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WO2006049378A1 - Silice-argent nanometrique et procede de preparation - Google Patents

Silice-argent nanometrique et procede de preparation Download PDF

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Publication number
WO2006049378A1
WO2006049378A1 PCT/KR2005/001477 KR2005001477W WO2006049378A1 WO 2006049378 A1 WO2006049378 A1 WO 2006049378A1 KR 2005001477 W KR2005001477 W KR 2005001477W WO 2006049378 A1 WO2006049378 A1 WO 2006049378A1
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WO
WIPO (PCT)
Prior art keywords
silver
silica
water soluble
silicate
nanosized silica
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2005/001477
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English (en)
Inventor
Hae-Jun Park
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BIO DREAMS Co Ltd
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BIO DREAMS Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020050020267A external-priority patent/KR100557314B1/ko
Application filed by BIO DREAMS Co Ltd filed Critical BIO DREAMS Co Ltd
Publication of WO2006049378A1 publication Critical patent/WO2006049378A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/113—Silicon oxides; Hydrates thereof
    • C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
    • 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

Definitions

  • the present invention relates to nanosized silica- silver(nano-silicasilver) .
  • the present invention relates to nanosized silica-silver in which nano- silver is combined with a silica molecule and a water soluble polymer, and to a method of preparing the same.
  • Silicon (Si) which is the second most abundant material on the earth, is known to be absorbed into plants to increase disease resistance and stress resistance (Role of Root hairs and Lateral Roots in Silicon Uptake by Rice
  • an aqueous silicate solution used to treat plants, is reported to exhibit excellent preventive effects on pathogenic microorganisms chiefly responsible for causing powdery mildew or downy mildew in plants, and as well, is known to promote the physiological activity of plants, accelerating the growth of plants and inducting disease resistance and stress resistance in plants
  • Silver (Ag) is known as a powerful disinfecting agent for killing unicellular microorganisms by inactivating enzymes having metabolic functions in the microorganisms by oligodynamic action (T. N. Kim, Q. L. Feng, et al. J. Mater. Sci. Mater. Med., 9, 129 (1998)) .
  • silver although heavy metals, such as copper or zinc, may exert the same action, silver has the strongest antimicrobial effects.
  • silver is known to exhibit superb effects on algae. Research into silver as a substitute for chlorine or other toxic microbicides has been continuously progressing.
  • various inorganic antimicrobial agents that use silver have been developed to date.
  • silver-based inorganic antimicrobial agents are produced in the forms of silver-supported inorganic powders, silver colloids, metal silver powders, etc., of which silver-supported inorganic powders are the most used and thus are representative of a typical inorganic antimicrobial agent.
  • Silver in an ionic state is advantageous because it exhibits high antimicrobial activity.
  • ionic silver is disadvantageous because it is unstable due to its high reactivity and thus may be easily oxidized or reduced into a metal depending on the surrounding atmosphere. Hence, silver causes discoloration by itself or allows other materials to cause undesirable coloration, and it does not continuously exert antimicrobial activity.
  • silver in the form of a metal or oxide is advantageous because it is stable in the environment, however it disadvantageous because it should be undesirably used in a relatively increased amount due to its low antimicrobial activity.
  • nano-particles having the above advantages and disadvantages, is presently receiving attention in the form of nano-particles.
  • Various methods of preparing the nano- particles include mechanical grinding, coprecipitation, spraying, sol-gel manufacture, electrolysis, inverse microemulsion, etc.
  • these methods are disadvantageous because the size of the particles formed is difficult to control, or high cost is required to prepare fine metal particles.
  • the coprecipitation method since the particles are prepared using an aqueous solution phase, the sizes, shapes and size distribution of the particles are impossible to control.
  • electrolysis and sol-gel methods high preparation costs are required, and also, mass production is difficult.
  • the inverse microemulsion method allows sizes, shapes and size distribution of the particles to be easily controlled, it may not be used in practice due to its complicated preparation processes.
  • Korean Patent No. 0425976 discloses a method of preparing a nanometer sized silver colloid using exposure to radioactive rays, and a nanometer sized silver colloid thus prepared.
