates to antiseptic preparing technical field, more particularly to a kind of nano silver antimicrobials and preparation method thereof.
Background technology
With the quickening of process of industrialization, the improvement of people's living standards, most of public place and family are required for dress
Decorations finishing, to beautify indoor environment, the antibacterial and mouldproof performance of decorating and renovating material is closely related with IAQ.
Decorative organic finishing material, because of a large amount of organic matters that it contains, under the environment such as moist, warm, atmosphere draught-free
Easy mould growth.Inorganic decorating finishing material typically also contains a small amount of organic matter, even if the inorganic material without organic matter,
Because organic matter pickup, the attachment of entrainment organic matter dust, and can easily be grown under the environment such as moist, warm, atmosphere draught-free
Mould.The mould of growth is flown away in atmosphere, meeting severe contamination indoor environment, and people contacts or the harmful mould of suction through skin, meeting
Cause nerve and endocrine disturbance, immunosupress, carcinogenic teratogenesis, lesions of liver and kidney, breeding difficulty etc..
Antibacterial and mouldproof needs the comprehensive regulation, wherein, for decorating and renovating material, the most commonly used and effective method be
Added in material and be applicable appropriate antiseptic.Inorganic antiseptic is inhaled using the antibacterial ability of the metals such as silver, copper, zinc by physics
The methods such as attached ion exchange, the surface system of the porous materials such as fluorite, silica gel is fixed on by the metals such as silver, copper, zinc (or its ion)
Into antiseptic, it is then added into obtaining the material with antibacterial ability in corresponding product.The metals such as mercury, cadmium, lead
Also there is antibacterial ability, but it is harmful；Copper, nickel, lead plasma carry color, will influence the attractive in appearance of product, and zinc has necessarily
Antibiotic property, but its antibacterial strength is only the 1/1000 of silver ion.
The principal item of organic antibacterial agent has vanillic aldehyde or ethyl vanillin aldehydes compound, is usually used in polyethylene kind food bag
In dress film, antibacterial action is played.There is anilid class, imidazoles, thiazoles, isothiazolone derivative, quaternary ammonium salt, double in addition
Croak class, phenols etc..The security of current organic antibacterial agent is still under study for action.In general organic antibacterial agent poor heat resistance is a little, holds
Facile hydrolysis, the term of validity is short.Natural antibacterial agent essentially from natural plants extraction, such as chitin, mustard, castor oil, horseradish,
It is easy to use, but antibacterial action is limited, and heat resistance is poor, and sterilizing rate is low, it is impossible to which broad-spectrum long-acting is used and quantity is little.
Silver ion class antiseptic is the most frequently used antiseptic, white fine powdered, and heat resisting temperature is up to more than 1300 DEG C.
The carrier of silver ion class antiseptic has glass, basic zirconium phosphate, zeolite, ceramics, activated carbon etc..Acted synergistically sometimes for improving, then
Add some copper ions, zinc ion.In addition with inorganic antiseptics such as zinc oxide, cupric oxide, ammonium dihydrogen phosphate, lithium carbonates.It is existing
Have in technology, CN102205244A discloses silver-colored titanium dioxide anti-bacterial agent of a kind of load and preparation method thereof, is made first in the invention
For the carrier titanium dioxide for having high length-diameter ratio, silver particles load is then carried out.The excessive infusion process utilized in the invention is born
Carry during silver particles, the titanium dioxide of preparation is added in silver nitrate aqueous solution, dry, calcining prepares the silver-colored dioxy of load
Change titanium antiseptic.Silver nitrate is silver, nitrogen dioxide and oxygen in titanium dioxide surface or internal breakup in preparation process, but
It is that the nitrogen dioxide for generating easily causes environmental pollution.
The content of the invention
To solve the problems, such as organic antibacterial agent in the prior art and inorganic antiseptic and preparing load silver antibacterial agent mistake
Problem of environmental pollution in journey, the present invention provides a kind of nano silver antimicrobials and preparation method thereof.
In order to solve the above technical problems, present invention offer technical scheme is as follows：
Nano silver antimicrobials, are made up of the raw material of following weight portion：
Further, nano silver antimicrobials, are made up of the raw material of following weight portion：
Further, the mass content of the silver nitrate is not less than 99%.
Further, the titanium dioxide is anatase titanium dioxide, and the titanium dioxide particle diameter is 100-500nm.
Further, the consumption of the NaOH is 0.24 times of the silver nitrate consumption, makes NaOH and nitric acid
Silver just reacts completely.
