Adsorbent for carbon dioxide and manufacturing method for the same

Patent metadata

Field	Value
Publication number	US-2016144339-A1
Application number	US-201514864210-A
Country	US
Kind code	A1
Filing date	Sep 24, 2015
Priority date	Nov 25, 2014
Publication date	May 26, 2016
Grant date	—

Abstract

Provided is an adsorbent for carbon dioxide, including: a graphene oxide layer having an interconnected network structure; and carbon nitride formed on the graphene oxide layer.

First claim

What is claimed is:

1 . An adsorbent for carbon dioxide comprising:
a graphene oxide layer having an interconnected network structure; and carbon nitride formed on the graphene oxide layer.

2 . The adsorbent for carbon dioxide of claim 1 , wherein the interconnected network structure is formed by gelling a solution in which the graphene oxide is dispersed.

3 . The adsorbent for carbon dioxide of claim 1 , wherein the carbon nitride has a graphitic structure.

4 . The adsorbent for carbon dioxide of claim 1 , the adsorbent for carbon dioxide is obtained by mixing the solution in which graphene oxide is dispersed with a nitrogen-containing carbon material, followed by gelling and heat treatment.

5 . The adsorbent for carbon dioxide of claim 3 , wherein the carbon nitride is a two-dimensional layered material including hexagonal heptazine(tris-s-triazine) units.

6 . The adsorbent for carbon dioxide of claim 1 , wherein the carbon nitride has a condensed polymer structure.

7 . The adsorbent for carbon dioxide of claim 6 , wherein the carbon nitride is bound to the graphene oxide layer in the form of monomers forming the polymer structure, and then condensed to form the polymer structure.

8 . A method for preparing an adsorbent for carbon dioxide comprising:
mixing a dispersion of graphene oxide with a dispersion of monomers containing nitrogen and carbon; gelling the resultant mixture; and heat treating the resultant gel to form carbon nitride derived from the monomers and provided on the network structure of the graphene oxide.

9 . The method for preparing an adsorbent for carbon dioxide of claim 8 , wherein the monomers are polymerized during the heat treatment step.

10 . The method for preparing an adsorbent for carbon dioxide of claim 9 , wherein the carbon nitride is a two-dimensional layered material including heptazine(tris-s-triazine) units organized in the form of hexagons and connected via a tertiary amine.

11 . The adsorbent for carbon dioxide manufactured by the method of claim 8 .

12 . The adsorbent for carbon dioxide manufactured by the method of claim 9 .

13 . The adsorbent for carbon dioxide manufactured by the method of claim 10 .

Assignees

• Korea Advanced Inst Sci & Tech

Inventors

• Kim Sang Ouk
• Oh Young Tak

Classifications

• B01J20/3078

  Thermal treatment, e.g. calcining or pyrolizing · CPC title

• B01J20/0259

  Compounds of N, P, As, Sb, Bi · CPC title

• B01J20/22 Primary

  comprising organic material · CPC title

• B01D2257/504

  Carbon dioxide · CPC title

• B01D53/02

  by adsorption, e.g. preparative gas chromatography {(solid sorbent compositions B01J20/00, preparation of inorganic compounds or elements C01)} · CPC title