CN110214791B - Sterilizing particles superposed with silver quantum dots and preparation method thereof - Google Patents
Sterilizing particles superposed with silver quantum dots and preparation method thereof Download PDFInfo
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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
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/12—Powders or granules
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/17—Metallic particles coated with metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/24—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
- C25D11/08—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing inorganic acids
Abstract
The invention belongs to the technical field of sterilization particles of silver quantum dots, and particularly relates to a sterilization particle superposed with silver quantum dots and a preparation method thereof. The bactericidal particles with superposed silver quantum dots comprise conductive particles and silver quantum dots, wherein a porous oxide film is formed on the surface of the conductive particles, the bactericidal silver quantum dots are superposed in the porous oxide film, the conductive particles are used as anodes and put into an acid electrolytic tank for oxidation reaction, and the oxidized conductive particles are used as cathodes and immersed into an aqueous solution containing silver nitrate, organic hydroxycarboxylic acid and glyphosate for superposition reaction, so that the silver quantum dots are electrolytically superposed in pore channels of the porous oxide film, and the bactericidal particles are prepared.
Description
Technical Field
The invention belongs to the technical field of sterilization particles of silver quantum dots, and particularly relates to a sterilization particle superposed with silver quantum dots and a preparation method thereof.
Background
Along with the improvement of living standard, people pay more attention to health problems, in particular to health hidden dangers brought by food safety, wherein the drinking water safety hidden dangers are always concerned by common people, and in drinking water pollution, various pathogenic bacteria can cause potential harm to human bodies. In recent years, the collective poisoning accident caused by the bacterial infection of escherichia coli and the like which frequently occurs at home and abroad causes a great fear anxiety to people and huge economic loss. People think of a plurality of methods to enable the water drunk by life to be cleaner and healthier, and various types of drinking water filtering equipment appear, which have the advantages of each and different defects. Some of the water cannot completely filter bacteria, viruses and impurities in tap water, and some of the water can filter impurities in the tap water, but filter beneficial mineral substances in the water at the same time, so that the safety of drinking water is difficult to ensure.
The invention discloses a quantum energy filter element device, which comprises two adjusting mechanisms, a cleaning mechanism and a functional mechanism, wherein the two adjusting mechanisms are symmetrically arranged at the upper end and the lower end of the cleaning mechanism, each adjusting mechanism comprises a shell, a sleeve, a connecting plate, a nano filter screen and a water pipe joint, the functional mechanism is arranged in the cleaning mechanism, the cleaning mechanism comprises a sliding rod, a worm, a moving ring, a servo motor, a worm wheel and an annular cleaning block, the two adjusting mechanisms are symmetrically arranged at the upper end and the lower end of the functional mechanism, and the functional mechanism comprises silver ion activated carbon particles, quantum electrowinning stones, quantum alkaline medical stones, quantum high-calcium diatom porcelains and a tank body, and the quantum energy filter element device has the following beneficial effects: can realize clean function, also can adjust the joint position, the installation of being convenient for increases application range, improves life, improves the activity of water, but quantum energy filter core device structure is complicated, and the antibiotic performance of the granule that just disinfects does not have the persistence.
The patent No. CN201120096058.2 discloses an integrated front-middle-mounted antibacterial and scale-inhibiting water purifier, wherein the top of a closed container is provided with a water inlet and a back flush sewage outlet, the left side surface of the container below a filter plate is provided with a back flush water inlet, the right side of the lower part of an antibacterial and scale-inhibiting purification barrel on the right side surface of a tank body is provided with a water outlet, the bottom of the antibacterial and scale-inhibiting purification barrel is provided with a positive flush sewage outlet, the closed container is internally provided with an annular filter plate, water seepage holes are distributed on the filter plate, the surface of the filter plate is sequentially provided with a spun yarn filter, a granular activated carbon filter layer, a multifunctional composite filter material filter layer, a first laser hole filter sheet and a pebble filter layer from bottom to top, a feed inlet at the upper part of the antibacterial and scale-inhibiting purification barrel on the right side surface of the tank body is provided with a sealing cover, a silicon crystal layer and a second laser hole filter sheet are arranged in the antibacterial and scale-inhibiting purification barrel, and a built-in guiding hole is arranged at the joint of the tank body and the antibacterial and scale-inhibiting purification barrel; the water outlet of the filtering device is communicated with the water inlet of the overhead water storage tower, but the antibacterial performance of the antibacterial scale-inhibiting water purifier is not durable.
