CN1726782A - Composite antibiotic material in medical use of active carbon fiber-Nano silver, and prepearation method - Google Patents
Composite antibiotic material in medical use of active carbon fiber-Nano silver, and prepearation method Download PDFInfo
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- CN1726782A CN1726782A CN 200510024952 CN200510024952A CN1726782A CN 1726782 A CN1726782 A CN 1726782A CN 200510024952 CN200510024952 CN 200510024952 CN 200510024952 A CN200510024952 A CN 200510024952A CN 1726782 A CN1726782 A CN 1726782A
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Abstract
A medical antibacterial activated carbon fibre-nanoAg material used as wound dressing is prepared through activating the carbon-contained fibres by gasifying-activating method, immersing them in Ag-contained solution or spraying said solution onto them, and oscillating for embedding the Ag nanoparticles in fibres. Its advantages are high and durable antibacterial action.
Description
Technical field
The invention belongs to technical field of function materials; be specifically related to activated carbon fiber-Nano Silver composite antibiotic material in medical use and preparation method thereof; prepared material plays the effect of protecting wound surface, absorption, sterilization as medical Wound dressing material, and provides special care to that the lesion is medical special procures aseptic protective garment.
Background technology
Existing adsorbent commonly used has activated carbon, silica gel, Emathlite and zeolite molecular sieve etc.But these materials not only adsorption capacity are low, and operating characteristics and regeneration capacity are poor.Therefore, seek more good sorbing material, become the problem that the various countries experts and scholars pay close attention to always.
Activated carbon fiber (Activated Carbon Fiber ACF) is a kind of new carbon with unique adsorption function that grows up after Powdered, granule activated carbon.Early 1960s has been developed activated carbon fiber on the high-performance carbon fibre basis; The seventies in 20th century, activated carbon fiber begins suitability for industrialized production gradually; Obtain extensive studies with its small aperture size, narrow pore-size distribution, big specific surface area and the surperficial performance that contains excellences such as oxygen, nitrogen or other functional group at aspects such as waste water treatment, advanced water treatment, organic solvent recovery, gas purification, big capacity double layer capacity and fuel cells, be considered to the most promising adsorbing separation functional material of new century.But up to now, the application of activated carbon fiber is far below activated carbon, mainly is owing to lack research to aspects such as use form, regeneration and service life, structure and the chemical modification of activated carbon fiber and functionalization.The use form of activated carbon fiber has felt, cloth and paper, has carried out than extensive studies and application aspect active carbon fiber felt and cloth at present, but about the research and the application of activated carbon fiber-Nano Silver composite antibiotic material in medical use, has been seen in the few of report.
Activated carbon fiber is a member that has special performance in the porous carbon family, and it is big to have specific surface area, and micropore is abundant, and pore-size distribution is narrow, and absorption, desorption rate are fast, in light weight, easily advantage such as regeneration.The precursor of activated carbon fiber is carbon fiber or all kinds of pre-oxidized fibers, and its main component is a material with carbon element.Activated carbon fiber preparation commonly used is the difference of activation method by activator, is divided into two kinds of gas activation method and chemical reagent activation methods.The gas activation method is an oxide isolation with water vapour, carbonic acid gas or micro-air, makes disordered carbon partial oxidation etching pore-forming in the material with carbon element, and it is many that this method is used, research also comparatively clear; The chemical reagent activation method is soaked material with carbon element with chemical agent, in the heat-activated process, carbon is wherein overflowed with little molecular forms such as carbon monoxide, carbonic acid gas, the common chemical medicament has ZnCl2, KOH etc., because so the activated carbon fiber unstable properties that this method produces is less use.
The application development of nanometer technology in functional fibre is very fast, and the function of the fiber of nanometer technology exploitation relates to far infrared, ultraviolet barrier, radioresistance, antibacterial and deodorizing, anion, antistatic, conduction, anti-aging, water and oil repellant etc.The function that the chemical fibre of sneaking into nano-ZnO and nanometer SiO2 of Japan Supreme Being people company exploitation has deodorizing and purifies air, this fiber is used to the smelly dressing of disappearing of long-term bed patient and hospital, bandage, nightwear etc.; Japan Cangfu company adds nano-ZnO in the polyester fiber, has made ultraviolet prevention fiber, and that this fiber also has is antibiotic, the function of sterilization, deodorization; Equally, metal nanoparticle added in the chemical fibre can play antistatic property, so the application of nanometer technology in nontoxic the fiber research purpose pursued of medical field researcher, little such report at present especially.
