Catalyst for generating hydrogen peroxide induced by temperature difference and method for environmental disinfection using same

Patent metadata

Field	Value
Publication number	US-12214098-B2
Application number	US-202117522875-A
Country	US
Kind code	B2
Filing date	Nov 9, 2021
Priority date	Aug 16, 2021
Publication date	Feb 4, 2025
Grant date	Feb 4, 2025

Abstract

A catalyst adapted for generating hydrogen peroxide induced by a temperature difference and a method for environmental disinfection using the same are provided. The catalyst includes a thermoelectric material distributed on a substrate. The thermoelectric material induces a reaction between water vapor and oxygen contained in the air through a temperature difference to generate hydrogen peroxide, to serve a sterilization function through the hydrogen peroxide generated. The method for environmental disinfection using the catalyst includes the following. The catalyst is placed in an environment with a temperature difference. The catalyst is caused to induce a reaction between water vapor and oxygen contained in air through the temperature difference to generate hydrogen peroxide without applying power, and serve a sterilization function through the hydrogen peroxide generated.

First claim

What is claimed is:

1. A catalyst for generating hydrogen peroxide induced by a temperature difference, the catalyst comprising:
a plurality of thermoelectric materials, being distributed on a substrate and inducing a reaction between water vapor and oxygen contained in air through a temperature difference to generate hydrogen peroxide (H 2 O 2 ) to serve a sterilization function through the hydrogen peroxide generated,
wherein in a top view, the plurality of thermoelectric materials are independently dispersed on the substrate.

2. The catalyst as described in claim 1 , wherein a form of the thermoelectric material comprises a nanomaterial or a bulk.

3. The catalyst as described in claim 2 , wherein the nanomaterial comprises a nanoparticle, a nanoplate, or a nanowire.

4. The catalyst as described in claim 1 , wherein the thermoelectric material is at least one material selected from a group consisting of a metal composite oxide, a polymer, a silicide, skutterudite, a Half-Heusler alloy, and a compound containing tellurium (Te).

5. The catalyst as described in claim 4 , wherein the thermoelectric material comprises bismuth telluride (Bi 2 Te 3 ), antimony telluride (Sb 2 Te 3 ), or lead telluride (PbTe).

6. The catalyst as described in claim 1 , wherein the substrate comprises a sheet substrate, a porous substrate, or a mesh substrate.

7. The catalyst as described in claim 1 , wherein a concentration of the hydrogen peroxide generated is modulated through a content of the thermoelectric material and/or a magnitude of the temperature difference.

8. The catalyst as described in claim 1 , wherein the thermoelectric material is formed on the substrate by coating, spraying, or soaking.

9. A method for environmental disinfection comprising:
providing a catalyst for generating hydrogen peroxide induced by a temperature difference, wherein the catalyst comprises:
a plurality of thermoelectric materials being distributed on a substrate, wherein in a top view, the plurality of thermoelectric materials are independently dispersed on the substrate;

placing the catalyst in an environment with the temperature difference; and
causing the catalyst to induce a reaction between water vapor and oxygen contained in air through the temperature difference to generate the hydrogen peroxide without applying power, and serve a sterilization function through the hydrogen peroxide generated.

10. The method as described in claim 9 , wherein the environment with the temperature difference comprises an air outlet of an air conditioner, a heater, a fan, or a stove.

11. The method as described in claim 9 , wherein the environment with the temperature difference comprises a surface of a mask.

12. The method as described in claim 9 , wherein the environment with the temperature difference comprises an exterior wall or a window of a building.

Assignees

• Univ Nat Tsing Hua

Inventors

• Lin zong-hong
• Lin Yu-Jiung
• Khan Imran

Classifications

• A61L2103/75

  Room floors or walls · CPC title

• A61L2103/50

  Textiles, e.g. bedwear or towels · CPC title

• B01J2235/30

  Scanning electron microscopy; Transmission electron microscopy · CPC title

• B01J2235/00

  Indexing scheme associated with group B01J35/00, related to the analysis techniques used to determine the catalysts form or properties · CPC title

• B01J2235/15

  X-ray diffraction · CPC title