WO2010072882A1 - Polvo compuesto nanoestructurado fosfato de calcio-plata. procedimiento de obtención y sus aplicaciones bactericidas y fungicidas - Google Patents
Polvo compuesto nanoestructurado fosfato de calcio-plata. procedimiento de obtención y sus aplicaciones bactericidas y fungicidas Download PDFInfo
- Publication number
- WO2010072882A1 WO2010072882A1 PCT/ES2009/070628 ES2009070628W WO2010072882A1 WO 2010072882 A1 WO2010072882 A1 WO 2010072882A1 ES 2009070628 W ES2009070628 W ES 2009070628W WO 2010072882 A1 WO2010072882 A1 WO 2010072882A1
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- Prior art keywords
- silver
- calcium
- weight
- powder
- calcium phosphate
- Prior art date
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- 239000000843 powder Substances 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 35
- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 14
- 230000000855 fungicidal effect Effects 0.000 title claims abstract description 11
- UXCIYSZDIOQTQG-UHFFFAOYSA-K calcium;silver;phosphate Chemical compound [Ca+2].[Ag+].[O-]P([O-])([O-])=O UXCIYSZDIOQTQG-UHFFFAOYSA-K 0.000 title abstract description 5
- 239000002131 composite material Substances 0.000 title abstract description 5
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 claims abstract description 33
- 239000001506 calcium phosphate Substances 0.000 claims abstract description 22
- 235000011010 calcium phosphates Nutrition 0.000 claims abstract description 22
- 229910000389 calcium phosphate Inorganic materials 0.000 claims abstract description 21
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 235000013305 food Nutrition 0.000 claims abstract description 9
- 238000003980 solgel method Methods 0.000 claims abstract description 9
- 239000007943 implant Substances 0.000 claims abstract description 6
- 239000000645 desinfectant Substances 0.000 claims abstract description 5
- 238000004806 packaging method and process Methods 0.000 claims abstract description 5
- 239000003973 paint Substances 0.000 claims abstract description 5
- 229910052709 silver Inorganic materials 0.000 claims description 55
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 54
- 239000004332 silver Substances 0.000 claims description 54
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 claims description 45
- 229910052588 hydroxylapatite Inorganic materials 0.000 claims description 44
- 239000002114 nanocomposite Substances 0.000 claims description 23
- 239000002243 precursor Substances 0.000 claims description 17
- 239000011575 calcium Substances 0.000 claims description 16
- 239000002105 nanoparticle Substances 0.000 claims description 15
- 239000007787 solid Substances 0.000 claims description 15
- 238000002360 preparation method Methods 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 13
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 12
- 229910052791 calcium Inorganic materials 0.000 claims description 12
- 239000007900 aqueous suspension Substances 0.000 claims description 11
- 150000001875 compounds Chemical class 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 239000007864 aqueous solution Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 230000008021 deposition Effects 0.000 claims description 8
- 239000006185 dispersion Substances 0.000 claims description 8
- 239000000243 solution Substances 0.000 claims description 7
- 239000000725 suspension Substances 0.000 claims description 7
- 239000003638 chemical reducing agent Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 238000006722 reduction reaction Methods 0.000 claims description 6
- 239000003945 anionic surfactant Substances 0.000 claims description 5
- 239000012153 distilled water Substances 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 239000012298 atmosphere Substances 0.000 claims description 4
- 238000001354 calcination Methods 0.000 claims description 4
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 claims description 4
- 150000001768 cations Chemical class 0.000 claims description 4
- 238000011065 in-situ storage Methods 0.000 claims description 4
- 230000009467 reduction Effects 0.000 claims description 4
- BDZBKCUKTQZUTL-UHFFFAOYSA-N triethyl phosphite Chemical compound CCOP(OCC)OCC BDZBKCUKTQZUTL-UHFFFAOYSA-N 0.000 claims description 4
- 230000032683 aging Effects 0.000 claims description 3
- 239000012467 final product Substances 0.000 claims description 3
- 238000000265 homogenisation Methods 0.000 claims description 3
- 239000000523 sample Substances 0.000 claims description 3
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 2
- 238000013019 agitation Methods 0.000 claims description 2
- 239000013528 metallic particle Substances 0.000 claims description 2
- 229910052698 phosphorus Inorganic materials 0.000 claims description 2
- 239000011574 phosphorus Substances 0.000 claims description 2
- 239000004094 surface-active agent Substances 0.000 claims description 2
