Sub-nanometric particles-metal organic framework complex including multi-shell hollow metal organic framework and subnanometric particles

Patent metadata

Field	Value
Publication number	US-11837733-B2
Application number	US-202117229594-A
Country	US
Kind code	B2
Filing date	Apr 13, 2021
Priority date	Jun 3, 2020
Publication date	Dec 5, 2023
Grant date	Dec 5, 2023

Abstract

The present disclosure relates to a sub-nanometric particles-metal organic framework complex including a multi-shell hollow metal organic framework (MOF) and sub-nanometric particles (SNPs), and a method of preparing the same.

First claim

We claim:

1. A sub-nanometric particles-metal organic framework (MOF) complex, comprising:
a hollow MOF; and
sub-nanometric particles (SNPs),
wherein the SNPs are embedded in pores of the hollow MOF, and
wherein the SNPs are metals.

2. The sub-nanometric particles-MOF complex of claim 1 ,
wherein the hollow MOF includes one or more MOF shells.

3. The sub-nanometric particles-MOF complex of claim 2 ,
wherein a number of the MOF shells is 1 to 10.

4. The sub-nanometric particles-MOF complex of claim 1 ,
wherein the hollow MOF stabilizes the SNPs by π-backbonding.

5. The sub-nanometric particles-MOF complex of claim 1 ,
wherein the SNPs transport electrons through hopping transport mechanism.

6. The sub-nanometric particles-MOF complex of claim 1 ,
wherein the SNPs are mononuclear SNPs.

7. The sub-nanometric particles-MOF complex of claim 1 ,
wherein the hollow MOF includes at least one selected from ZIF-8, ZIF-67, MOF-74, MIL-100, UIO-66 and MOF-867.

8. The sub-nanometric particles-MOF complex of claim 1 ,
wherein the SNPs include at least one selected from Mg, Ca, Sr, Ba, Mn, Fe, Co, Ni, Zn, and Cd.

9. The sub-nanometric particles-MOF complex of claim 1 ,
wherein the SNPs are contained in an amount of 0.001 part by weight to 20 parts by weight with respect to 100 parts by weight of the sub-nanometric particles-MOF complex.

10. An energy device, comprising a sub-nanometric particles-MOF complex of claim 1 .

11. The energy device of claim 10 ,
wherein the sub-nanometric particles-MOF complex has an improved catalytic activity by an increase in a number of active sites or an increase in a loaded amount of the SNPs, compared to a pure MOF, or by expression of both of them.

12. The energy device of claim 10 ,
wherein the energy device includes a lithium-air battery, a lithium-ion battery, a supercapacitor, a hydrolysis electrocatalyst or an electrocatalyst for oxygen reduction reaction.

13. The sub-nanometric particles-MOF complex of claim 1 ,
wherein the SNPs are dinuclear SNPs.

Assignees

• Korea Advanced Inst Sci & Tech

Inventors

• Kang Jeung Ku
• Choi Won Ho
• Moon Byeong Cheul
• Park Dong Gyu
• Choi Jae Won
• Kim Keon-Han

Classifications

• B01J35/45

  Nanoparticles · CPC title

• B01J35/52

  Hollow spheres · CPC title

• B01J35/53

  with a core-shell structure · CPC title

• B82Y30/00

  Nanotechnology for materials or surface science, e.g. nanocomposites · CPC title

• H01M4/9008 Primary

  Organic or organo-metallic compounds · CPC title