Method of producing hydrogen peroxide using nanostructured bismuth oxide

Patent metadata

Field	Value
Publication number	US-11807948-B2
Application number	US-202016829777-A
Country	US
Kind code	B2
Filing date	Mar 25, 2020
Priority date	Oct 3, 2019
Publication date	Nov 7, 2023
Grant date	Nov 7, 2023

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.

First claim

We claim:

1. A method of producing hydrogen peroxide using nanostructured bismuth oxide, comprising the steps of:
immersing an anode and a cathode in an alkaline solution saturated with oxygen in an electrolytic cell, the cathode being a conducting substrate having a surface layer of nanostructured oxygen-deficient bismuth oxide of formula Bi 2 O 3-x , wherein x is greater than 0 and less than 3;
establishing an electrical potential across the cathode and the anode to initiate reduction of the oxygen at the cathode, thereby producing hydrogen peroxide.

2. The method of producing hydrogen peroxide according to claim 1 , wherein the surface layer of said cathode comprises a film of Bi 2 O 3-x including nanosize dendritic structures formed by the Bi 2 O 3-x .

3. The method of producing hydrogen peroxide according to claim 1 , wherein the alkaline solution comprises NaOH solution saturated with oxygen.

4. The method of producing hydrogen peroxide according to claim 1 , wherein the alkaline solution comprises 0.1 M NaOH solution saturated with oxygen.

Assignees

• Univ King Saud

Inventors

• Shaddad Maged N
• Arunachalam Prabhakarn
• Almayouf Abdullah M

Classifications

• C25B1/30 Primary

  Peroxides · CPC title

• C25B11/051

  Electrodes formed of electrocatalysts on a substrate or carrier · CPC title

• C25B11/067

  Inorganic compound e.g. ITO, silica or titania · CPC title

• C25B11/069

  consisting of at least one single element and at least one compound; consisting of two or more compounds · CPC title

• C25B11/077

  the compound being a non-noble metal oxide · CPC title