- 238000002604 ultrasonography Methods 0.000 claims description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims 1
- 229910019142 PO4 Inorganic materials 0.000 claims 1
- 230000008030 elimination Effects 0.000 claims 1
- 238000003379 elimination reaction Methods 0.000 claims 1
- 238000010979 pH adjustment Methods 0.000 claims 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims 1
- 239000010452 phosphate Substances 0.000 claims 1
- 238000000151 deposition Methods 0.000 abstract description 8
- 239000000417 fungicide Substances 0.000 abstract description 3
- 231100000053 low toxicity Toxicity 0.000 abstract description 2
- 239000003899 bactericide agent Substances 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000003115 biocidal effect Effects 0.000 description 7
- 241000191938 Micrococcus luteus Species 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 241000588724 Escherichia coli Species 0.000 description 5
- 230000000845 anti-microbial effect Effects 0.000 description 5
- 239000000499 gel Substances 0.000 description 5
- 239000001963 growth medium Substances 0.000 description 5
- 108700009872 mild silver Proteins 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 244000005700 microbiome Species 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- 241000235644 Issatchenkia Species 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 229940041514 candida albicans extract Drugs 0.000 description 3
- 239000002270 dispersing agent Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 239000012138 yeast extract Substances 0.000 description 3
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- NDVLTYZPCACLMA-UHFFFAOYSA-N silver oxide Chemical group [O-2].[Ag+].[Ag+] NDVLTYZPCACLMA-UHFFFAOYSA-N 0.000 description 2
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 2
- 238000004627 transmission electron microscopy Methods 0.000 description 2
- ZHJGWYRLJUCMRT-UHFFFAOYSA-N 5-[6-[(4-methylpiperazin-1-yl)methyl]benzimidazol-1-yl]-3-[1-[2-(trifluoromethyl)phenyl]ethoxy]thiophene-2-carboxamide Chemical compound C=1C=CC=C(C(F)(F)F)C=1C(C)OC(=C(S1)C(N)=O)C=C1N(C1=C2)C=NC1=CC=C2CN1CCN(C)CC1 ZHJGWYRLJUCMRT-UHFFFAOYSA-N 0.000 description 1
- -1 Ag 2 O Chemical class 0.000 description 1
- 229920001817 Agar Polymers 0.000 description 1
- 101710134784 Agnoprotein Proteins 0.000 description 1
- 206010006956 Calcium deficiency Diseases 0.000 description 1
- 241000192125 Firmicutes Species 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 101100113998 Mus musculus Cnbd2 gene Proteins 0.000 description 1
- 239000001888 Peptone Substances 0.000 description 1
- 108010080698 Peptones Proteins 0.000 description 1
- 239000008272 agar Substances 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 239000004599 antimicrobial Substances 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 239000005312 bioglass Substances 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 210000004962 mammalian cell Anatomy 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002082 metal nanoparticle Substances 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000000278 osteoconductive effect Effects 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 235000019319 peptone Nutrition 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000013207 serial dilution Methods 0.000 description 1
- 229910001961 silver nitrate Inorganic materials 0.000 description 1
- 229910001923 silver oxide Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 239000012137 tryptone Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- A01N25/26—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 in coated particulate form
-
- 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
-
- 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
- A01N59/26—Phosphorus; Compounds thereof
-
- 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82B—NANOSTRUCTURES FORMED BY MANIPULATION OF INDIVIDUAL ATOMS, MOLECULES, OR LIMITED COLLECTIONS OF ATOMS OR MOLECULES AS DISCRETE UNITS; MANUFACTURE OR TREATMENT THEREOF
- B82B1/00—Nanostructures formed by manipulation of individual atoms or molecules, or limited collections of atoms or molecules as discrete units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82B—NANOSTRUCTURES FORMED BY MANIPULATION OF INDIVIDUAL ATOMS, MOLECULES, OR LIMITED COLLECTIONS OF ATOMS OR MOLECULES AS DISCRETE UNITS; MANUFACTURE OR TREATMENT THEREOF
- B82B3/00—Manufacture or treatment of nanostructures by manipulation of individual atoms or molecules, or limited collections of atoms or molecules as discrete units
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/32—Phosphates of magnesium, calcium, strontium, or barium
-
- 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
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
Definitions
- the antibacterial properties of silver in low concentrations against a wide range of pathogens are well known, including strains of common bacteria that cause implant-associated infections, as well as their non-toxicity to mammalian cells.