  • a silver salt is dissolved in tertiary distilled water, added with sodium dodecylsulfate (SDS) , polyvinylalcohol (PVA) or polyvinylpyrrolidone (PVP) as a colloid stabilizer, purged with nitrogen, and then exposed to radioactive rays, to prepare a silver colloid.
  • SDS sodium dodecylsulfate
  • PVA polyvinylalcohol
  • PVP polyvinylpyrrolidone
  • the silver colloid thus prepared has a particle size of 100 nm or larger, and must be used in a high concentration to exhibit antimicrobial actions on microorganisms, in particular, fungi.
  • Korean Patent Laid-open Publication No. 2003-0082065 (Application No. 10-2002-0020594) discloses a method of preparing a stable silver colloid, using a PVP used in Korean Patent No. 0425976, (1-vinylpyrrolidone) - acrylic acid copolymer, (1-vinylpyrrolidone)-vinylacetic acid copolymer, etc., as a polymer stabilizer.
  • a silver salt, silicate and a water soluble polymer are mixed, and then exposed to radioactive rays, to prepare nanosized silica-silver -particles comprising nano- silver that is combined with silica molecule and water soluble polymer, which have a uniform size, are stable and exhibit excellent antimicrobial effects at a very low concentration, thereby completing the present invention.
  • an object of the present invention is to provide nanosized silica-silver(nano-silicasilver) in which nano-silver is combined with silica molecule and water soluble polymer.
  • Another object of the present invention is to provide a method of preparing nanosized silica-silver(nano- silicasilver) , comprising preparing a solution including a silver salt, silicate and water soluble polymer, and exposing the solution to radioactive rays.
  • FIG. 1 shows a schematic flowchart for the preparation of nanosized silica-silver(nano-silicasilver) ;
  • FIG. 2 shows the stability of colloidal nanosized silica-silver in an aqueous environment
  • FIG. 3 shows the absorption spectrum (403 run) of the nanosized silica-silver, water and silver ions
  • FIG. 4 shows the absorbance (403 run) of the nanosized silica-silver varying with the concentration of sodium silicate (Na 2 SiO 3 ) ;
  • FIG. 5 shows the absorption spectrum (403 nm) of the nanosized silica-silver varying with the concentration of a water soluble polymer
  • FIG. 6 shows the absorption spectrum (403 nm) of the nanosized silica-silver varying with the kind of water soluble polymer
  • FIG. 7 shows the absorption spectrum (403 nm) of the nanosized silica-silver varying with the dose of radioactive rays
  • FIG. 8a shows the antifungal effect of nanosized silica-silver on a pathogenic fungus in plants, Bhizoctonia solani
  • FIG. 8b shows the antifungal effect of nanosized silica-silver on Botrytis cinerea
  • FIG. 9 shows the antifungal effect of nanosized silica-silver on young squash suffering from powdery mildew
  • FIG. 10 shows the antifungal effect of nanosized silica-silver on Phytophthora infestans
  • FIG. 11 shows a transmission electron microscope of nanosized silica-silver prepared according to the present invention.
  • the present invention pertains to nanosized silica-silver(nano-silicasilver) in which nano-silver is combined with silica molecule and water soluble polymer.
  • nanosized silica- silver(nano-silicasilver) means a composite comprising nanosized silver particle and silica molecule that are combined with water soluble polymer.
  • nanosized silica-silver may be prepared by exposing a solution comprising silver salt, silicate and water soluble polymer to radioactive rays.
  • the composite is a structure in which nanosized silver particles formed from silver ion and silica molecule formed from silicate are, individually or together, surrounded by water soluble polymer via exposure to radioactive rays.
  • the nanosized silica-silver in a colloidal state, may be present as nano-particles separated from each other or be formed into loose spherical clusters (FIG. 11) . As such, the clusters may be simply separated when the temperature increases. As confirmed in the absorption spectrum of FIG. 3, the nanosized silica-silver absorbs light of 403 nm which is the unique wavelength of nano-silver, and has a uniform nanoparticle size as shown in FIG. 11.