Summary of the invention
The objective of the invention is to obtain the activated carbon fiber that a kind of preparation method is simple, cost is low, performance is good-Nano Silver composite antibiotic material in medical use.
Activated carbon fiber-Nano Silver composite antibiotic material in medical use that the present invention proposes, activated carbon fiber is adsorbed with nano-Ag particles, and its content is the 200-400mg/pg carbon fiber.
Among the present invention, the Ag grain diameter is 2-50nm.
The present invention adopts gasification to prepare activated carbon fiber-Nano Silver composite antibiotic material in medical use in conjunction with activation method, weaving and mosaic technology, and this material can be used for medical Wound dressing, and provides special care to lesion medical protective garment etc.
Being prepared as follows of compound of the present invention:
(1) preparation of activated carbon fiber
Former studies shows, though raw fibre kind difference, the actual conditions of preparation activated carbon fiber has nothing in common with each other, and its typical process flow includes preliminary treatment, carbonization and three key links of activation.Preliminary treatment mainly comprises electrolyte solution dipping and pre-oxidation etc., when being the feedstock production activated carbon fiber with native fiber, also needs removal of impurities.Carburizing temperature generally is controlled at 200～400 ℃; Activation temperature is 800～1200 ℃.As shown in Figure 2.
Traditional chemical reagent activation method is with KOH aqueous solution soaking precursor fiber, pull oven dry out after, place activation furnace; heat up under nitrogen protection and heat, owing to contain compositions such as hydrogen, oxygen in the fiber, reaction is fierce; wayward, so the properties of sample instability that makes.
Among the present invention; gasification is heated carbonization in conjunction with activation method for earlier the precursor carbon fiber-containing being put into the heating furnace secluding air; make carbon fiber, place the carbon fiber that makes the alkaline aqueous solution of 10-40wt% to soak 8-16 hour then, after the taking-up; place in the activation furnace; be warming up to 700-850 ℃ with 5-20 ℃/minute programming rate under nitrogen protection, after constant temperature 20-60 divided, cooling was taken out under nitrogen protection; the washing oven dry obtains activated carbon fiber.
(2) activated carbon fiber is through the nano-antibacterial treatment technology
According to the initial concentration difference of argentiferous in preparation method and the solution, reduction is adsorbed on the particle diameter difference of the silver particles on the fiber surface.The micropore of activated carbon fiber is abundant, and degree of graphitization is low, and the silver granuel of reduction absorption is thinner relatively; If the degree of graphitization height, surface chemical reaction is strong, and then the silver granuel of reduction absorption is thicker relatively.Therefore, by adjusting the silver concentration of fiber preparation method and solution, the silver particles that controlled reduction absorption embeds fibrous inside is nanometer particle substantially.
Among the present invention, configuration concentration is that 2-3g/L contains silver ion solution, immerses above-mentioned activated carbon fiber, after the gained material was vibrated 20-26 hour in water-bath, and elimination solution, the fiber distilled water flushing, dry then.
Among the present invention, prepared materials processing becomes fabric.
Above-mentioned Ag-containing solution such as AgNO
3Solution, silver-colored ammonium salt solution etc.
Among the present invention, containing the liquid-solid ratio that immerses activated carbon fiber in the silver ion solution is (80-100): 1.
Among the present invention, Ag-containing solution also can be sprayed onto on the activated carbon fiber.
Among the present invention, the material that is processed into fabric is adhesively fixed in the middle of hospital gauze.
Among the present invention, will in the material that is processed into fabric, add antibiotic.
Filtrate is used the residual concentration of aas determination silver.Activated carbon fiber behind the above-mentioned absorbing and reducing silver ion is observed the configuration of surface of activated carbon fiber or the distribution of Nano Silver on the JSM26330F of company of NEC field emission scanning electron microscope behind the vacuum metallizing film.