Disclosure of Invention
In order to solve the problems that the drinking water filtering equipment cannot thoroughly filter bacteria, viruses and impurities in water, the antibacterial performance of the sterilizing particles is not durable, the safety of water quality is difficult to ensure and the like, the invention provides the sterilizing particles superposed with the silver quantum dots and the preparation method thereof.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: the bactericidal particles superposed with the silver quantum dots comprise conductive particles and the silver quantum dots, wherein a porous oxide film is formed on the surface of the conductive particles, and the number of pore channel unit cells on a unit area in the porous oxide film is 20-30 multiplied by 107/cm2The parameters of the pore channels in the unit cells are as follows: the depth of the hole is 3-30 mu m, and the aperture is5-50 μm, and bactericidal silver quantum dots with particle size of 1-20nm are superposed in the porous oxide film layer.
Further, the conductive particles comprise one or more particles in a hollow structure and a solid structure which are made of aluminum or aluminum alloy.
A preparation method of bactericidal particles superposed with silver quantum dots comprises the following steps of
Preparing conductive particles, and putting the conductive particles into an acid electrolytic tank to be used as an anode for oxidation reaction;
and immersing the oxidized conductive particles serving as cathodes into a quantum silver electrolytic solution to carry out superposition reaction, wherein the quantum silver electrolytic solution contains silver nitrate, organic hydroxycarboxylic acid and glyphosate, so as to prepare the silver quantum dot superposed bactericidal particles.
Further, the conductive particles are prepared by one or more of stamping, casting, chiseling and etching.
Further, before the conductive particles are placed in the acid electrolytic tank, the conductive particles are connected in series into a conductive base material through a connecting line, and the distance between the conductive particles is 2-10 mm.
Furthermore, the connecting wire is made of an acid-base corrosion resistant conductive wire material, and the conductive wire material comprises one or more of a copper wire and an aluminum wire.
Furthermore, the time of the superposition reaction is not more than 5min, and the ratio of the current density of the reaction to the current density of the oxidation reaction is 1-5: 1.
Further, silver nitrate in the quantum silver electrolytic solution: organic hydroxycarboxylic acids: the mass ratio of the glyphosate is 10-20:5-15: 1.
Further, the acid electrolytic bath contains one or more of 180-200g/L sulfuric acid solution, 2-8g/L aluminum chloride solution and 0.5-1.0g/L zinc oxide solution.
Further, the method also comprises the step of carrying out surface pretreatment on the conductive particles before the oxidation reaction, wherein the surface pretreatment comprises one or more modes of acid oil removal, water washing and alkali washing.
The invention provides a bactericidal particle superposed with silver quantum dots, which comprises conductive particles and silver quantum dots, wherein a porous oxide film is formed on the surface of the conductive particles, the bactericidal silver quantum dots are superposed in the porous oxide film, the conductive particles are placed in an acid electrolytic tank for anodic oxidation reaction, and the oxidized conductive particles are used as cathodes and immersed in an aqueous solution containing silver nitrate, organic hydroxycarboxylic acid and glyphosate for superposition reaction, so that the silver quantum dots are electrolytically superposed in pore channels of the porous oxide film to prepare the bactericidal particle.
Drawings
FIG. 1 is a schematic structural diagram of the surface of a sterilization particle;
FIG. 2 is a schematic view of a series structure of solid sterilization particles according to the second embodiment;
FIG. 3 is a schematic view of a series structure of three hollow sterilization particles according to an embodiment.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
As shown in fig. 1, the silver quantum dot superposed sterilization particles include silver quantum dots 12 and conductive particles 1, the conductive particles are made of aluminum or aluminum alloy, a porous alumina film 11 is formed on the surface of the conductive particles 1, the sterilization silver quantum dots 12 are superposed in the porous alumina film, and the number of pore unit cells in the porous alumina film per unit area is 20-30 × 107/cm2The parameters of the pore channels in the unit cells are as follows: the depth of the hole is 3-30 μm, the aperture is 5-50 μm, and the grain diameter of the silver quantum dot is 1-100 nm.