On the other hand, the present invention provides a kind of preparation method of above-mentioned nano silver antimicrobials, comprises the following steps：
Step 1：Prepare silver nitrate aqueous solution and sodium hydrate aqueous solution；
Step 2：By in titanium dioxide addition epicyclic mixer, silver nitrate aqueous solution is subsequently adding, mixed to uniform, add hydrogen
Aqueous solution of sodium oxide, mixes to uniform, and wet feed is obtained；
Step 3：Above-mentioned wet feed is put into dried process in box electrically heated drying cabinet, siccative is obtained；
Step 4：Above-mentioned siccative is put into calcination processing in electric heating roller kilns, calcining material is obtained；
Step 5：Crushed during above-mentioned calcining material is added into eddy mill, sieving obtains final product nano silver antimicrobials.
Further, in the step 3, the dried process is that 105 DEG C of dryings to free water content is less than 2%.
Further, in the step 4, the calcination processing is that 280 DEG C of -300 DEG C of process times are no less than 1 hour.
Further, in the step 5, the mesh number of the sieve is 80 mesh.
Principle during specific experiment, such as following reaction equation：
First, titanium dioxide is well mixed with silver nitrate aqueous solution, silver ion is uniformly dispersed on titanium white powder particles, plus
After entering sodium hydrate aqueous solution, silver ion reacts with NaOH, generates silver hydroxide.Hydroxide in drying process afterwards
Silver-colored dehydration is decomposed, and generates silver oxide, and during calcination processing, generation nanomorphic silver successfully prepare and receive the silver oxide of generation
Rice silver antibacterial agent.
In course of reaction, when NaOH is insufficient to allow silver nitrate to react completely, silver nitrate has a residue, silver nitrate point
Solution temperature is 440 DEG C, i.e., silver nitrate can not resolve into silver-colored simple substance in subsequent calcination processing procedure；When sodium hydroxide concentration is excessive
When, unnecessary NaOH residue is had, the strong basicity of NaOH also results in the damage of equipment.Therefore, the hydrogen of addition
The amount of sodium oxide molybdena is just reacted completely with silver nitrate, and so there will be neither redundant nitric acid silver remaining is not in again unreacted hydrogen
Sodium oxide molybdena, does not produce any pernicious gas in course of reaction, realize the pollution-free preparation of power nano silver antimicrobials.
In the antiseptic, the active component argent with antibacterial action is carried on titanium dioxide particle surface with nanomorphic,
The quantity in activated centre is maximized, the utilization rate of active material noble silver is improved, the cost of silver antibacterial agent is reduced, made up expensive
Metal silver antibacterial agent is expensive, it is difficult to the defect of popularization and application；Compensate for organic antibacterial agent volatilize on a small quantity generation harm, effectively
Phase short defect, compensate for the defect such as produce corrosion harmfulness, the term of validity short people of highly basic in the inorganic antiseptics such as calcium hydroxide.More
The short defect of natural antibacterial agent resource-constrained, poor heat resistance, the term of validity is mended；To application on human skin contact it is harmless, with broad-spectrum sterilization,
Long acting antibiotic, the characteristic such as do not develop immunity to drugs.
Nano silver antimicrobials antimicrobial mode prepared by the present invention has two kinds, and one kind is Nano Silver contact sterilization：Work as Nano Silver
Contacted with pathogen, after the cell membrane/film combination of nano-Ag particles and pathogen, thalline, rapidly and oxygen metabolism can be directly entered
The sulfydryl (- SH) of enzyme is combined, and inactivates enzyme, and blocking respiratory metabolism makes it be choked to death, unique sterilization mechanism so that Nano Silver
Particle can rapidly kill pathogenic bacteria in low concentration, and Nano Silver can kill 650 various bacterias in several minutes.And Nano Silver physics and chemistry
Stable performance, not easy in inactivation, with Durability of antimicrobial effect；Nano Silver can kill various pathogenic microorganisms, nanometer more stronger than antibiotic
Argent grain unique antimicrobial mechanism can directly kill rapidly bacterium, it is lost fertility, therefore, it is impossible to produce under drug resistance
A generation, can be prevented effectively from causes Nano Silver to fail because of drug resistance.Another kind is Nano Silver top layer atom and titanium white powder particles table
Outer-shell electron light/the thermal excitation of titanium atom, produces electron hole pair in layer titania molecule, indoors under air ambient,
Negative oxygen ion and hydroxyl group anion, mould, bacterium, virus in negative oxygen ion and hydroxyl group anion and air etc. can be produced harmful
Microbial reaction, generation carbon dioxide, water and nitrogen etc., carry out thoroughly harmless treatment；Nano Silver contact sterilization and silver, dioxy
Change titanium release negative oxygen ion, the sterilized synergy of hydroxyl group anion, improve the antibacterial and mouldproof ability of product under indoor conditions.