- Most of the biomaterials that contain silver as an antimicrobial substance consist of the elemental or cationic form of the metal supported by both organic and inorganic matrices.
- the antimicrobial activity is studied in the cases of polymers and bioglasses that contain silver, but this is not the case in the case of 5 nanostructured calcium-silver phosphate composites.
- the biocidal activity of the silver nanoparticles is influenced by their size: the smaller the size, the greater the antimicrobial activity, so that the agglomeration of the nanoparticles presents a problem.
- a solution to avoid this disadvantage is to work with the nanoparticles supported on the surface of different substrates.
- An object of the invention constitutes a nanocomposite or nanostructured powder, hereinafter nanocomposite powder of the invention, constituted by a calcium phosphate, preferably with a particle size of less than 150 nm and having Ag nanoparticles adhered to its surface, preferably inferior to 50 nm
- nanocomposite powder of the invention constituted by a calcium phosphate, preferably with a particle size of less than 150 nm and having Ag nanoparticles adhered to its surface, preferably inferior to 50 nm
- a particular object of the invention constitutes the nanocomposite powder in which the calcium phosphate belongs, by way of illustration and without limiting the scope of the invention, to the following group: hydroxyapatite, ⁇ -TCP, ⁇ -TCP and / or mixtures of they, preferably hydroxyapatite (HA).
- Another object of the invention constitutes a process for obtaining the nanocomposite powder of the invention, hereinafter the method of the invention, which comprises the following steps: a. Preparation of nanometric calcium phosphate from a sol-gel processing route, and b. Deposition of silver nanoparticles on the surface of calcium phosphate.
- Another object of the invention constitutes the use of the nanocomposite powder of the invention in the preparation of a bactericidal and / or fungicidal composition useful as a universal disinfectant for applications belonging, by way of illustration and without limiting the scope of the present invention, to the following group: surgical implants, public use facilities - sanitary and hospital, transport, etc. -, food, dental, paints, clothing and packaging - food, pharmaceutical, medical devices.
- This invention describes a nanostructured powder consisting of HA nanoparticles, of a size smaller than 140 nm, with Ag metal nanoparticles adhered to the surface and homogeneously dispersed, with a particle size of less than 50 nm ( Figures 1 and 2), with Bactericidal and fungicidal activity based on calcium phosphates as a substrate with silver nanoparticles on its surface.
- Figures 1 and 2 Bactericidal and fungicidal activity based on calcium phosphates as a substrate with silver nanoparticles on its surface.
- an alternative, simple and low-cost procedure is presented for obtaining said nanostructured composite material, more specifically through two different methods (Example 1).
- the first advantage provided by the present invention with respect to the current state of the art constitutes the fact that the agglomeration of the nanoparticles is avoided by being adhered to the surface of a substrate.
- the second advantage is its bactericidal and fungicidal efficiency, similar to that of commercial products (Example 2).
- the third advantage is its low toxicity, shown by verifying that this material leaches 2 orders of magnitude less than silver in the case of HA / Ag ( ⁇ 5 ppm) than in the case of Vitellinate (approx. 800-1300 ppm ), which implies a toxicity far below that of the commercial product and well below the toxic level (The amount of silver used is of the order of 1% by weight), and with a similar efficacy (Example 2).
- an object of the invention constitutes a nanocomposite or nanostructured powder, hereinafter nanocomposite powder of the invention, constituted by a calcium phosphate, preferably with a particle size of less than 150 nm and having Ag nanoparticles adhered on its surface, preferably less than 50 nm.
- a particular object of the invention constitutes the nanocomposite powder in which the calcium phosphate belongs, by way of illustration and without limiting the scope of the invention, to the following group: hydroxyapatite, ⁇ -TCP, ⁇ -TCP and / or mixtures of they, preferably hydroxyapatite (HA).
- Another particular object of the invention constitutes the powder nanocomposite in which the content of silver metallic particles is between 0.01% and 8% by weight, the optimum percentage being 1% by weight of silver.