The structure of the conductive particles 1 comprises a single-sided body or a polyhedron, and particle bodies of various specifications are manufactured according to the requirement; the mono-hedral particles include spherical particles, elliptical particles, and the like; the polyhedral particles include cylindrical particles, rectangular particles, conical particles, hexahedral particles, and the like.
Example one
As shown in fig. 1, a preparation method of bactericidal particles superposed with silver quantum dots,
s1: preparing conductive particles 1;
obtaining conductive particles by adopting a casting chiseling process;
s2: performing surface pretreatment on the prepared conductive particles, wherein the surface pretreatment comprises acid oil removal, water washing and alkali washing;
the surface pretreatment is to put the conductive particles into an acid oil removal tank of sulfuric acid solution for cleaning, then to clean with water, to clean with sodium hydroxide solution, and finally to clean with water, so as to facilitate the oxidation reaction of the conductive particles;
s3: putting the surface-treated conductive particles into an acid electrolytic tank to be used as an anode for oxidation reaction;
the acid electrolytic bath contains 180g/L sulfuric acid, 2g/L aluminum chloride, 0.5g/L zinc oxide and other solutions; the current density in the oxidation reaction is 5 ADS;
s4: immersing the oxidized conductive particles serving as cathodes into an aqueous solution containing silver nitrate, organic hydroxycarboxylic acid and glyphosate for superposition reaction to prepare bactericidal particles superposed with silver quantum dots;
the time of the superposition reaction is 3min, the current density in the superposition reaction is 15ADS, 10g/L of silver nitrate, 5g/L of organic hydroxy carboxylic acid glycine and 1g/L of glyphosate are contained in the aqueous solution.
S5: the prepared sterilization particles are subjected to cleaning and hole sealing reaction, and attachments remained on the surfaces of the sterilization particles are cleaned, so that the sterilization effect is better, and the hole sealing agent of the hole sealing reaction comprises titanium dioxide or iodine and iodine compounds.
Example two
As shown in fig. 2, a preparation method of bactericidal particles superposed with silver quantum dots,
s1: preparing conductive particles 1, and connecting the conductive particles 1 in series into a conductive substrate 3 through a connecting wire 2;
stamping an aluminum wire by using a bead string die to obtain a bead string conductive substrate with a solid structure, wherein the distance between every two beads, namely conductive particles, in the bead string conductive substrate is 5 mm;
s2: performing surface pretreatment on the conductive base materials which are connected in series, wherein the surface pretreatment comprises acid oil removal, water washing and alkali washing;
the surface pretreatment is to put the conductive base material into an acid oil removing groove of sulfuric acid solution for cleaning, then to clean with water, to clean with sodium hydroxide solution, and finally to clean with water, so as to facilitate the oxidation reaction of the conductive base material;
s3: putting the conductive base materials which are connected in series into an acid electrolytic tank to be used as an anode for carrying out oxidation reaction;
the acid electrolytic bath contains 180g/L sulfuric acid, 2g/L aluminum chloride, 0.5g/L zinc oxide and other solutions; the current density in the oxidation reaction is 5 ADS;
s4: immersing the oxidized conductive base material serving as a cathode into an aqueous solution containing silver nitrate, organic hydroxycarboxylic acid and glyphosate for superposition reaction to prepare bactericidal particles superposed with silver quantum dots;
the time of the superposition reaction is 3min, the current density in the superposition reaction is 15ADS, 10g/L of silver nitrate, 5g/L of organic hydroxy carboxylic acid glycine and 1g/L of glyphosate are contained in the aqueous solution.
S5: the prepared sterilization particles are subjected to cleaning and hole sealing reaction, and attachments remained on the surfaces of the sterilization particles are cleaned, so that the sterilization effect is better, and the hole sealing agent of the hole sealing reaction comprises titanium dioxide or iodine and iodine compounds.