  • the particle size of the nanosized silica-silver preferably ranges from 0.5 to 30 nm, more preferably from 1 to 20 nm, and, most preferably, from 1 to 5 nm.
  • the nanosized silica-silver of the present invention exhibits high antimicrobial activity, and thus, may be used to prevent and disinfect pathogenic bacteria and fungi.
  • the nanosized silica-silver may exert excellent controlling effect on pathogenic fungi in plants even at a very low concentration, it is used at a low concentration to selectively control only pathogenic fungi in plants.
  • prevention effects may be exhibited for 3 weeks or longer.
  • the nanosized silica-silver can control both spores and hyphae, and causes no chemical injury even if it is applied at a high concentration, and also, is harmless to the human body and to plants.
  • the nanosized silica-silver of the present invention has high preservability, and may be used in the state of being diluted in tap water or agricultural water, compared to silver ions that are precipitated in the form of silver chloride along with chlorine ions in tap water.
  • the present invention relates to a method of preparing nanosized silica-silver, comprising (A) preparing a solution including silver salt, silicate and water soluble polymer, and (B) exposing the solution to radioactive rays.
  • the above method further includes bubbling (or purging) the solution with an inert gas, before, after, or before and after exposing the solution to radioactive rays.
  • the inert gas includes nitrogen, argon, etc., of which nitrogen gas may be preferably used.
  • the bubbling is preferably performed for 10 to 30 min.
  • a radical scavenger is further included to scavenge radicals generated by exposure to radioactive rays.
  • the radical scavenger includes, for example, alcohol, glutathione, vitamin-E, flavonoid, ascrobic acid, etc.
  • usageable alcohols are exemplified by methanol, ethanol, n- propanol, iso-propanol (IPA) , butanol, etc. Of these alcohols, iso-propanol may be preferably used.
  • the alcohol may be used in an amount of 0.1 to 20%, and preferably 3 to 10%, based on the total amount of the solution comprising silver salt, silicate and water soluble polymer.
  • Examples of the silver salt usable in the preparation of the nanosized silica-silver include silver nitrate (AgNO 3 ) , silver perchlorate (AgClO 4 ) , silver chlorate (AgClO 3 ), silver chloride (AgCl), silver iodide (AgI), silver fluoride (AgF), silver acetate (CH 3 COOAg), etc., of which a silver salt (e.g.: silver nitrate), easily soluble in water, may be preferably used.
  • a silver salt e.g.: silver nitrate
  • easily soluble in water may be preferably used.
  • water soluble polymer used in the preparation of the nanosized silica-silver examples include polyvinylpyrrolidone (PVP) , polyvinylalcohol (PVA) , polyacrylic acid and derivatives thereof, levan, flurane, gellane, water soluble cellulose, glucan, xanthane, water soluble starch, levan, corn starch, etc. Of these polymers, PVP may be preferably used.
  • silicate used in the preparation of the nanosized silica-silver include sodium silicate, potassium silicate, calcium silicate, magnesium silicate, etc. Of these silicates, sodium silicate may be preferably used.
  • silicate in the preparation of nano-silver has not been found in any patent.
  • the present inventors first used silicate, not silica, . to react with the silver salt, thereby providing nanosized silica-silver having high antimicrobial effects in which silica molecule and water soluble polymer are combined with nano-silver.
  • the silver salt and silicate react in a weight ratio range of silver salt:silicate of 1:0.05 to 1.3.
  • the above two materials react at a weight ratio of 1:1.
  • the particle size of nanosized silica-silver may be adjusted depending on the amount of silicate. If silicate is used in a small amount, the particles become large. Meanwhile, if silicate is excessively used relative to the silver salt, the particles are not formed.
  • the silver salt and the water soluble polymer react in a weight ratio range of silver salt:water soluble polymer of 1:0.5 to 2.5.
  • the above two materials react at a weight ratio of 1:1.
  • radioactive rays such as beta rays, gamma rays, X-rays, ultraviolet light, electron rays, etc.
  • beta rays gamma rays
  • X-rays ultraviolet light
  • electron rays etc.