The principle that activated carbon fiber is handled through nano-antibacterial is that nano silver particles is embedded fibrous inside by reduction absorption, when compound contacts with microorganism, an amount of nanometer silver granuel arrives the microbial cell film, rely on Coulomb attraction, the two firmly adsorbs, and the penetration cell wall enters in the cell, makes protein coagulating, destroy the vigor of cell synzyme, make cell forfeiture division growth ability and death.When cell lost activity, silver granuel can therefrom dissociate out again, repeats fungicidal property, so its antibacterial action is lasting.Simultaneously, nanoparticle is embedded into fibrous inside, rather than is adsorbed on fiber surface, therefore can stand lasting washing.
The present invention is processed into the atomic granule of average grain diameter about 2-50nm with the natural materials argent with the modern high technology nanometer technology.Nano Silver, in the antibiotic effect of performance silver, because particle is atomic little, surface area is bigger, has superpower activity and stronger tissue permeability, and its bactericidal action is hundreds of times of common silver.In research, trial-manufacturing process,, its curative effect and toxic and side effect have been carried out feasibility study, and made animal experiment according to the relevant requirements of the Ministry of Public Health.Its result proves, can suppress the bacterial growth of wound location, impels wound healing.Animal experiment observe to be used the curative effect of changing dressings apparently higher than the curative effect of changing dressings of flamazine, and it is easy to use, without any side effects, spread effect and sensitization.Make various curable products as raw material with strong antimicrbial power, bacterium, fungus-caused diseases such as treatment burn and scald, wound, infection, suppuration, acne, skin disease, gynecological disease can be widely used in, and antibiotic long-acting broad-spectrum antibacterial effect can be realized really not containing.Its nontoxic, tasteless, non-stimulated, no allergy, and can not cause drug-resistance of bacteria, be pure green medical antibacterial product.
The prepared materials processing of the present invention becomes form of fabric to make " simple form " activated carbon fiber-Nano Silver composite antibiotic material in medical use; Perhaps press from both sides between the two-layer gauze, bonding, fixing, form " sandwich type " activated carbon fiber-Nano Silver composite antibiotic material in medical use; Perhaps add at the antibiotic of special bacterial classification and make " special efficacy type " activated carbon fiber-Nano Silver composite antibiotic material in medical use.The inventive method is easy, and cost is low, and performance is good, has good medical applications prospect.
Description of drawings
Fig. 1 embeds the architectural feature figure of the active-carbon fibre material of Nano Silver.
Fig. 2 is the typical process flow of preparation carbon fiber.
Embodiment
The preparation process of activated carbon fiber-Nano Silver composite antibiotic material in medical use is as follows:
(1) earlier the precursor carbon fiber-containing is put into heating furnace secluding air heating carbonization; compositions such as wherein hydrogen, oxygen, nitrogen are broken away from overflows; make carbon fiber; place the carbon fiber that makes the KOH aqueous solution of 35wt% to soak 16 hours then; after the taking-up; oven dry is weighed; place in the activation furnace flat-temperature zone; programming rate with 5-20 ℃/min is warming up to predetermined temperature (700 ℃) under nitrogen protection, the constant temperature certain hour is after 20 minutes, and cooling is weighed after taking out under nitrogen protection; washing oven dry repeatedly; weigh again, calculate the fiber yield, measure specific surface area.
(2) get the AgNO of the 2g/L for preparing
3Ag-containing solution is in tool plug conical flask, activated carbon fiber was immersed the Ag solion 0.5 hour (through 110 ℃ of vacuum dryings, constant weight), or Ag-containing solution placed the particulate sprinkler, make it evenly be sprayed at the activated carbon fiber surface, carrying silver-colored activated carbon fiber afterwards vibrates in 35 ℃ of water-baths behind the 24h, elimination solution, fiber washes repeatedly with distilled water.Filtrate is used the residual concentration of aas determination silver.Activated carbon fiber behind the above-mentioned absorbing and reducing silver ion is observed the configuration of surface of activated carbon fiber or the distribution of Nano Silver on the JSM26330F of company of NEC field emission scanning electron microscope behind the vacuum metallizing film.
(3) become form of fabric to make " simple form " activated carbon fiber-Nano Silver composite antibiotic material in medical use the prepared materials processing of step (2); Perhaps press from both sides between the two-layer gauze, bonding, fixing, form " sandwich type " activated carbon fiber-Nano Silver composite antibiotic material in medical use; Perhaps add at the antibiotic of special bacterial classification and make " special efficacy type " activated carbon fiber-Nano Silver composite antibiotic material in medical use.
