# US 10,118,838 B2 · Product for removing pollutants from a fluid, and method for producing same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,118,838 B2 - Document ID: US10118838B2 - Status: Granted - Kind: B2 - Application number: 13/383,883 - Filed: 2010-07-13 - Published: 2012-06-07 - Granted: 2018-11-06 - Earliest claimed: 2009-07-13 - Applicants: Serigne Dioum - Inventors: Serigne Dioum - Web page: https://patentgrep.com/patent/US10118838B2 ## CPC - C02F 1/288: {using composite sorbents, e.g. coated, impregnated, multi-layered} - A01N 25/08: containing solids as carriers or diluents - A01N 25/34: Shaped forms, e.g. sheets, not provided for in any other sub-group of this main group - C23C 14/046: {Coating cavities or hollow spaces, e.g. interior of tubes; Infiltration of porous substrates} - C23C 14/185: {by cathodic sputtering} - C23C 14/223: {specially adapted for coating particles} - C02F 1/005: {Systems or processes based on supernatural or anthroposophic principles, cosmic or terrestrial radiation, geomancy or rhabdomancy} - C02F 1/283: {using coal, charred products, or inorganic mixtures containing them} - C02F 2103/04: for obtaining ultra-pure water - C02F 2201/006: Cartridges - C02F 2301/046: Recirculation with an external loop - C02F 2303/04: Disinfection - C02F 2305/08: Nanoparticles or nanotubes - C02F: TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (separation in general B01D; special arrangements on waterborne vessels of installations for treating water, waste water or sewage, e.g. for producing fresh water, B63J; adding materials to water to prevent corrosion C23F; treating radioactively-contaminated liquids G21F9/04; regeneration of reactants for recirculation into processes, see the relevant places for the processes) - A01N: PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF (preservation of food or foodstuff A23); BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES (preparations for medical, dental or toiletry purposes which kill or prevent the growth or proliferation of unwanted organisms A61K); PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS - C23C: COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL (making metal-coated products by extrusion B21C23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B21D39/00, B23K; metallising of glass C03C; metallising mortars, concrete, artificial stone, ceramics or natural stone C04B41/00; enamelling of, or applying a vitreous layer to, metals C23D; treating metal surfaces or coating of metals by electrolysis or electrophoresis C25D; single-crystal film growth C30B; by metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04) ## Abstract This product (10) for removing pollutants from a fluid includes, on the one hand, a porous body (12) having an outer and inner specific surface (14) and, on the other hand, a metallized layer (16), the thickness of which is at most nanoscale, covering at least part of the outer and inner specific surface (14) of the porous body (12). The metallized layer (16) includes at least a metal (Ag) bonded to the porous body (12) by chemical bonds (18) that result from the action of intramolecular forces. Further, the metallized layer (16) includes silicon (Si) also bonded to the porous body (12) by chemical bonds (18) resulting from the action of intramolecular forces. ## Claims ### Claim 1 A product for removing bacteria from a fluid, comprising: a porous body comprising a carbonaceous component and having an outer and inner specific surface; and a metallized layer a thickness of which never exceeds a few nanometers, covering at least part of the outer and inner specific surface of the porous body, the metallized layer including at least a metal bonded to the porous body by chemical bonds resulting from the action of intramolecular forces, wherein the metallized layer further includes silicon also bonded to the porous body by chemical bonds resulting from the action of intramolecular forces, and the metallized layer comprises, in interaction with the porous body, components that are carbides of metal silicides with chemical bonds between their carbon, metal and silicon atoms that result from the action of intramolecular forces, wherein the metal silicides are silver silicides or silicides of a metal whose atomic mass is greater than or equal to that of copper obtained by immersing the porous body into the plasma of an inert gas plasma deposition reactor with radiofrequency discharge and injecting metal and silicon into the plasma. ### Claim 2 (depends on 1) The product for removing bacteria from a fluid as claimed in claim 1, wherein at least part of the silicon is also bonded to at least part of the metal of the metallized layer by chemical bonds resulting from the action of intramolecular forces. ### Claim 3 (depends on 2) The product for removing bacteria from a fluid as claimed in claim 2, wherein said carbides of metal silicides are components that are revealed at an energy level approximately equal to 283 eV. ### Claim 4 (depends on 1) The product for removing bacteria from a fluid as claimed in claim 1, wherein said carbides of metal silicides are components that are revealed at an energy level approximately equal to 283 eV. ### Claim 5 (depends on 4) The product for removing bacteria from a fluid as claimed in claim 4, wherein the metallized layer further comprises components including