- Another object of the invention constitutes a process for obtaining the nanocomposite powder of the invention, hereinafter the method of the invention, which comprises the following steps: a. Preparation of nanometric calcium phosphate from a sol-gel processing route, and b. Deposition of silver nanoparticles on the surface of calcium phosphate.
- step a) the calcium phosphate has been prepared by a sol-gel process, which comprises the following steps: a) Preparation of the corresponding aqueous solutions with Ia necessary amount of triethyl phosphite and calcium nitrate to obtain in the final mixture the desired Ca / P molar ratio, preferably 1.67 in the case of hydroxyapatite, b) Drip of the phosphorus solution on calcium while stirring strongly, maintaining conditions controlled of temperature and pH, c) Stirring of the resulting colloidal suspension and subsequent aging at room temperature, preferably for 24 hours, to form a gel, and d) Drying the gel in a vacuum oven until the solvent is completely removed and calcining at temperatures between 500 ° C and 1000 ° C, preferably 550 ° C, to obtain the powder of nanometric size and well cris carved
- step b) it comprises the following steps
- Another particular object of the invention constitutes the process of the invention in which in step b) it comprises the following steps (Method 2): a) Preparation of an aqueous suspension with the hydroxyapatite powder obtained in 6 to which it is add an anionic surfactant in low concentration, b) Adjust pH to 7 with an aqueous solution of 0.1 N NaOH, c) Apply an ultrasonic probe for 1-10 minutes and complete homogenization and disintegration in a ball mill, d) Addition drop by drop of the necessary amount of the solution of the silver precursor, AgNO ⁇ , to obtain in the final product a concentration of Ag 0 comprised between 0.01 and 8% weight in the final compound, maintaining strong stirring for 10 minutes, preferably 1% by weight of silver, e) Chemical reduction in situ of the silver, using any reducing agent, preferably NaBH 4 , which is added dropwise to the dispersion maintaining the strong stirring, and f) Filtering, washing with distilled water and drying in an oven at 60 ° C.
- Another object of the invention constitutes the use of the nanocomposite powder of the invention in the preparation of a bactericidal and / or fungicidal composition useful as a universal disinfectant for belonging applications, by way of illustration and without limiting the scope of the present invention. , to the following group: surgical implants, public use facilities - sanitary and hospital, transport, etc. -, food, dental, paints, clothing and packaging - food, pharmaceutical, medical devices.
- Figure 1 Micrograph obtained by Transmission Electron Microscopy in which the homogeneous distribution of silver nanoparticles smaller than 20 nm adhered to the surface of a hydroxyapatite nanoparticle of size 140 nm is shown, approximately obtained by method 1.
- Figure 2. Micrograph obtained by Transmission Electron Microscopy in which a nanocomposite powder obtained by method 2 is shown, where it is observed that the Ag nanoparticles are smaller than 15 nm.
- Example 1 Procedure for obtaining the nanocomposite powders of the invention
- the procedure for obtaining the nanocomposite powder of the invention comprises two main stages of preparation of the nanometric calcium phosphate from a sol-gel processing route, and a deposition of silver nanoparticles on the surface of the calcium phosphate , and which are detailed below.
- nanostructured powders of the invention were obtained through two different methods.
- an anionic surfactant is introduced in low concentration as a dispersant (1% by weight with respect to the concentration in hydroxyapatite solids); b) Adding, protecting from light, an aqueous solution of the precursor silver salt with the necessary concentration so that the content of elemental silver is between 0.01 and 8% by weight in the final compound HA-Ag (referred to solids content of HA); c) While the suspension is vigorously stirred, the pH is adjusted to 9, so that Ag + cations are precipitated as oxide, Ag 2 O, and d) After filtration and washing, it is dried and reduced in an atmosphere of Ar / 10% H 2 in the temperature range between 150 and 500 ° C.
- the deposition of silver nanoparticles, Ag 0 , on hydroxyapatite is produced from a silver precursor dispersed in water under optimal pH and dispersant conditions. The reduction is carried out in situ with a reducing agent at room temperature. a) An aqueous suspension is prepared with the hydroxyapatite powder obtained.
- an anionic surfactant is introduced in low concentration as dispersant (Dolapix); b) The pH is adjusted to 7 with an aqueous solution of 0.1 N NaOH to achieve a good dispersion of the HA particles and, at the same time, avoid the precipitation of Ag + ions such as Ag 2 O, which occurs at pH values above 8; c) Ultrasound probe of 1-10 minutes. Homogenization and disintegration in ball mill;
- a nanocomposite powder of the invention was thus obtained, where it is observed that the Ag nanoparticles are smaller than 15 nm.
