Granted Patent B2

US 12,697,602 · App. 18/230,848 · Granted Aug 4, 2026

Inventor: Jaspreet S. Dhau (San Francisco, CA)

Assignee: Molekule Group, Inc.

B01J20/324B01J20/0259B01J20/0262B01J20/041B01J20/20B01J20/28083B01J20/28085B01J2220/42B82Y30/00

Abstract

Claims (14)

1 . A method comprising:

a. forming a slurry comprising porous carbon particles, a solvent, and an antibiological precursor;

b. reducing the antibiological precursor to form a reduced antibiological precursor by adding a reducing agent to the slurry, wherein the only byproducts from oxidation of the reducing agent are water or gas-phase at standard temperature and pressure;

c. after the antibiological precursor has been reduced, adding an oxidizing agent to the slurry to form coated carbon particles comprising antibiological nanoparticles dispersed on a surface of the porous carbon particles, wherein the oxidizing agent oxidizes the reduced antibiological precursor to form the antibiological nanoparticles;

wherein the antibiological precursor comprises selenium powder and the antibiological nanoparticles comprise selenium nanoparticles, wherein the reducing agent reduces the selenium powder into selenium anions, wherein the oxidizing agent oxidizes the selenium anions into the selenium nanoparticles.

2 . The method of claim 1 , wherein a sorption capacity of the coated carbon particles is substantially the same as the sorption capacity of the porous carbon particles.

3 . The method of claim 1 , further comprising sparging the slurry with carbon dioxide gas prior to adding the reducing agent.

4 . The method of claim 1 , further comprising functionalizing the porous carbon particles with a material that increases a VOC sorption capacity of the porous carbon particles.

5 . The method of claim 4 , wherein functionalizing the porous carbon particles does not substantially change an antibiological property of the coated carbon particles.

6 . The method of claim 1 , wherein the antibiological precursor further comprises copper nitrate and the antibiological nanoparticles further comprise copper oxide nanoparticles, wherein the reducing agent reduces the copper nitrate into copper nanoparticles, wherein the oxidizing agent oxidizes the copper nanoparticles into the copper oxide nanoparticles.

7 . The method of claim 6 , wherein the copper oxide nanoparticles comprise a mixture of copper (I) oxide and copper (II) oxide.

8 . The method of claim 1 , wherein the reducing agent comprises hydrazine hydrate.

9 . The method of claim 1 , wherein the antibiological nanoparticles comprise porous and nonporous nanoparticles.

10 . The method of claim 1 , wherein the porous carbon particles comprise activated carbon.

Assignments (6)

Continuity (2)

References Cited (280)