IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0546755
(2009-08-25)
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등록번호 |
US-8182800
(2012-05-22)
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발명자
/ 주소 |
|
출원인 / 주소 |
- Kimberly-Clark Worldwide, Inc.
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
44 |
초록
▼
This invention relates to high surface area materials, such as nanoparticles, that are coated with metal ions. These modified nanoparticles have active sites that bind various gases and/or odorous compounds, thereby removing these compounds from a medium such as air or water. Metal ions are adsorbed
This invention relates to high surface area materials, such as nanoparticles, that are coated with metal ions. These modified nanoparticles have active sites that bind various gases and/or odorous compounds, thereby removing these compounds from a medium such as air or water. Metal ions are adsorbed onto the surface of the nanoparticle and bound strongly to the surface. By selection of the metal ion, specific gaseous compounds and/or odorous compounds can be targeted and removed efficiently and effectively from both aqueous phase and from the air. The modified nanoparticles are useful in numerous article of manufacture for industrial and consumer use.
대표청구항
▼
1. An article of manufacture, comprising: a composition for neutralizing odor, the composition comprising a nanoparticle having a diameter of less than 500 nanometers, a surface area of at least about 500 square meters/gram, and a first Zeta Potential of about −1 to −50 millivolts, the nanoparticle
1. An article of manufacture, comprising: a composition for neutralizing odor, the composition comprising a nanoparticle having a diameter of less than 500 nanometers, a surface area of at least about 500 square meters/gram, and a first Zeta Potential of about −1 to −50 millivolts, the nanoparticle comprising silica, titanium dioxide, gold, zinc oxide, polystyrene, or combinations thereof,wherein at least one metal ion is adsorbed onto the nanoparticle, the at least one metal ion selected from the group consisting of a copper ion, a silver ion, a gold ion, and combinations thereof,wherein the nanoparticle and at least one adsorbed metal ion is capable of binding at least one odorous compound. 2. The article of manufacture of claim 1, further comprising a second higher Zeta Potential after adsorption of the at least one metal ion onto the nanoparticle. 3. The article of manufacture of claim 1, wherein the at least one odorous compound comprises a compound selected from the group consisting of sulfur containing compounds, nitrogen containing compounds, carboxylic acids, alcohols, aliphatic aldehydes, aliphatic ketones, and combinations thereof. 4. The article of manufacture of claim 1, wherein the nanoparticle is a silica nanoparticle; andwherein the at least one metal ion comprises a plurality of copper ions, wherein each of the adsorbed plurality of copper ions is an active site on a surface of the silica nanoparticle for binding odorous compounds to the nanoparticle surface. 5. An article of manufacture, comprising: a composition for removing gaseous compounds, the composition comprising a nanoparticle having a diameter of less than 500 nanometers, a surface area of greater than 200 square meters/gram, and a first Zeta Potential of about 10 to 40 millivolts, the nanoparticle comprising alumina, magnesium oxide, or combinations thereof,wherein at least one metal ion or metal ion complex is adsorbed onto the nanoparticle, the metal ion complex selected from the group consisting of permanganate ion,wherein the nanoparticle and at least one adsorbed metal ion or metal ion complex is capable of binding at least one gaseous compound. 6. The article of manufacture of claim 5, wherein the nanoparticle further comprises a second lower Zeta Potential after adsorption of the at least one metal ion or metal ion complex onto the nanoparticle. 7. The article of manufacture of claim 5, wherein the nanoparticle comprises a surface area of at least about 500 square meters/gram. 8. The article of manufacture of claim 5, wherein the at least one gaseous compound comprises a compound selected from the group consisting of ethylene gas, carvone, terpenoids, and combinations thereof. 9. An article of manufacture, comprising: a composition for removal of gaseous or odorous compounds comprising a first modified nanoparticle, the first modified nanoparticle include a nanoparticle comprising a positive Zeta Potential, the nanoparticle further comprising alumina, magnesium oxide, or combinations thereof, a diameter of less than 500 nanometers, and a surface area of at least about 200 square meters/gram, the first modified nanoparticle further including at least one negatively charged metal ion complex adsorbed onto the nanoparticle, the at least one negatively charged metal ion complex selected from the group consisting of permanganate ion,wherein the composition further comprises a second modified nanoparticle, the second modified nanoparticle including a nanoparticle comprising a negative Zeta Potential and at least one positively charged metal ion adsorbed onto the nanoparticle,wherein the first modified nanoparticle is capable of binding a first gaseous or odorous compound and the second modified nanoparticle is capable of binding a second gaseous compound. 10. The article of manufacture of claim 9, wherein the second modified nanoparticle includes a nanoparticle comprising silica, titanium dioxide, gold, zinc oxide, polystyrene, and combinations thereof; and wherein the at least one positively charged metal ion comprises a metal ion selected from the group consisting of copper ion, silver ion, gold ion, iron ion, and combinations thereof. 11. An article of manufacture, comprising: a modified nanoparticle comprising a nanoparticle having a diameter of less than 500 nanometers and a surface area of at least about 500 square meters/gram, the nanoparticle comprising silica, alumina, magnesium oxide, titanium dioxide, iron oxide, gold, zinc oxide, copper oxide, polystyrene, or combinations thereof; and at least one metal ion or metal ion complex adsorbed onto the nanoparticle material, the at least one metal ion or metal ion complex comprising an ion or ion complex selected from the group consisting of a copper ion, a silver ion, a gold ion, a permanganate ion, an iron ion, and combinations thereof;wherein the nanoparticle comprises a first Zeta Potential before adsorption of the metal ion or metal ion complex and a second Zeta Potential after adsorption, wherein the difference between the first Zeta Potential and the second Zeta Potential is at least about 5.0 millivolts;wherein the modified nanoparticle is capable of binding at least one odorous or gaseous compound to the modified nanoparticle. 12. The article of manufacture of claim 11, wherein the second Zeta Potential is determined by an add-on amount of adsorbed metal ions. 13. The article of manufacture of claim 11, wherein the nanoparticle comprises a first Zeta Potential of about 1 to 70 millivolts. 14. The article of manufacture of claim 11, wherein the nanoparticle comprises a first Zeta Potential of about −1 to −50 millivolts. 15. The article of manufacture of claim 11, wherein the nanoparticle is a silica nanoparticle; andwherein the at least one metal ion comprises a plurality of copper ions, wherein each of the adsorbed plurality of copper ions is an active site on a surface of the silica nanoparticle for binding odorous compounds to the nanoparticle surface. 16. The article of manufacture of claim 11, wherein the modified nanoparticle is adsorbed onto the article of manufacture by an electric potential difference between the modified nanoparticle and the article of manufacture. 17. The article of manufacture of claim 11, wherein the article of manufacture comprises an absorbent article. 18. The article of manufacture of claim 17, wherein the absorbent article comprises a diaper. 19. The article of manufacture of claim 17, wherein the absorbent article comprises a feminine hygiene product. 20. The article of manufacture of claim 11, wherein the article of manufacture comprises a paper towel. 21. The article of manufacture of claim 11, wherein the article of manufacture comprises a household air freshener. 22. The article of manufacture of claim 11, wherein the article of manufacture comprises an oral hygiene product. 23. The article of manufacture of claim 11, wherein the article of manufacture comprises a wipe. 24. The article of manufacture of claim 11, wherein the article of manufacture comprises a fibrous cloth. 25. The article of manufacture of claim 11, wherein the article of manufacture comprises an air filter. 26. The article of manufacture of claim 11, wherein the article of manufacture comprises an odor adsorbing powder.
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