- Escher ⁇ chia coli JM 110 Gram-negative bacteria
- Micrococcus luteus Gram-positive bacteria
- Issatchenkia or ⁇ entalis yeast
- the microorganisms were seeded in solid medium, Petri dishes, from Luria Bertani (LB) (containing: 1% tryptone, 0.5% yeast extract, 1% CINa, 1.5% agar) for E. coli JM110 and M. luteus
- Yeast Extract Destrosa (containing: 1% yeast extract, 2% peptone, 2% glucose). The plates were incubated 24 hours at 37 ° C. Then, colonies isolated from the anterior plates of each microorganism were inoculated in 5 mL of LB (bacteria) or YEPD (yeast) and grown at 37 ° C for 5 hours to obtain pre-cultures.
- suspensions of 200 mg / ml (weight / weight) in water of preparations M1 and M2 were prepared, containing 1% silver.
- 10 ⁇ L of each of the precultures of the microorganisms were inoculated to 1 mL of LB or YEPD, depending on the microorganism.
- 150 ⁇ L of the HA / nAg samples (M 1 and M2) were added to the cultures resulting in a final concentration of 0.13%
- samples without silver were prepared as a control, consisting of a mixture of water plus the corresponding nutrient. The cultures were incubated at 37 ° C under agitation and aliquots of the different cultures were taken for viable counting after serial dilutions of the different cultures.
- the concentration of leached calcium in the culture medium was in the range 15-30 ppm.
- the silver concentration was ⁇ 5 ppm.
- the same concentration of starting silver was tested to inoculate from commercial nanostructured silver Vitellinate (Argenol, particle size smaller than 20 nm); observing that approximately 1300 ppm of silver was leached.
- HA obtained by method 1 (AgN ⁇ 3 was used as a precursor of silver, the silver content in the final compound, HA-Ag, being 1% by weight (based on the solids content of HA)).
- the test performed with Escherichia coli JM 110 shows a title at 24 hours ⁇ 1.0-10 4 , while the control is 1.4-10 11 .
- the concentration of leached calcium in the culture medium was in the range 15-30 ppm.
- the silver concentration was ⁇ 5 ppm.
- the same concentration of starting silver was tested to inoculate from commercial nanostructured silver Vitellinate (Argenol, particle size smaller than 20 nm); observing that approximately 900 ppm was leached.
- HA obtained by method 2 (AgN ⁇ 3 was used as a precursor of silver, the silver content in the final compound, HA-Ag, being 1% by weight (based on the solids content of HA)).
- the bactericidal test performed with Issatchenkia Or ⁇ ntalis showed a 24-hour title of 1.0-10 4 , while the control is 1.2-10 11 .
- the concentration of leached calcium in the culture medium was in the range 15-30 ppm.
- the silver concentration was ⁇ 5 ppm.
- the same concentration of starting silver was inoculated from commercial nanostructured silver Vitellinate (Argenol, particle size smaller than 20 nm); observing that they leached approximately 800 ppm of silver.
- HA obtained by method 2 (it was used as a precursor of AgNO ⁇ silver, the silver content in the final compound, HA-Ag, being 1% by weight (based on the solids content of HA)).
- the test performed with Micrococcus luteus shows a title at 24 hours 4.0-10 4 , while the control is 3.0-10 9 .
- the concentration of leached calcium in the culture medium was in the range 15-30 ppm.
- the silver concentration was ⁇ 5 ppm.
- the same concentration of starting silver was tested to inoculate from commercial nanostructured silver vitellinate ⁇ Argenol. particle size less than 20 nm); observing that approximately 900 ppm was leached.
- HA obtained by method 2 (it was used as a precursor of AgNO 3 silver, the silver content in the final compound, HA-Ag, being 1% by weight (based on the solids content of HA)).
- the test performed with Escherichia coli JM 110 shows a title at 24 hours ⁇ 1.0-10 4 , while the control is 1.4-10 11 .
- the concentration of leached calcium in the culture medium was in the range 15-30 ppm.
- the silver concentration was ⁇ 5 ppm.