carbon, silicon and metal atoms bonded together by covalent bonds. ### Claim 6 (depends on 4) The product for removing bacteria from a fluid as claimed in claim 4, wherein the porous body includes at least one element selected from the group consisting of carbon powder, graphite, activated carbon, sand and zeolite. ### Claim 7 (depends on 4) The product for removing bacteria from a fluid as claimed in claim 4, wherein the metallized layer partially covers the outer and inner specific surface of the porous body by the formation of aggregates. ### Claim 8 (depends on 1) The product for removing bacteria from a fluid as claimed in claim 1, wherein the porous body includes at least one element selected from the group consisting of carbon powder, graphite, activated carbon, sand and zeolite. ### Claim 9 (depends on 1) The product for removing bacteria from a fluid as claimed in claim 1, wherein the metallized layer partially covers the outer and inner specific surface of the porous body by the formation of aggregates. ### Claim 10 (depends on 1) The product for removing bacteria from a fluid as claimed in claim 1, wherein the product does not lose constituent parts when treating water. ### Claim 11 (depends on 1) The product for removing bacteria from a fluid as claimed in claim 1, wherein the product does not salt out nanoparticles when treating water. ### Claim 12 A method for obtaining a product for removing bacteria from a fluid, comprising: treating a porous body comprising a carbonaceous component and having an outer and inner specific surface in an inert gas plasma deposition reactor with radiofrequency discharge, by immersing the porous body into the inert gas plasma with a source of metal; and injecting said metal into the inert gas plasma, on at least part of the outer and inner specific surface of the porous body by bombarding ions of plasma's inert gas on the source of metal, so as to form a metallized layer, a thickness of which never exceeds a few nanometers, covering at least part of the outer and inner specific surface of the porous body, wherein the step of treating the porous body also comprises immersing the porous body into the inert gas plasma with a source of silicon and injecting said silicon, in the inert gas plasma with the metal, on said at least part of the outer and inner specific surface of the porous body by bombarding ions of plasma's inert gas on the source of silicon, so that the metallized layer comprises, in interaction with the porous body, components that are carbides of metal silicides with chemical bonds between their carbon, metal and silicon atoms that result from the action of intramolecular forces, wherein the metal silicides are silver silicides or silicides of a metal whose atomic mass is greater than or equal to that of copper. ### Claim 13 (depends on 12) The method for obtaining a product for removing bacteria from a fluid as claimed in claim 12, wherein the deposition reactor is a diode reactor with electrical power approximately equal to 10 kW, coupled to a RLC impedance matching-box, and in which the excitation temperature of the plasma is brought to between 5000 K and 7000 K during the treatment step. ### Claim 14 (depends on 12) The method for obtaining a product for removing bacteria from a fluid as claimed in claim 12, further comprising a preliminary step of functionalizing the porous body in a low pressure fluidized bed reactor, of between 5 and 500 Pa, with a cold inert gas plasma and with inductive discharge. ### Claim 15 (depends on 13) The method for obtaining a product for removing bacteria from a fluid as claimed in claim 13, further comprising a preliminary step of functionalizing the porous body in a low pressure fluidized bed reactor, of between 5 and 500 Pa, with a cold inert gas plasma and with inductive discharge. ### Claim 16 (depends on 12) The method for obtaining a product for removing bacteria from a fluid as claimed in claim 12, wherein the product does not lose constituent parts when treating water. ### Claim 17 (depends on 12) The method for obtaining a product for removing bacteria from a fluid as claimed in claim 12, wherein the product does not salt out nanoparticles when treating water. ### Claim 18 A product for removing E. coli from a fluid, comprising: a porous body comprising a carbonaceous component and having an outer and inner specific surface; and a metallized layer a thickness of which never exceeds a few nanometers, covering at least part of the outer and inner specific surface of the porous body, the metallized layer including at least a metal bonded to the porous body by chemical bonds resulting from the action of intramolecular forces, wherein the metallized layer further includes silicon also bonded to the porous body by chemical bonds resulting from the action of intramolecular forces, and the metallized layer comprises, in interaction with the porous body, components that are carbides of metal silicides with chemical bonds between their carbon, metal and silicon atoms that result from the action of intramolecular forces, wherein the metal silicides are silver silicides or silicides of a metal whose atomic mass is greater than or equal to that of copper obtained by immersing the porous body into the plasma of an inert gas plasma deposition reactor with radiofrequency discharge and injecting metal and silicon into the plasma.