(4) make according to prior art processes and contain antibiotic tradition Wound dressing, simple carbon fibre material, mesopore activity carbon and carry ag material, wait until test relatively.
Embodiment 2
The preparation method is with embodiment 1, just carbon fiber placed the NaOH aqueous solution of 10wt% to soak 8 hours, then 820 ℃ of following constant temperature 50 minutes, and cooling under nitrogen protection, washing, oven dry; The silver-colored ammonium that activated carbon fiber immerses 3g/L contained silver ion solution after 3 hours, after in 45 ℃ of water-baths, vibrating 20 hours, and elimination solution, fiber gets final product with distilled water flushing.
(1) earlier the precursor carbon fiber-containing is put into heating furnace secluding air heating carbonization; compositions such as wherein hydrogen, oxygen, nitrogen are broken away from overflows; make carbon fiber; place the carbon fiber that makes the KOH aqueous solution of 15wt% to soak 16 hours then; after the taking-up; oven dry is weighed; place in the activation furnace flat-temperature zone; programming rate with 5-20 ℃/min is warming up to predetermined temperature (700 ℃) under nitrogen protection, the constant temperature certain hour is after 20 minutes, and cooling is weighed after taking out under nitrogen protection; washing oven dry repeatedly; weigh again, calculate the fiber yield, measure specific surface area.
Embodiment 3
Relatively containing antibiotic tradition Wound dressing, simple carbon fibre material, mesopore activity carbon carries ag material, the activated carbon fiber-Nano Silver composite antibiotic material in medical use animal that is applied to burn and oozes out the infective wound surface result of the test.
Result of the test is as follows:
(1) anti-microbial property of antibiotic and Nano Silver relatively
Project antibiotic Nano Silver
The antimicrobial spectrum antimicrobial spectrum is different because of antibiotic, and has a broad antifungal spectrum is not limited by the classification of bacterium
Usually can only be to several bacteriums of minority
Antibacterial action is arranged.
Drug resistance easily produces antibody-resistant bacterium.Can not produce drug resistance
Drug-fast bacteria is invalid, exists between the antibiotic to intersect to have identical bactericidal action
Tolerance.
Use is calculated with mg and is calculated with μ g
Dosage
Antibiotic sterilization process of safety and internal metabolism are tried during with thousand times of routine clinical amount
Process, can be to the damage that causes of body internal organs, animal is without any the reflection of poisoning.
Need control to use.
(2) relatively, anti-microbial property (timeliness, kill bacterial classification quantity): activated carbon fiber-Nano Silver composite antibiotic material in medical use＞mesopore activity carbon carries ag material＞contain antibiotic tradition Wound dressing＞simple carbon fibre material for the prepared antibiotic material in medical use animal experiment of different materials.Absorption property (liquid, macromolecular substances): simple carbon fibre material＞activated carbon fiber-Nano Silver composite antibiotic material in medical use＞mesopore activity carbon carries ag material＞contain antibiotic tradition Wound dressing.Combination property considers that activated carbon fiber-Nano Silver composite antibiotic material in medical use is good.
Claims (9)
1, activated carbon fiber-Nano Silver composite antibiotic material in medical use is characterized in that activated carbon fiber is adsorbed with nano-Ag particles, and its content is the 200-400mg/pg carbon fiber.
2, anti-biotic material as claimed in claim 1 is characterized in that the Ag grain diameter is 2-50nm.
3, the preparation method of activated carbon fiber as claimed in claim 1-Nano Silver composite antibiotic material in medical use is characterized in that:
(1) gasification is heated carbonization in conjunction with activation method for earlier the precursor carbon fiber-containing being put into the heating furnace secluding air, make carbon fiber, place the carbon fiber that makes the alkaline aqueous solution of 10-40wt% to soak 8-16 hour then, after the taking-up, place in the activation furnace, under nitrogen protection, be warming up to 700-850 ℃, after constant temperature 20-60 divides with 5-20 ℃/minute programming rate, cooling is taken out under nitrogen protection, the washing oven dry;
(2) configuration concentration is that 2-3g/L contains silver ion solution, immerses above-mentioned NACF, after the gained material was vibrated 20-26 hour in water-bath, and elimination solution, the fiber distilled water flushing, dry then;
(3) the prepared materials processing of step (2) is become fabric.