Initiator is done with silver nitrate, carrier is done with technical grade titanium dioxide, NaOH makees nertralizer and hydrolytic reagent, and selection is high
Temperature is decomposed and prepares nanometer silver process, successfully prepares nano silver antimicrobials.Compared with existing nano silver antimicrobials preparation technology, be not required to
Numerous and diverse process for preparing nano titanium oxide and silver ion reduction process, simplify technique, eliminate the nuisances such as heavy metal
Pollution, reduces equipment investment, reduces cost.The invention provides the industrialization production method of the antiseptic, be conducive to resisting
The industrialization and popularization and application of bacterium functional material, are conducive to creating environmental health human settlement.
In sum, beneficial effects of the present invention show as：
1) present invention is reacted completely using NaOH with silver nitrate, generates the sodium nitrate of stabilization, prevents nanometer silver antimicrobial
The pernicious gases such as nitrogen dioxide are produced in agent preparation process, the pollution-free preparation of nano antibacterial agent is realized.
2) by reaction in-situ, the nano-silver loaded that will be prepared is uniformly dispersed on titanium dioxide surface, makes the number in activated centre
Amount is maximized, and improves the utilization rate of active material noble silver, is solved and is directly added into silver-colored simple substance and causes Nano Silver skewness
Even problem；
3) Nano Silver contact sterilization and silver, titanium dioxide release negative oxygen ion, the sterilized synergy of hydroxyl group anion, lifting
The antibacterial and mouldproof ability of product under indoor conditions；
4) present invention prepare nano silver antimicrobials it is with low cost, it is heat-resist, to application on human skin contact it is harmless, with wide spectrum
Sterilization, long acting antibiotic, the advantages of do not develop immunity to drugs；
5) initiator is done with silver nitrate, carrier is done with technical grade titanium dioxide, nertralizer and hydrolytic reagent are made with NaOH, selected
Select pyrolytic and prepare nano silver antimicrobials, preparation process is simple, polluted without nuisance and generate, reduce equipment investment, reduce into
This.
Specific embodiment
For the technical problem, technical scheme and the advantage that to be solved embodiments of the invention are clearer, below in conjunction with
Specific embodiment is described in detail.But the present invention is limited to absolutely not these examples.As described below is only that the present invention is preferably implemented
Example, is only used to explain the present invention, therefore can not be interpreted as the limitation of the scope of the claims of the present invention.It should be pointed out that all
Any modification, equivalent and improvement for being made within the spirit and principles in the present invention etc., should be included in guarantor of the invention
Within the scope of shield.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Embodiment one
A kind of nano silver antimicrobials, are made up of the raw material of following weight portion：
The preparation method of above-mentioned nano silver antimicrobials, comprises the following steps：
Step 1：Silver nitrate is well mixed with 40 parts of water, prepares silver nitrate aqueous solution；NaOH and 20 parts of water mixing, system
Standby sodium hydrate aqueous solution；
Step 2：By in titanium dioxide addition epicyclic mixer, silver nitrate aqueous solution is subsequently adding, mixed to uniform, add hydrogen
Aqueous solution of sodium oxide, mixes to uniform, and wet feed is obtained；
Step 3：It is 1.2wt%, system wet feed to be put into box electrically heated drying cabinet and dries 105 DEG C of dryings to free water content
Obtain siccative；
Step 4：Above-mentioned siccative is put into electric heating roller kilns into 280 DEG C to process 1 hour, calcining material is obtained；
Step 5：Crushed during calcining material is added into eddy mill, cross 80 mesh sieves, nano silver antimicrobials are obtained.
Embodiment two
A kind of nano silver antimicrobials, are made up of the raw material of following weight portion：
The preparation method of above-mentioned nano silver antimicrobials, comprises the following steps：
Step 1：Silver nitrate is well mixed with 70 parts of water, prepares silver nitrate aqueous solution；NaOH and 30 parts of water mixing, system
Standby sodium hydrate aqueous solution；
Step 2：By in titanium dioxide addition epicyclic mixer, silver nitrate aqueous solution is subsequently adding, mixed to uniform, add hydrogen
Aqueous solution of sodium oxide, mixes to uniform, and wet feed is obtained；
Step 3：It is 1.6wt%, system wet feed to be put into box electrically heated drying cabinet and dries 105 DEG C of dryings to free water content
Obtain siccative；
Step 4：Above-mentioned siccative is put into electric heating roller kilns into 290 DEG C to process 3 hours, calcining material is obtained；
Step 5：Crushed during calcining material is added into eddy mill, cross 80 mesh sieves, nano silver antimicrobials are obtained.