  • gamma rays may be used at a dose of 10 to 30 kGy.
  • FIG. 1 is a schematic flowchart showing the preparation of nanosized silica-silver comprising silica molecule and water soluble polymer, according to the present invention.
  • the solution formed after being exposed to gamma rays, was yellow due to nano-silver particles, which means that the silica molecules and the water soluble polymer combined with silver particles through the above reaction, yielding stable nanosized silica-silver particles.
  • test groups as shown in Table 1, below were prepared and allowed to stand at room temperature for 24 hr, after which color change was observed.
  • the test groups A and B are solutions prepared by exposing the dissolved solution to radioactive rays
  • the test groups C and D are solutions in which Ag + ions were present without exposure to radioactive rays.
  • the test groups SW and DW were control groups having no silver ions or silver particles. Silver in the ionic state is easily oxidized, and are precipitated in the form of AgCl while browning in the presence of Cl " ions. Thus, the state of silver may be confirmed using tap water having Cl " ions. In the case where silver is present in the state of Ag + ions, it precipitates. Meanwhile, when silver is present in stable nano-silver particles, it shows yellow. The results are given in Table 2, below.
  • test groups SW, D and DW were colorless without color change even after allowing to stand for 24 hr, which means that silver ions, chlorine ions, or silver ions and chlorine ions were all absent.
  • the colorless test group C turned to reddish brown, which means that silver ions were formed into AgCl along with chlorine ions in tap water.
  • the test groups A and B showed yellow without color change, which means that stable nanosized silica- silver particles comprising silica molecule and water soluble polymer were formed via exposure to radioactive rays and AgCl precipitates were not formed even in the presence of chlorine ions.
  • the color change is shown in FIG. 2.
  • FIG. 3 shows the absorption spectra of the solutions of the test groups DW, B and D in Table 2, in which only the test group B absorbed light of 403 ran, which is the unique wavelength of nano-silver, and the test groups DW and D did not absorb light at the same wavelength.
  • FIG. 11 shows a photograph of the prepared nanosized silica-silver, observed using a transmission electron microscope (TEM) .
  • the nanosized silica-silver particles have uniform particle size distribution having a particle size of 1 to 5 nm smaller than 20 nm.
  • the nanosized silica-silver particles may be independently separated or be formed into loose spherical clusters due to intermolecular attraction. As such, the clusters may be easily separated by heat.
  • Nanosized silica-silver was prepared in the same manner as in Example 1, with the exception of varying the concentration of sodium silicate (Na 2 SiC> 3 ) from 0.5 to 2 g.
  • the test groups having different concentrations are shown in Table 3, below.
  • Nanosized silica-silver was prepared in the same manner as in Example 1, with the exception of varying the concentration of polyvinylpyrrolidone (PVP) from 0.5 to 2 g-
  • polyvinylpyrrolidone may be used at a concentration 0.5 to 2 times that of sodium silicate (or silver nitrate).
  • Nanosized silica-silver was prepared in the same manner as in Example 1, with the exception of using high levan or corn starch, instead of polyvinylpyrrolidone (PVP) .
  • PVP polyvinylpyrrolidone
  • the nanosized silica- silver may be prepared using polysaccharides such as levan or corn starch, although it has lower absorbance than nanosized silica-silver prepared using polyvinylpyrrolidone (PVP) .
  • PVP polyvinylpyrrolidone
  • Nanosized silica-silver was prepared in the same manner as in Example 1, with the exception of varying the dose of radioactive rays.
  • the nanosized silica-silver may be prepared using radioactive rays of 10 kGy or more.
  • a microorganism culture medium (PDA medium, Difco Co.
  • the concentration of the mixed material of each test group was set to 6 ppm and 0.3 ppm.
  • the test group A including only a silica molecule had the same result as a control group, regardless of the concentration.
  • the test group B including the nanosized silica-silver of the present invention exhibited an excellent inhibitory effect on growth of Rhizoctonia solani, even at a low concentration of 0.3 ppm.
  • a microorganism culture medium (PDA medium, Difco Co.
