Adsorbent for adsorbing virus and/or bacterium, carbon/polymer composite and adsorbent sheet

Patent metadata

Field	Value
Publication number	US-9782743-B2
Application number	US-201615137351-A
Country	US
Kind code	B2
Filing date	Apr 25, 2016
Priority date	Feb 21, 2011
Publication date	Oct 10, 2017
Grant date	Oct 10, 2017

Abstract

[Object]To provide an adsorbent, an adsorbent sheet, and a carbon/polymer composite for adsorbing a virus having further improved virus adsorption capability.
[Solving Means]
An adsorbent for adsorbing a virus according to the present invention has a specific surface area value as measured by the nitrogen BET method of 10 m 2 /g or more and a pore volume as measured by the BJH method of 0.1 cm 3 /g or more. An adsorbent sheet for adsorbing a virus according to the present invention includes a porous carbonaceous material having a specific surface area value as measured by the nitrogen BET method of 10 m 2 /g or more and a pore volume as measured by the BJH method of 0.1 cm 3 /g or more. A carbon/polymer composite for adsorbing a virus according to the present invention includes a porous carbonaceous material having a specific surface area value as measured by the nitrogen BET method of 10 m 2 /g or more and a pore volume as measured by the BJH method of 0.1 cm 3 /g or more; and a binder.

First claim

The invention claimed is:

1. A method, comprising:
providing a porous carbonaceous material comprising pores having diameters in a range from 1×10 −9 m to 5×10 −7 m, wherein the porous carbonaceous material has a specific surface area of 10 m 2 /g or more as measured by a nitrogen BET method, a total pore volume of 0.1 cm 3 /g or more as determined by Non Localized Density Functional Theory, and one or more peaks between 70 nm and 180 nm in a pore diameter distribution as determined by Non Localized Density Functional Theory; and
adsorbing a virus and/or a bacterium to the porous carbonaceous material.

2. The method according to claim 1 , wherein the porous carbonaceous material has at least one peak in a pore diameter distribution in a range from 3 nm to 20 nm as determined by Non Localized Density Functional Theory, and a ratio of the volume of pores with diameters in the range from 3 nm to 20 nm to the total pore volume of 0.2 or more.

3. The method according to claim 2 , wherein the porous carbonaceous material comprises mesopores having a pore diameter in a range of about 2 nm to about 50 nm and macropores having a pore diameter greater than about 50 nm.

4. The method according to claim 3 , wherein the porous carbonaceous material further comprises micropores having a pore diameter less than about 2 nm.

5. The method according to claim 1 , wherein the porous carbonaceous material has a pore volume of 0.5 cm 3 /g or more as measured by a BJH method.

6. The method according to claim 1 , wherein the porous carbonaceous material has a pore volume of 4.12 cm 3 /g or more as measured by a mercury intrusion method.

7. The method according to claim 1 , wherein the porous carbonaceous material has a pore volume of 0.515 cm 3 /g or more as measured by an MP method.

8. The method according to claim 1 , wherein:
the porous carbonaceous material is made from a plant-based material; and
the plant-based material comprises chaff, straws, coffee beans, tea leaves, sugar canes, corns, fruit peels, reeds, and/or Wakame seaweed stems.

9. A method, comprising:
providing a carbon/polymer composite, wherein the carbon/polymer composite comprises:
a porous carbonaceous material comprising pores having diameters in a range from 1×10 −9 m to 5×10 −7 m, wherein the porous carbonaceous material has a specific surface area of 10 m 2 /g or more as measured by a nitrogen BET method, a total pore volume of 0.1 cm 3 /g or more as determined by Non Localized Density Functional Theory, at least one peak in a pore diameter distribution in a range from 3 nm to 20 nm as determined by Non Localized Density Functional Theory, a ratio of the volume of pores with diameters in the range from 3 nm to 20 nm to the total pore volume of 0.2 or more, and one or more peaks between 70 nm and 180 nm in a pore diameter distribution as determined by Non Localized Density Functional Theory; and
a binder; and

adsorbing a virus and/or a bacterium to the carbon/polymer composite.

10. The method according to claim 9 , wherein the porous carbonaceous material comprises mesopores having a pore diameter in a range of about 2 nm to about 50 nm and macropores having a pore diameter greater than about 50 nm.

11. The method according to claim 10 , wherein the porous carbonaceous material further comprises micropores having a pore diameter less than about 2 nm.

12. The method according to claim 9 , wherein the porous carbonaceous material has a pore volume of 0.5 cm 3 /g or more as measured by a BJH method.

13. The method according to claim 9 , wherein the porous carbonaceous material has a pore volume of 4.12 cm 3 /g or more as measured by a mercury intrusion method.

14. The method according to claim 9 , wherein the porous carbonaceous material has a pore volume of 0.515 cm 3 /g or more as measured by an MP method.

15. The method according to claim 9 , wherein:
the porous carbonaceous material is made from a plant-based material; and
the plant-based material comprises chaff, straws, coffee beans, tea leaves, sugar canes, corns, fruit peels, reeds, and/or Wakame seaweed stems.

16. A method, comprising:
providing an adsorbent sheet, wherein the adsorbent sheet comprises:
a porous carbonaceous material comprising pores having diameters in a range from 1×10 −9 m to 5×10 −7 m, wherein the porous carbonaceous material has a specific surface area of 10 m 2 /g or more as measured by a nitrogen BET method, a total pore volume of 0.1 cm 3 /g or more as determined by Non Localized Density Functional Theory, at least one peak in a pore diameter distribution in a range from 3 nm to 20 nm as determined by Non Localized Density Functional Theory, a ratio of the volume of pores with diameters in the range from 3 nm to 20 nm to the total pore volume of 0.2 or more, and one or more peaks between 70 nm and 180 nm in a pore diameter distribution as determined by Non Localized Density Functional Theory; and
a support member; and

adsorbing a virus and/or a bacterium to the adsorbent sheet.

17. The method according to claim 16 , wherein the porous carbonaceous material comprises mesopores having a pore diameter in a range of about 2 nm to about 50 nm and macropores having a pore diameter greater than about 50 nm.

18. The method according to claim 17 , wherein the porous carbonaceous material further comprises micropores having a pore diameter less than about 2 nm.

19. The method according to claim 16 , wherein:
the porous carbonaceous material is made from a plant-based material; and
the plant-based material comprises chaff, straws, coffee beans, tea leaves, sugar canes, corns, fruit peels, reeds, and/or Wakame seaweed stems.

20. The method according to claim 16 , wherein the support member is composed of a non-woven fabric.

Assignees

• Sony Corp

Inventors

• Iida Hironori
• Yamanoi Shun
• Minatoya Machiko
• Tabata Seiichiro
• Yamada Shinichiro

Classifications

• C01B32/318

  characterised by the starting materials · CPC title

• B01J20/28057

  Surface area, e.g. B.E.T specific surface area · CPC title

• B01J20/28088

  Pore-size distribution · CPC title

• B01J20/28083

  being in the range 2-50 nm, i.e. mesopores · CPC title

• A61L2209/22

  Treatment by sorption, e.g. absorption, adsorption, chemisorption, scrubbing, wet cleaning · CPC title