# US 11,898,255 B2 · Method of producing hydrogen peroxide using nanostructured bismuth oxide

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- Number: US 11,898,255 B2
- Document ID: US11898255B2
- Status: Granted
- Kind: B2
- Application number: 16/829,944
- Filed: 2020-03-25
- Published: 2021-04-08
- Granted: 2024-02-13
- Earliest claimed: 2019-10-03
- Assignees: King Saud University
- Applicants: King Saud University
- Inventors: Maged N. Shaddad; Prabhakarn Arunachalam; Abdullah M. Almayouf
- Web page: https://patentgrep.com/patent/US11898255B2

## CPC

- C25B 1/30: Peroxides
- C25B 11/051: Electrodes formed of electrocatalysts on a substrate or carrier
- C25B 11/052: Electrodes comprising one or more electrocatalytic coatings on a substrate
- C25B 11/063: Valve metal, e.g. titanium
- C25B 11/067: Inorganic compound e.g. ITO, silica or titania
- C25B 11/069: consisting of at least one single element and at least one compound; consisting of two or more compounds
- C25B 11/077: the compound being a non-noble metal oxide
- C25B 15/029: Concentration
- Y02P 20/133: Renewable energy sources, e.g. sunlight
- C25B: ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR (anodic or cathodic protection C23F13/00; single-crystal growth C30B)
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

The method of producing hydrogen peroxide using nanostructured bismuth oxide is an electrochemical process for producing hydrogen peroxide using a cathode formed as oxygen-deficient nanostructured bismuth oxide deposited as a film on the surface of a conducting substrate. An anode and the cathode are immersed in an alkaline solution saturated with oxygen in an electrolytic cell. An electrical potential is established across the cathode and the anode to initiate electrochemical reduction of the oxygen in the alkaline solution to produce hydrogen peroxide by oxygen reduction reaction.

## Claims

### Claim 1

An electrode for electrochemical production of hydrogen peroxide, comprising:
a conductive substrate having a surface; and
a metal oxide film disposed on the surface of the conductive substrate, the metal oxide being partially reduced so that the metal oxide has oxygen vacancies;
wherein said partially reduced metal oxide comprises oxygen-deficient bismuth oxide of formula Bi2O3-x, wherein x is greater than 0 and less than 3.