4, preparation method as claimed in claim 3 is characterized in that the liquid-solid ratio of immersion activated carbon fiber in containing silver ion solution is (80-100): 1.
5, preparation method as claimed in claim 3 is characterized in that Ag-containing solution is sprayed onto on the activated carbon fiber.
6, preparation method as claimed in claim 3 is characterized in that the material that will be processed into fabric is adhesively fixed in the middle of hospital gauze.
7, preparation method as claimed in claim 3 is characterized in that and will add antibiotic in the material that is processed into fabric.
8, as of the application of right 1,2 described activated carbon fiber-Nano Silver composite antibiotic material in medical use as antibiotic material in medical use.
9, as of the application of right 1,2 or 3 described activated carbon fiber-Nano Silver composite antibiotic material in medical use as medical dressing or medical protective garment.
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| CN 200510024952 CN1726782A (en) | 2005-04-07 | 2005-04-07 | Composite antibiotic material in medical use of active carbon fiber-Nano silver, and prepearation method |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2432529A (en) * | 2005-11-25 | 2007-05-30 | Univ Feng Chia | Wound dressing and topical antimicrobial composition comprising carbon and noble metal |
| AU2007200085B2 (en) * | 2006-09-19 | 2009-02-05 | Feng Chia University | Antimicrobial compositions and wound dressings |
| CN102133420A (en) * | 2011-03-02 | 2011-07-27 | 长沙海润生物技术有限公司 | Silver ion active carbon antimicrobial dressing and preparation method thereof |
| CN102512703A (en) * | 2012-01-10 | 2012-06-27 | 苏州大学 | Medicinal dressing and preparation method thereof |
| CN102552988A (en) * | 2012-02-16 | 2012-07-11 | 江苏科净炭纤维有限公司 | Method for making female cleaning product by using activated carbon fiber |
| CN102941698A (en) * | 2012-11-26 | 2013-02-27 | 大连创达技术交易市场有限公司 | Composite antimicrobial non-woven fabric plate |
| CN103494672A (en) * | 2013-09-29 | 2014-01-08 | 戎静华 | Medical active carbon fiber dressing |
| CN107281492A (en) * | 2017-08-17 | 2017-10-24 | 柯泽豪 | A kind of purposes of composition |
| CN107456598A (en) * | 2017-05-02 | 2017-12-12 | 中国药科大学 | A kind of preparation method of novel nanometer silver NACF multifunctional medical material |
| CN107672244A (en) * | 2017-09-27 | 2018-02-09 | 江苏华东纺织产品检测有限公司 | A kind of water-fastness wool spinning fabric |
| CN108215379A (en) * | 2017-12-15 | 2018-06-29 | 合肥普尔德医疗用品有限公司 | It is a kind of for inorganic or organic nanocomposite of protective garment and preparation method thereof |
| CN108680560A (en) * | 2018-04-16 | 2018-10-19 | 湖南云天检测技术有限公司 | The assay method of total silver content in a kind of silver-containing antibacterial material |
| CN109267023A (en) * | 2018-08-29 | 2019-01-25 | 江苏理工学院 | A kind of antibacterial active carbon fiber material and preparation method thereof |
| CN109432480A (en) * | 2018-12-05 | 2019-03-08 | 大连大学 | A kind of wet active carbon loading silver fiber dressing of long acting antibiotic control and preparation method thereof |
| CN112012008A (en) * | 2020-07-21 | 2020-12-01 | 苏州远浩新纺织科技有限公司 | Silver-carrying antibacterial activated carbon fiber and preparation method thereof |
| CN112226847A (en) * | 2020-11-09 | 2021-01-15 | 紫灿科技(上海)股份有限公司 | Durable antibacterial mildew-proof fiber and application thereof |
| CN112545073A (en) * | 2020-12-30 | 2021-03-26 | 河南省斯科赛斯科技发展有限公司 | Antibacterial breathable medical protective clothing |
| CN112568522A (en) * | 2020-12-30 | 2021-03-30 | 河南省斯科赛斯科技发展有限公司 | Medical protective facial mask of antibiotic type |