  • the test group A including only a silica molecule had the same result as a control group, regardless of the concentration.
  • the test group C including the nanosized silica-silver of the present invention had a higher inhibitory effect on growth of Botrytis cinerea than those of test groups including 20 nm sized silver and 100 nm sized silver, even at a low concentration of 3 ppm.
  • Example 1 To assay controlling effects of the nanosized silica- silver prepared in Example 1 on pathogenic fungi in plants, the present experiment was carried out in a plastic film greenhouse of young squash plants infected with powdery mildew. 0.3 ppm nanosized silica-silver was uniformly applied onto young squash plants infected with powdery mildew. After the nanosized silica-silver was applied, the state of powdery mildew was observed for 3 weeks.
  • FIG. 9 is photographs showing the controlling effects on powdery mildew, 0, 3 and 7 days after the nanosized silica-silver was applied. Although powdery mildew was widespread on the leaves of young squash at day 0, controlling effects close to 100% were exhibited after the nanosized silica-silver was applied. After about 3 weeks, powdery mildew was not observed.
  • FIG. 10 is photographs showing the results of spray treatment 3 days after inoculation and the controlling effects 6 and 9 days after the spray treatment. From the photographs of FIG. 10, the nanosized silica-silver was confirmed to exhibit excellent controlling effects on Phytophthora lnfestans.
  • the present invention provides nanosized silica-silver and a method of preparing the same.
  • stable nanosized silica-silver may be provided in a high concentration at room temperature via a simple process.
  • the colloidal solution including the nanosized silica-silver particles thus prepared exhibits excellent controlling effects on pathogenic microorganisms in plants, at a low concentration.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Pest Control & Pesticides (AREA)
  • Plant Pathology (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

L'invention concerne un composé de silice-argent nanométrique et son procédé de préparation. L'invention concerne, plus spécifiquement, un composé de silice-argent nanométrique obtenu de la combinaison de nano-argent et d'une molécule de silice et d'un polymère soluble dans l'eau, ainsi qu'un procédé de préparation du composé de silice-argent nanométrique, consistant à préparer une solution composée de sel d'argent, de silicate et d'un polymère soluble dans l'eau, et à exposer la solution à des rayons radioactifs, afin d'obtenir un composé de silice-argent nanométrique à partir de la combinaison de nano-argent et d'une molécule de silice et d'un polymère soluble dans l'eau.<SUB/>
PCT/KR2005/001477 2004-11-08 2005-05-20 Silice-argent nanometrique et procede de preparation Ceased WO2006049378A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2004-0090513 2004-11-08
KR20040090513 2004-11-08
KR1020050020267A KR100557314B1 (ko) 2004-11-08 2005-03-10 나노-실리카은 및 이의 제조방법
KR10-2005-0020267 2005-03-10

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008017240A1 (fr) * 2006-08-04 2008-02-14 Zhu, Xiangxiang Sol protecteur de béton
CN100494057C (zh) * 2006-10-09 2009-06-03 中国科学技术大学 一种二氧化硅空心球的制备方法
WO2009072911A1 (fr) 2007-12-06 2009-06-11 Poch S.A. Poudre composée de nanoparticules d'argent métallique conjuguées en surface avec un support de silice, procédé pour sa fabrication et son utilisation
WO2010010569A1 (fr) * 2008-07-24 2010-01-28 Tata Chemicals Ltd Procédé de formation d’une composition de cendres de téguments de riz