EXAMPLE III
As shown in fig. 3, the difference between this embodiment and the second embodiment is that conductive particles 1 are prepared, and the conductive particles 1 are connected in series to form a conductive substrate 3 through a connecting wire 2, that is, round and spherical hollow conductive particles are obtained by casting and chiseling, and round and spherical conductive particles are connected in series to form a conductive substrate through a connecting wire aluminum wire; the conductive particles are arranged on the connecting line aluminum wire at intervals, and the distance is 5 mm.
Example four
The difference between this embodiment and the first embodiment is that 50 μm round and solid conductive particles are obtained by casting and chiseling process, and when the surface treatment of the conductive particles is completed, 200g/L sulfuric acid, 6g/L aluminum chloride, 0.8g/L zinc oxide, etc. are addedCarrying out oxidation reaction in an acid electrolytic tank of the solution, wherein the current density in the oxidation reaction is 8ADS, so that a porous alumina film is formed on the surface of the conductive particles, and the number of the pore unit cells in the porous alumina film per unit area is 20-30 multiplied by 107/cm2The parameters of the pore channels in the unit cells are as follows: the depth of the hole is 25-30 μm, and the aperture is 40-50 μm;
after the conductive particles are oxidized, putting the conductive particles into an aqueous solution containing 25g/L of silver nitrate, 12g/L of organic hydroxycarboxylic acid glycine and 1.5g/L of glyphosate for superposition reaction to obtain bactericidal particles, wherein the superposition reaction time is 4min, and the current density in the superposition reaction is 24ADS, so that bactericidal silver quantum dots are superposed in the porous alumina film layer, and the particle size of the silver quantum dots is 90-100 nm;
and (3) carrying out cleaning and hole sealing reaction on the prepared sterilization particles, and cleaning attachments remained on the surfaces of the sterilization particles, so that the sterilization effect is better, wherein the hole sealing agent for the hole sealing reaction comprises titanium dioxide or iodine and iodine compounds.
The sterilizing particles are cleaned and sealed to form a sewage purifying tank which can be used for sewage sterilization, swimming pool water sterilization and sewage sterilization of waterworks and comprises a tank body, the tank body comprises one or more tanks connected in series or in parallel, the tank body is filled with sterilization particles, the upper end and the lower end of the tank body are respectively provided with a water inlet and a water outlet, the sewage of the swimming pool enters the tank body from a clean water port, the water flows out from the water outlet after being purified by the sterilization particles in the tank body, and also comprises a booster pump, the water inlet of the tank body is arranged below the tank body, the water outlet is arranged above the tank body, the booster pump is arranged on a water inlet pipeline, sewage enters from the bottom of the tank body, flows out from the upper part of the tank body after being boosted, the flow rate of the sewage is controlled by adjusting the pressure of the booster pump, so that the treatment time of the sewage in the tank body can be controlled, and the sterilization effect is ensured;
and (3) testing the performance of the sterilizing particles: as shown in the following table 1-1, it can be known that the bactericidal particles have an obvious bactericidal effect by detecting the concentration of each bacterium (average viable bacteria concentration of a positive control sample) in the sewage purification tank without the bactericidal particles and the concentration of each bacterium (average viable bacteria concentration of a test sample) in the sewage purification tank with the bactericidal particles, so that the bactericidal effect is ensured in the use state of a waterway with a large flow and a waterway with a large pollution, and the safety of water quality is ensured.
TABLE 1-1
EXAMPLE five
The difference between the present embodiment and the second embodiment is that a bead string mold is used to punch an aluminum wire to obtain a 25 μm hollow bead string conductive substrate, the distance between every two beads, i.e., conductive particles, in the bead string conductive substrate is 1mm, when the surface treatment of the conductive substrate is completed, the conductive substrate is placed into an acid electrolytic tank containing solutions of 180g/L sulfuric acid, 4g/L aluminum chloride, 0.6g/L zinc oxide, etc. to perform an oxidation reaction, the current density in the oxidation reaction is 5ADS, so that a porous alumina film is formed on the surface of the conductive particles, and the number of the pore unit cells per unit area in the porous alumina film is 20-30 × 107/cm2The parameters of the pore channels in the unit cells are as follows: the depth of the hole is 20-25 μm, and the aperture is 40-45 μm;
after the conductive base material is oxidized, putting the conductive base material into an aqueous solution containing 15g/L of silver nitrate, 8g/L of organic hydroxy carboxylic glycine and 1g/L of glyphosate for superposition reaction to obtain bactericidal particles, wherein the superposition reaction time is 3min, and the current density in the superposition reaction is 15ADS, so that bactericidal silver quantum dots are superposed in the porous alumina film layer, and the particle size of the silver quantum dots is 80-100 nm;
and (3) carrying out cleaning and hole sealing reaction on the prepared sterilization particles, and cleaning attachments remained on the surfaces of the sterilization particles, so that the sterilization effect is better, wherein the hole sealing agent for the hole sealing reaction comprises titanium dioxide or iodine and iodine compounds.