Embodiment three
A kind of nano silver antimicrobials, are made up of the raw material of following weight portion：
The preparation method of above-mentioned nano silver antimicrobials, comprises the following steps：
Step 1：Silver nitrate is well mixed with 70 parts of water, prepares silver nitrate aqueous solution；NaOH and 40 parts of water mixing, system
Standby sodium hydrate aqueous solution；
Step 2：By in titanium dioxide addition epicyclic mixer, silver nitrate aqueous solution is subsequently adding, mixed to uniform, add hydrogen
Aqueous solution of sodium oxide, mixes to uniform, and wet feed is obtained；
Step 3：It is 1.3wt%, system wet feed to be put into box electrically heated drying cabinet and dries 105 DEG C of dryings to free water content
Obtain siccative；
Step 4：Above-mentioned siccative is put into electric heating roller kilns into 300 DEG C to process 4 hours, calcining material is obtained；
Step 5：Crushed during calcining material is added into eddy mill, cross 80 mesh sieves, nano silver antimicrobials are obtained.
Example IV
A kind of nano silver antimicrobials, are made up of the raw material of following weight portion：
The preparation method of above-mentioned nano silver antimicrobials, comprises the following steps：
Step 1：Silver nitrate is well mixed with 80 parts of water, prepares silver nitrate aqueous solution；NaOH and 40 parts of water mixing, system
Standby sodium hydrate aqueous solution；
Step 2：By in titanium dioxide addition epicyclic mixer, silver nitrate aqueous solution is subsequently adding, mixed to uniform, add hydrogen
Aqueous solution of sodium oxide, mixes to uniform, and wet feed is obtained；
Step 3：It is 1.5wt%, system wet feed to be put into box electrically heated drying cabinet and dries 105 DEG C of dryings to free water content
Obtain siccative；
Step 4：Above-mentioned siccative is put into electric heating roller kilns into 300 DEG C to process 1.5 hours, calcining material is obtained；
Step 5：Crushed during calcining material is added into eddy mill, cross 80 mesh sieves, nano silver antimicrobials are obtained.
Comparative example one
A kind of nano silver antimicrobials, are made up of the raw material of following weight portion：
The preparation method of above-mentioned nano silver antimicrobials, with reference to the preparation method of nano silver antimicrobials in embodiment three.
Comparative example two
A kind of nano silver antimicrobials, are made up of the raw material of following weight portion：
The dye preparation method of above-mentioned nano silver antimicrobials, with reference to the pollution-free preparation of nano silver antimicrobials in embodiment three
Method.
Comparative example three
A kind of nano silver antimicrobials, are made up of the raw material of following weight portion：
1.4 parts of silver nitrate
110 parts of titanium dioxide
100 parts of water.
The preparation method of above-mentioned nano silver antimicrobials, comprises the following steps：
Step 1：Silver nitrate is well mixed with 80 parts of water, prepares silver nitrate aqueous solution；
Step 2：By in titanium dioxide addition epicyclic mixer, silver nitrate aqueous solution is subsequently adding, mixed to uniform, be obtained wet
Material；
Step 3：It is 1.5wt%, system wet feed to be put into box electrically heated drying cabinet and dries 105 DEG C of dryings to free water content
Obtain siccative；
Step 4：Above-mentioned siccative is put into electric heating roller kilns into 300 DEG C to process 1.5 hours, calcining material is obtained；
Step 5：Crushed during calcining material is added into eddy mill, cross 80 mesh sieves, nano silver antimicrobials are obtained.
Nano silver antimicrobials prepared by above-described embodiment and comparative example are added with 1.5wt% in coating, it is tested to black
The bacteriostasis rate of Aspergillus, aspergillus terreus, measurement result is shown in Table 1.
Table 1
As seen from the above table, the bacteriostasis rate of nano silver antimicrobials prepared by the present invention is up to 97.5%.When the hydroxide for adding
The amount of sodium is not that when just being reacted completely with silver nitrate, the NaOH for no matter adding is many (comparative examples two) or few (contrast
Example one), its nano silver antimicrobials for being below just reacting preparation to black-koji mould, aspergillus terreus bacteriostasis rate.