WO2010010570A1 (fr) * 2008-07-24 2010-01-28 Tata Chemicals Ltd. Procédé de formation d’une composition de cendres de téguments de riz
WO2010024598A3 (fr) * 2008-08-27 2010-06-17 주식회사 지피엔이 Procédé de préparation de compositions antimicrobiennes, antifongiques et antivirales
WO2010015801A3 (fr) * 2008-08-04 2011-03-24 Intrinsiq Materials Limited Composition biocide
WO2011128488A1 (fr) * 2010-04-16 2011-10-20 Consejo Superior De Investigaciones Científicas (Csic) Composition comprenant un silicate d'aluminium et des nanoparticules d'argent à action bactéricide
WO2011139170A1 (fr) * 2010-05-07 2011-11-10 Instytut Chemii Przemystowej Im. Prof. Ignacego Procédé de fabrication de nanopoudres de silice présentant de propriétés fongicides, notamment pour des composites polymères
CN110364287A (zh) * 2019-08-09 2019-10-22 陕西煤业化工技术研究院有限责任公司 一种抗uv辐照的银纳米线墨水及其配制方法和制备的透明导电薄膜
CN119332533A (zh) * 2024-12-19 2025-01-21 中国人民解放军国防科技大学 一种低热膨胀系数的复合纳米银纸的制备方法和应用

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0318196A2 (fr) * 1987-11-25 1989-05-31 Minnesota Mining And Manufacturing Company Métaux colloidaux dispersés dans des monomères ou des polymères
JP2000143421A (ja) * 1998-08-31 2000-05-23 Daido Steel Co Ltd 金属―セラミック複合抗菌剤、ならびにそれを用いた抗菌性高分子材料、抗菌性塗装皮膜及び抗菌性部材
KR20020043363A (ko) * 2000-12-04 2002-06-10 박호군 나노 단위 크기의 금속 입자가 함유된 고분자 복합 소재및 그 제조 방법
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KR20040048558A (ko) * 2002-12-04 2004-06-10 나노스피어 주식회사 전도성 유기-무기 복합미립자의 제조방법

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008017240A1 (fr) * 2006-08-04 2008-02-14 Zhu, Xiangxiang Sol protecteur de béton
CN100494057C (zh) * 2006-10-09 2009-06-03 中国科学技术大学 一种二氧化硅空心球的制备方法
WO2009072911A1 (fr) 2007-12-06 2009-06-11 Poch S.A. Poudre composée de nanoparticules d'argent métallique conjuguées en surface avec un support de silice, procédé pour sa fabrication et son utilisation
WO2010010569A1 (fr) * 2008-07-24 2010-01-28 Tata Chemicals Ltd Procédé de formation d’une composition de cendres de téguments de riz
WO2010010570A1 (fr) * 2008-07-24 2010-01-28 Tata Chemicals Ltd. Procédé de formation d’une composition de cendres de téguments de riz
WO2010015801A3 (fr) * 2008-08-04 2011-03-24 Intrinsiq Materials Limited Composition biocide
WO2010024598A3 (fr) * 2008-08-27 2010-06-17 주식회사 지피엔이 Procédé de préparation de compositions antimicrobiennes, antifongiques et antivirales
WO2011128488A1 (fr) * 2010-04-16 2011-10-20 Consejo Superior De Investigaciones Científicas (Csic) Composition comprenant un silicate d'aluminium et des nanoparticules d'argent à action bactéricide
ES2367387A1 (es) * 2010-04-16 2011-11-03 Consejo Superior De Investigaciones Científicas (Csic) Composición de silicatos de aluminio y nanopartículas de plata como bactericidas.
WO2011139170A1 (fr) * 2010-05-07 2011-11-10 Instytut Chemii Przemystowej Im. Prof. Ignacego Procédé de fabrication de nanopoudres de silice présentant de propriétés fongicides, notamment pour des composites polymères
CN102985366A (zh) * 2010-05-07 2013-03-20 伊格内茨格·莫希齐茨基亚格教授工业化工研究院 特别是对聚合物复合材料具有杀真菌性能的二氧化硅纳米粉末的制备方法
US9126839B2 (en) 2010-05-07 2015-09-08 Instytut Chemi Przemyslowej Im. Prof. Ignacego Moscickiego Method of manufacturing silica nanopowders with fungicidal properties, especially for polymer composites
CN110364287A (zh) * 2019-08-09 2019-10-22 陕西煤业化工技术研究院有限责任公司 一种抗uv辐照的银纳米线墨水及其配制方法和制备的透明导电薄膜
CN119332533A (zh) * 2024-12-19 2025-01-21 中国人民解放军国防科技大学 一种低热膨胀系数的复合纳米银纸的制备方法和应用

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