| WO2021142224A1 (en) * | 2020-01-08 | 2021-07-15 | ImMutriX Therapeutics, Inc. | Hemostatic gauze comprising carbon |
| CN115382506A (en) * | 2022-10-26 | 2022-11-25 | 成都天佑晶创科技有限公司 | Zinc-silver-copper loaded active carbon composite material and preparation method and application thereof |
| WO2023006660A1 (en) * | 2021-07-25 | 2023-02-02 | Osmotex Ag | Disinfecting fabric structure |
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2005
- 2005-04-07 CN CN 200510024952 patent/CN1726782A/en active Pending
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2432529A (en) * | 2005-11-25 | 2007-05-30 | Univ Feng Chia | Wound dressing and topical antimicrobial composition comprising carbon and noble metal |
| GB2432529B (en) * | 2005-11-25 | 2008-04-23 | Univ Feng Chia | Antimicrobial compositions and wound dressings |
| AU2007200085B2 (en) * | 2006-09-19 | 2009-02-05 | Feng Chia University | Antimicrobial compositions and wound dressings |
| ES2322218A1 (en) * | 2006-09-19 | 2009-06-17 | Feng Chia University | Antimicrobial composition and wound dressing |
| CN102133420A (en) * | 2011-03-02 | 2011-07-27 | 长沙海润生物技术有限公司 | Silver ion active carbon antimicrobial dressing and preparation method thereof |
| CN102512703A (en) * | 2012-01-10 | 2012-06-27 | 苏州大学 | Medicinal dressing and preparation method thereof |
| CN102552988A (en) * | 2012-02-16 | 2012-07-11 | 江苏科净炭纤维有限公司 | Method for making female cleaning product by using activated carbon fiber |
| CN102941698A (en) * | 2012-11-26 | 2013-02-27 | 大连创达技术交易市场有限公司 | Composite antimicrobial non-woven fabric plate |
| CN103494672A (en) * | 2013-09-29 | 2014-01-08 | 戎静华 | Medical active carbon fiber dressing |
| CN107456598A (en) * | 2017-05-02 | 2017-12-12 | 中国药科大学 | A kind of preparation method of novel nanometer silver NACF multifunctional medical material |
| CN107281492A (en) * | 2017-08-17 | 2017-10-24 | 柯泽豪 | A kind of purposes of composition |
| CN107672244A (en) * | 2017-09-27 | 2018-02-09 | 江苏华东纺织产品检测有限公司 | A kind of water-fastness wool spinning fabric |
| CN108215379A (en) * | 2017-12-15 | 2018-06-29 | 合肥普尔德医疗用品有限公司 | It is a kind of for inorganic or organic nanocomposite of protective garment and preparation method thereof |
| CN108680560A (en) * | 2018-04-16 | 2018-10-19 | 湖南云天检测技术有限公司 | The assay method of total silver content in a kind of silver-containing antibacterial material |
| CN109267023A (en) * | 2018-08-29 | 2019-01-25 | 江苏理工学院 | A kind of antibacterial active carbon fiber material and preparation method thereof |
| CN109432480A (en) * | 2018-12-05 | 2019-03-08 | 大连大学 | A kind of wet active carbon loading silver fiber dressing of long acting antibiotic control and preparation method thereof |
| WO2021142224A1 (en) * | 2020-01-08 | 2021-07-15 | ImMutriX Therapeutics, Inc. | Hemostatic gauze comprising carbon |
| CN112012008A (en) * | 2020-07-21 | 2020-12-01 | 苏州远浩新纺织科技有限公司 | Silver-carrying antibacterial activated carbon fiber and preparation method thereof |
| CN112226847A (en) * | 2020-11-09 | 2021-01-15 | 紫灿科技(上海)股份有限公司 | Durable antibacterial mildew-proof fiber and application thereof |
| CN112545073A (en) * | 2020-12-30 | 2021-03-26 | 河南省斯科赛斯科技发展有限公司 | Antibacterial breathable medical protective clothing |
| CN112568522A (en) * | 2020-12-30 | 2021-03-30 | 河南省斯科赛斯科技发展有限公司 | Medical protective facial mask of antibiotic type |
| WO2023006660A1 (en) * | 2021-07-25 | 2023-02-02 | Osmotex Ag | Disinfecting fabric structure |
| CN115382506A (en) * | 2022-10-26 | 2022-11-25 | 成都天佑晶创科技有限公司 | Zinc-silver-copper loaded active carbon composite material and preparation method and application thereof |
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