- the same concentration of starting silver was tested to inoculate from commercial nanostructured silver Vitellinate (Argenol, particle size smaller than 20 nm); observing that approximately 1300 ppm was leached.
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Priority Applications (6)
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CN2009801573703A CN102361717A (zh) | 2008-12-24 | 2009-12-23 | 纳米结构的钙-银磷酸盐复合粉末、用于获得所述粉末的方法以及其杀菌和杀真菌应用 |
JP2011542851A JP2012513971A (ja) | 2008-12-24 | 2009-12-23 | ナノ構造のリン酸カルシウム銀複合粉体、その粉体の製造方法並びに抗菌及び殺菌への利用 |
CA2748420A CA2748420A1 (en) | 2008-12-24 | 2009-12-23 | Nanostructured calcium-silver phosphate composite powder, process for obtaining said powder and bactericidal and fungicidal applications thereof |
US13/142,220 US20120040005A1 (en) | 2008-12-24 | 2009-12-23 | Nanostructured calcium-silver phosphate composite powders, process for obtaining the powders, and bactericidal and fungicidal applications thereof |
EP09834169A EP2380687A4 (en) | 2008-12-24 | 2009-12-23 | NANOSTRUCTURED POWDER COMPOUND OF CALCIUM-SILVER PHOSPHATE. METHOD OF OBTAINING AND ITS BACTERICIDAL AND FUNGICIDAL APPLICATIONS |
US14/076,887 US20140065306A1 (en) | 2008-12-24 | 2013-11-11 | Nanostructured calcium-silver phosphate composite powders, process for obtaining the powders and bactericidal and fungicidal applications thereof |
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ES200803695A ES2341749B1 (es) | 2008-12-24 | 2008-12-24 | Polvo compuesto nanoestructurado fosfato de calcio-plata. procedimiento de obtencion y sus aplicaciones bactericidas y fungicidas. |
ESP200803695 | 2008-12-24 |
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US13/142,220 A-371-Of-International US20120040005A1 (en) | 2008-12-24 | 2009-12-23 | Nanostructured calcium-silver phosphate composite powders, process for obtaining the powders, and bactericidal and fungicidal applications thereof |
US14/076,887 Division US20140065306A1 (en) | 2008-12-24 | 2013-11-11 | Nanostructured calcium-silver phosphate composite powders, process for obtaining the powders and bactericidal and fungicidal applications thereof |
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US (2) | US20120040005A1 (es) |
EP (1) | EP2380687A4 (es) |
JP (1) | JP2012513971A (es) |
CN (1) | CN102361717A (es) |
CA (1) | CA2748420A1 (es) |
ES (1) | ES2341749B1 (es) |
WO (1) | WO2010072882A1 (es) |
Cited By (4)
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CN102657228A (zh) * | 2012-05-21 | 2012-09-12 | 华东理工大学 | 一种纳米银复合杀菌剂的原位制备方法 |
WO2012171911A1 (en) | 2011-06-14 | 2012-12-20 | Dow Corning Corporation | Pressure material |
CN104400001A (zh) * | 2014-11-14 | 2015-03-11 | 东北林业大学 | 一种利用钩状木霉胞外液制备Ag/AgCl纳米复合材料的方法 |
CN104692348A (zh) * | 2015-03-22 | 2015-06-10 | 河北工业大学 | 制备碳纳米管增强羟基磷灰石复合材料的双原位合成方法 |
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EP2136621B1 (en) * | 2007-04-04 | 2013-05-08 | Perlen Converting AG | Antimicrobial material |
CN103289408A (zh) * | 2012-02-29 | 2013-09-11 | 刘芳 | 一种硅橡胶的制备方法 |
PL231410B1 (pl) * | 2013-06-10 | 2019-02-28 | Inst Chemii Fizycznej Polskiej Akademii Nauk | Sposób modyfikowania powierzchni nanokompozytami i zastosowanie materiału nanokompozytowego zmodyfikowanego tym sposobem do wytwarzania powierzchni antyseptycznych |
