Microorganism concentration agent and method of making
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61K-033/24
C12Q-001/02
C12Q-001/24
C12N-011/14
B01J-020/02
B01J-020/06
B01J-020/14
B01J-020/32
C12N-001/02
C12Q-001/04
출원번호
US-0023782
(2013-09-11)
등록번호
US-8951575
(2015-02-10)
발명자
/ 주소
Kshirsagar, Manjiri T.
Kshirsagar, Tushar A.
Wood, Thomas E.
출원인 / 주소
3M Innovative Properties Company
대리인 / 주소
Pishko, Adrian L.
인용정보
피인용 횟수 :
0인용 특허 :
20
초록▼
A concentration agent for capture of microorganisms, including diatomaceous earth bearing, on at least a portion of its surface, a surface treatment comprising a surface modifier comprising titanium dioxide, fine-nanoscale gold or platinum, or a combination thereof, and methods for making the concen
A concentration agent for capture of microorganisms, including diatomaceous earth bearing, on at least a portion of its surface, a surface treatment comprising a surface modifier comprising titanium dioxide, fine-nanoscale gold or platinum, or a combination thereof, and methods for making the concentration agent.
대표청구항▼
1. A concentration agent comprising a particulate support selected from diatomaceous earth, metal oxide-modified diatomaceous earth, and combinations thereof, the particulate support bearing, on at least a portion of its surface, a surface treatment comprising titanium dioxide, fine-nanoscale gold o
1. A concentration agent comprising a particulate support selected from diatomaceous earth, metal oxide-modified diatomaceous earth, and combinations thereof, the particulate support bearing, on at least a portion of its surface, a surface treatment comprising titanium dioxide, fine-nanoscale gold or platinum, or a combination thereof, wherein when the surface treatment is fine-nanoscale gold or platinum or a combination thereof, at least a portion of the surface treatment has all dimensions in the range of up to 3 nanometers, wherein the concentration agent comprises a negative zeta potential when suspended in water. 2. The concentration agent of claim 1, wherein the surface treatment is titanium dioxide. 3. The concentration agent of claim 1, wherein the surface treatment is fine-nanoscale gold or platinum, or a combination thereof. 4. The concentration agent of claim 1, wherein the metal oxide of the metal oxide-modified diatomaceous earth is selected from ferric oxide, titanium dioxide, zinc oxide, aluminum oxide, and combinations thereof; with the proviso that if the metal oxide is titanium dioxide, then the surface treatment is fine-nanoscale gold or platinum, or a combination thereof. 5. An article comprising the concentration agent of claim 1 having at least one microorganism strain bound to the concentration agent. 6. A method of making a concentration agent according to claim 2, the method comprising: (a) providing a particulate support selected from diatomaceous earth, metal oxide-modified diatomaceous earth, and combinations thereof;(b) providing a precursor compound comprising a hydrolysable titanium dioxide precursor;(c) combining the particulate support and the precursor compound; and(d) hydrolyzing the precursor compound such that titanium dioxide is deposited on the particulate support. 7. The method of claim 6, further comprising heating the particulate support having the titanium dioxide deposited thereon at a temperature in a range from 250° C. to 650° C. 8. The method of claim 6, wherein the metal oxide of the metal oxide-modified diatomaceous earth is selected from ferric oxide, zinc oxide, aluminum oxide, and combinations thereof. 9. A method of making a concentration agent according to claim 3, the method comprising: (a) providing a particulate support selected from diatomaceous earth, metal oxide-modified diatomaceous earth, and combinations thereof; and(b) depositing fine-nanoscale gold or platinum on the particulate support by physical deposition. 10. The method of claim 9, wherein the metal oxide of the metal oxide-modified diatomaceous earth is selected from ferric oxide, titanium dioxide, zinc oxide, aluminum oxide, and combinations thereof; with the proviso that if the metal oxide is titanium dioxide, then the surface treatment is fine-nanoscale gold or platinum, or a combination thereof. 11. The concentration agent of claim 3, wherein at least a portion of the surface treatment comprises ultra-nanoscale gold. 12. The concentration agent of claim 11, wherein at least a portion of the surface treatment has all dimensions in the range of less than 1.5 nanometers. 13. The concentration agent of claim 1, wherein the diatomaceous earth comprises diatomaceous earth from which organic residues have been removed. 14. The concentration agent of claim 1, wherein the diatomaceous earth comprises diatomaceous earth from which residual water has been removed.
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