Bacteriostasis rate is poor in comparative example one, it may be possible to because the silver nitrate not reacted with NaOH is at 280 DEG C~300 DEG C
Under conditions of can not decompose generation Nano Silver, and make in the form of silver nitrate load on the titanium dioxide so that nanometer silver antimicrobial
The reduction of agent bacteriostasis rate.
It is probably because unreacted NaOH is final with carbon in subsequent processes that bacteriostasis rate is low in comparative example two
The form of sour sodium is present in catalyst system, to a certain extent covering part activated centre, reduces nano silver antimicrobials
Bacteriostasis rate.
When NaOH (comparative example three) is added without in system, the bacteriostasis rate pole of the antiseptic prepared under the same terms
Low, this is probably not resolve into silver-colored simple substance due to silver nitrate, causes its bacteriostasis rate relatively low.
On the other hand, the amount of the NaOH that nano silver antimicrobials of the present invention are added in preparation process can with silver nitrate
Just react completely, will not produce causes to produce nitrogen dioxide during subsequent calcination because silver nitrate does not react completely, also not
Can produce because NaOH is equipment corrosion caused by reacting completely.The present invention realizes the pollution-free system of nano silver antimicrobials
Preparation Method, the raw material sources taken in preparation process are convenient, with low cost.
The invention provides a kind of economic and practical nano silver antimicrobials, it is convenient to add the inner wall decoration material such as diatom ooze
In material, indoors under environment, with excellent antibacterial and mouldproof performance.The antiseptic is harmless to humans and animals, with broad-spectrum sterilization,
Long acting antibiotic, the characteristic such as do not develop immunity to drugs.And it is preparation process is simple, pollution-free, it is with low cost, be easy to industrialization and promote should
With, be conducive to create environmental health human settlement.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made, these improvements and modifications
Should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of nano silver antimicrobials, it is characterised in that be made up of the raw material of following weight portion：
2. nano silver antimicrobials according to claim 1, it is characterised in that be made up of the raw material of following weight portion：
3. nano silver antimicrobials according to claim 1 and 2, it is characterised in that the mass content of the silver nitrate is not small
In 99%.
4. nano silver antimicrobials according to claim 1 and 2, it is characterised in that the titanium dioxide is anatase titanium dioxide titanium dioxide
Titanium, the titanium dioxide particle diameter is 100nm-500nm.
5. nano silver antimicrobials according to claim 1 and 2, it is characterised in that the NaOH and the silver nitrate
Just react completely.
6. the preparation method of any described nano silver antimicrobials of claim 1-5, it is characterised in that comprise the following steps：
Step 1：Prepare silver nitrate aqueous solution and sodium hydrate aqueous solution；
Step 2：By in titanium dioxide addition epicyclic mixer, silver nitrate aqueous solution is subsequently adding, mixed to uniform, add hydroxide
Sodium water solution, mixes to uniform, and wet feed is obtained；
Step 3：Above-mentioned wet feed is put into dried process in box electrically heated drying cabinet, siccative is obtained；
Step 4：Above-mentioned siccative is put into calcination processing in electric heating roller kilns, calcining material is obtained；
Step 5：Crushed during above-mentioned calcining material is added into eddy mill, sieving obtains final product nano silver antimicrobials.
7. the preparation method of nano silver antimicrobials according to claim 6, it is characterised in that in the step 3, it is described dry
Dry treatment is less than 2wt% for 105 DEG C of dryings to free water content.
8. the preparation method of nano silver antimicrobials according to claim 6, it is characterised in that described to forge in the step 4
Burning was processed as 280 DEG C of -300 DEG C of process times no less than 1 hour.
9. the preparation method of nano silver antimicrobials according to claim 6, it is characterised in that in the step 5, the sieve
Mesh number be 80 mesh.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111359579A (en) * | 2020-03-31 | 2020-07-03 | 张雨璨 | Preparation method of antibacterial diatomite wall material |
| CN114369304A (en) * | 2021-12-17 | 2022-04-19 | 毅达（北京）医疗科技有限公司 | Medical antibacterial breathing machine pipeline material and preparation method thereof |
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| CN102822260A (en) * | 2010-01-27 | 2012-12-12 | 伊格内茨格·莫希齐茨基亚格教授工业化工研究院 | Method of manufacturing the silica nanopowders with biocidal properties, especially for polymer composites |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111359579A (en) * | 2020-03-31 | 2020-07-03 | 张雨璨 | Preparation method of antibacterial diatomite wall material |
| CN114369304A (en) * | 2021-12-17 | 2022-04-19 | 毅达（北京）医疗科技有限公司 | Medical antibacterial breathing machine pipeline material and preparation method thereof |
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