CL2013002101A1 (es) * | 2013-07-23 | 2014-08-29 | Univ Chile | Aditivo que confiere propiedades biocidas a distintos materiales que comprende un material de soporte o portador modificado con un agente bacteriano que forma estructuras nanometricas sobre la superficie externa de dicho material de soporte; y metodo para preparacion de dicho aditivo. |
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WO2017150539A1 (ja) * | 2016-02-29 | 2017-09-08 | 国立大学法人東京工業大学 | 銀含有リン酸カルシウム焼結体及びその製造方法 |
CN106914629A (zh) * | 2017-03-02 | 2017-07-04 | 扬州大学 | 一种磷酸钙/纳米银壳层复合材料的制备方法 |
CN107186221B (zh) * | 2017-05-08 | 2019-07-23 | 华南师范大学 | 一种银纳米颗粒的合成方法 |
CN107309437B (zh) * | 2017-07-07 | 2019-10-22 | 东北师范大学 | 一种金纳米星/磷酸钙纳米粒子及其制备方法 |
CN111226917A (zh) * | 2020-03-26 | 2020-06-05 | 深圳市亚微新材料有限公司 | 一种磷酸氢锆纳米银抗菌复合材料的制备方法 |
CN113080204B (zh) * | 2021-03-10 | 2022-04-08 | 蒙娜丽莎集团股份有限公司 | 一种具有持久抗菌功能的载银磷酸钙及其湿法合成方法 |
BR112024001172A2 (pt) * | 2021-07-21 | 2024-04-30 | Univ Granada | Nanopartículas de fosfato de cálcio carregadas com jasmonato para induzir respostas eficientes de defesa de plantas |
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CN1942396B (zh) * | 2004-03-15 | 2010-09-01 | 苏黎世联合高等工业学校 | 金属盐纳米颗粒,特别是包含钙和磷酸根的纳米颗粒的火焰合成 |
WO2007149386A2 (en) * | 2006-06-22 | 2007-12-27 | Biomet 3I, Llc. | Deposition of silver particles on an implant surface |
EP2136621B1 (en) * | 2007-04-04 | 2013-05-08 | Perlen Converting AG | Antimicrobial material |
JP2009046410A (ja) * | 2007-08-17 | 2009-03-05 | Naoyuki Kato | 抗菌組成物およびその製造方法 |
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2008
- 2008-12-24 ES ES200803695A patent/ES2341749B1/es active Active
-
2009
- 2009-12-23 CN CN2009801573703A patent/CN102361717A/zh active Pending
- 2009-12-23 US US13/142,220 patent/US20120040005A1/en not_active Abandoned
- 2009-12-23 JP JP2011542851A patent/JP2012513971A/ja active Pending
- 2009-12-23 WO PCT/ES2009/070628 patent/WO2010072882A1/es active Application Filing
- 2009-12-23 EP EP09834169A patent/EP2380687A4/en not_active Withdrawn
- 2009-12-23 CA CA2748420A patent/CA2748420A1/en not_active Abandoned
-
2013
- 2013-11-11 US US14/076,887 patent/US20140065306A1/en not_active Abandoned
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012171911A1 (en) | 2011-06-14 | 2012-12-20 | Dow Corning Corporation | Pressure material |
CN102657228A (zh) * | 2012-05-21 | 2012-09-12 | 华东理工大学 | 一种纳米银复合杀菌剂的原位制备方法 |
CN104400001A (zh) * | 2014-11-14 | 2015-03-11 | 东北林业大学 | 一种利用钩状木霉胞外液制备Ag/AgCl纳米复合材料的方法 |
CN104400001B (zh) * | 2014-11-14 | 2016-03-16 | 东北林业大学 | 一种利用钩状木霉胞外液制备Ag/AgCl纳米复合材料的方法 |
CN104692348A (zh) * | 2015-03-22 | 2015-06-10 | 河北工业大学 | 制备碳纳米管增强羟基磷灰石复合材料的双原位合成方法 |
CN104692348B (zh) * | 2015-03-22 | 2016-08-24 | 河北工业大学 | 制备碳纳米管增强羟基磷灰石复合材料的双原位合成方法 |
Also Published As
Publication number | Publication date |
---|---|
ES2341749A1 (es) | 2010-06-25 |
EP2380687A4 (en) | 2012-07-25 |
US20140065306A1 (en) | 2014-03-06 |
CN102361717A (zh) | 2012-02-22 |
EP2380687A1 (en) | 2011-10-26 |
US20120040005A1 (en) | 2012-02-16 |
JP2012513971A (ja) | 2012-06-21 |
ES2341749B1 (es) | 2011-04-28 |
CA2748420A1 (en) | 2010-07-01 |
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