# US 12,214,098 B2 · Catalyst for generating hydrogen peroxide induced by temperature difference and method for environmental disinfection using same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,214,098 B2 - Document ID: US12214098B2 - Status: Granted - Kind: B2 - Application number: 17/522,875 - Filed: 2021-11-09 - Published: 2023-02-16 - Granted: 2025-02-04 - Earliest claimed: 2021-08-16 - Assignees: National Tsing Hua University - Applicants: National Tsing Hua University - Inventors: Zong-Hong Lin; Yu-Jiung Lin; Imran Khan - Web page: https://patentgrep.com/patent/US12214098B2 ## CPC - A61L 2/208: Hydrogen peroxide - A61L 2/26: Accessories - A61L 9/015: using gaseous or vaporous substances, e.g. ozone (A61L9/20 takes precedence {; evaporation in general B01B1/005}) - B01J 21/063: {Titanium; Oxides or hydroxides thereof} - B01J 27/0573: {Selenium; Compounds thereof} - B01J 27/0576: {Tellurium; Compounds thereof} - B01J 31/06: containing polymers {(organometallic polymers B01J31/123; polymer-bound organometallic complexes B01J31/165; coordination polymers B01J31/1691)} - B01J 35/39: Photocatalytic properties - B01J 35/54: Bars or plates - A61L 2103/50: Textiles, e.g. bedwear or towels - A61L 2103/75: Room floors or walls - A61L 2202/11: Apparatus for generating biocidal substances, e.g. vaporisers, UV lamps - A61L 2209/211: Use of hydrogen peroxide, liquid and vaporous - B01J 2235/00: Indexing scheme associated with group B01J35/00, related to the analysis techniques used to determine the catalysts form or properties - B01J 2235/15: X-ray diffraction - B01J 2235/30: Scanning electron microscopy; Transmission electron microscopy - A61L: METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES (preservation of bodies or disinfecting characterised by the agents employed A01N; preserving, e.g. sterilising, food or foodstuffs A23; preparations for medical, dental or toiletry purposes A61K) - B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS ## 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. ## Claims ### Claim 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 (H2O2) 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. ### Claim 2 (depends on 1) The catalyst as described in claim 1, wherein a form of the thermoelectric material comprises a nanomaterial or a bulk. ### Claim 3 (depends on 2) The catalyst as described in claim 2, wherein the nanomaterial comprises a nanoparticle, a nanoplate, or a nanowire. ### Claim 4 (depends on 1) 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). ### Claim 5 (depends on 4) The catalyst as described in claim 4, wherein the thermoelectric material comprises bismuth telluride (Bi2Te3), antimony telluride (Sb2Te3), or lead telluride (PbTe). ### Claim 6 (depends on 1) The catalyst as described in claim 1, wherein the substrate comprises a sheet substrate, a porous substrate, or a mesh substrate. ### Claim 7 (depends on 1) 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. ### Claim 8 (depends on 1) The catalyst as described in claim 1, wherein the thermoelectric material is formed on the substrate by coating, spraying, or soaking. ### Claim 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. ### Claim 10 (depends on 9) 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. ### Claim 11 (depends on 9) The method as described in claim 9, wherein the environment with the temperature difference comprises a surface of a mask. ### Claim 12 (depends on 9) The method as described in claim 9, wherein the environment with the temperature difference comprises an exterior wall or a window of a building.