The aforesaid substrate that disinfects washs, makes the water purifier filter core that disinfects after the hole sealing is accomplished, the water purifier filter core includes casing, the granule that disinfects sets up in the casing, the water purifier filter core includes multistage, including the cotton filter core of PP, granule active carbon filter core and the filter core that disinfects of establishing ties in proper order, it has the above-mentioned granule that disinfects that makes to fill in the casing of filter core to disinfect, through the leading filtration of the cotton filter core of PP, granule active carbon filter core to the running water, firstly can purify water quality, secondly can guarantee that hollow granule that disinfects is difficult to blockked up, and the hollow granule that disinfects is big with the contact surface of water in addition, and bactericidal effect and the speed of disinfecting can be guaranteed, guarantee to realize bactericidal effect in the water purifier casing in less space.
And (3) testing the performance of the sterilizing particles: as shown in the following tables 1-2, the bacteria concentration (average viable bacteria concentration of a positive control sample) of water passing through the filter element of the water purifier without the sterilization particles and the bacteria concentration (average viable bacteria concentration of a test sample) of the sterilization filter element of the water purifier with the sterilization particles are detected, so that the sterilization particles have obvious sterilization effect, and the safety of water quality is ensured.
Tables 1 to 2
EXAMPLE six
The difference between the embodiment and the third embodiment is that spherical conductive particles with a hollow structure of 15 μm are obtained by a casting and chiseling process, the conductive particles are connected in series to form a conductive substrate through a connecting wire and an aluminum wire, the distance between every two beads in the conductive substrate of the bead string, namely the conductive particles, is 0.5mm, when the surface treatment of the conductive substrate is completed, the conductive substrate is put into an acid electrolytic tank containing solutions of 180g/L sulfuric acid, 2g/L aluminum chloride, 0.5g/L zinc oxide and the like for oxidation reaction, the current density in the oxidation reaction is 3.5ADS, so that a porous alumina film is formed on the surface of the conductive particles, and the number of the pore unit cells in unit area in the porous alumina film is 20-30 × 107/cm2The parameters of the pore channels in the unit cells are as follows: the depth of the hole is 15-20 μm, and the aperture is 20-30 μm;
after the conductive base material is oxidized, putting the conductive base material into aqueous solution containing 10g/L of silver nitrate, 5g/L of organic hydroxy carboxylic glycine and 1g/L of glyphosate for superposition reaction to obtain bactericidal particles, wherein the superposition reaction time is 3min, and the current density in the superposition reaction is 15ADS, so that bactericidal silver quantum dots are superposed in the porous alumina film layer, and the particle size of the silver quantum dots is 50-60 nm;
and (3) carrying out cleaning and hole sealing reaction on the prepared sterilization particles, and cleaning attachments remained on the surfaces of the sterilization particles, so that the sterilization effect is better, wherein the hole sealing agent for the hole sealing reaction comprises titanium dioxide or iodine and iodine compounds.
The water purification tap is made after the aforesaid substrate that disinfects washs, hole sealing is accomplished, water purification tap includes tap body, the granule that disinfects, tap body includes the water route, be equipped with on the water route and fill the chamber, it has the granule that disinfects to fill the intracavity packing, the granule that disinfects makes tap difficult for hollow structure to block up, and hollow granule that disinfects has increased the area of contact with water, guarantees that water can obtain effectual bactericidal effect when the tap water route, realizes disinfecting fast in less space and shorter time.
And (3) testing the performance of the sterilizing particles: as shown in tables 1 to 3 below, it can be seen that the bactericidal particles have an obvious bactericidal effect and ensure the safety of water quality by detecting the concentration of each bacterium (average viable bacteria concentration of positive control sample) after water passes through a faucet without bactericidal particles and the concentration of each bacterium (average viable bacteria concentration of test sample) after water passes through a faucet with bactericidal particles.
Tables 1 to 3
The above description is only a preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using the design concept should fall within the scope of infringing on the protection scope of the present invention.
Claims (4)
1. A preparation method of sterilization particles superposed with silver quantum dots is characterized by comprising the following steps: the sterilizing particles superposed with the silver quantum dots comprise conductive particles and the silver quantum dots, wherein a porous oxide film is formed on the surface of the conductive particles, and the number of pore channel unit cells on a unit area in the porous oxide film is 20-30 multiplied by 107/cm2The parameters of the pore channels in the unit cells are as follows: the depth of the hole is 3-30 μm, the diameter of the hole is 5-50 mu m, the porous oxide film layer is superposed with bactericidal silver quantum dots, the grain diameter of the silver quantum dots is 1-20nm, the conductive particles comprise one or more particles in a hollow structure and a solid structure which are formed by aluminum or aluminum alloy, the method for preparing the bactericidal particles superposed with the silver quantum dots comprises the following steps,
preparing conductive particles, putting the conductive particles into an acid electrolytic tank to be used as an anode for oxidation reaction, and connecting the conductive particles in series into a conductive base material through a connecting wire before the conductive particles are put into the acid electrolytic tank, wherein the distance between the conductive particles is 2-10 mm;
immersing the oxidized conductive particles serving as a cathode into a quantum silver electrolytic solution for superposition reaction, wherein the quantum silver electrolytic solution contains silver nitrate, organic hydroxycarboxylic acid and glyphosate, and the bactericidal particles with superposed silver quantum dots are prepared, the time of the superposition reaction is not more than 5min, the ratio of the current density of the reaction to the current density of the oxidation reaction is 1-5:1, and the ratio of the silver nitrate: organic hydroxycarboxylic acids: the mass ratio of the glyphosate is 10-20:5-15:1, and the acid electrolytic cell contains one or more of 180-200g/L sulfuric acid solution, 2-8g/L aluminum chloride solution and 0.5-1.0g/L zinc oxide solution.
2. The preparation method of the bactericidal particles with superposed silver quantum dots, which is characterized by comprising the following steps: the conductive particles are prepared by one or more of stamping, casting, chiseling and etching.
3. The preparation method of the bactericidal particles with superposed silver quantum dots, which is characterized by comprising the following steps: the connecting wire is made of an acid-base corrosion resistant conductive wire material, and the conductive wire material comprises one or more of a copper wire and an aluminum wire.
4. The preparation method of the bactericidal particles with superposed silver quantum dots, which is characterized by comprising the following steps: the method is characterized in that surface pretreatment is carried out on the conductive particles before the oxidation reaction, wherein the surface pretreatment comprises one or more modes of acid oil removal, water washing and alkali washing.
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| CN107130276A (en) * | 2017-06-26 | 2017-09-05 | 石狮市星火铝制品有限公司 | A kind of antiseptic aluminum and its manufacture method |
| CN207599885U (en) * | 2017-11-13 | 2018-07-10 | 石狮市星火铝制品有限公司 | A kind of air purifier |
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2018
- 2018-10-23 CN CN201811237035.1A patent/CN109329303A/en active Pending
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2019
- 2019-03-15 CN CN201910198269.8A patent/CN110214791B/en active Active
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| CN102824789A (en) * | 2011-06-15 | 2012-12-19 | 苏州波塞顿节能环保工程有限公司 | Ceramic filter core |
| CN103990322A (en) * | 2014-05-28 | 2014-08-20 | 芜湖市华泰实业有限公司 | High-performance ceramic filtering core |
| CN107130276A (en) * | 2017-06-26 | 2017-09-05 | 石狮市星火铝制品有限公司 | A kind of antiseptic aluminum and its manufacture method |
| CN207599885U (en) * | 2017-11-13 | 2018-07-10 | 石狮市星火铝制品有限公司 | A kind of air purifier |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110214791A (en) | 2019-09-10 |
| CN109329303A (en) | 2019-02-15 |
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