Metal catalyst, method for manufacturing the metal catalyst and electrochemical reduction method

Patent metadata

Field	Value
Publication number	US-2017073828-A1
Application number	US-201615360991-A
Country	US
Kind code	A1
Filing date	Nov 23, 2016
Priority date	Apr 3, 2013
Publication date	Mar 16, 2017
Grant date	—

Abstract

This invention relates to a metal catalyst, a manufacturing method of the metal catalyst, and an electrochemical reduction method.
The metal catalyst is manufactured by a method comprising providing a conductor to one side of an insulator, providing a fluid including a metal ion and an electron mediator to the other side of the insulator and providing a voltage to the conductor.
The electrochemical reduction method comprises providing a conductor to one side of an insulator, providing a fluid including reduction material and an electron mediator to the other side of the insulator and providing a voltage to the conductor.

First claim

What is claimed is:

1 . A method comprising:
providing a conductor to one side of an insulator; providing a fluid including a metal ion and an electron mediator to the other side of the insulator; and providing a voltage to the conductor.

2 . The method of claim 1 ,
wherein the insulator comprises a functional group reacting and combining with the metal ion at a surface of the insulator contacting with the solution.

3 . A method, comprising:
providing a conductor to one side of an insulator; providing a fluid including reduction material and an electron mediator to the other side of the insulator; and providing a voltage to the conductor.

4 . The method of claim 3 ,
wherein the electron mediator moves into the insulator by the voltage and receives electrons from the conductor and provides the electrons to the reduction material.

5 . The method of claim 3 ,
wherein the electron mediator comprises one or more chosen from a hydrogen ion, a hydrogen atom and a hydrogen molecule.

6 . The method of claim 3 ,
wherein the fluid comprises a solution or a gas, the solution comprises an aqueous solution or an organic solution, and the gas comprises hydrogen gas.

7 . The method of claim 6 ,
wherein an electric current flows in the insulator by the voltage, and the size of the electric current is adjusted by a pH of the solution.

8 . The method of claim 3 ,
wherein the conductor comprises a semiconductor or a metal doped by an n-type dopant or a p-type dopant.

9 . The method of claim 3 ,
wherein the insulator is a dielectric layer, and the insulator comprises a semiconductor oxide, a metal oxide, a semiconductor nitride, a metal nitride or a polymer.

10 . The method of claim 3 ,
wherein the insulator has a thickness of about 0.5 nm to about 100 μm.

Assignees

• Univ Seoul Nat R & Db Found

Inventors

• Chung Taekdong
• Lee Jinyoung

Classifications

• B01J35/45

  Nanoparticles · CPC title

• B01J2235/30

  Scanning electron microscopy; Transmission electron microscopy · CPC title

• B01J35/70

  characterised by their crystalline properties, e.g. semi-crystalline (catalysts comprising carbon B01J21/18; molecular sieves B01J29/00) · CPC title

• C25C1/20 Primary

  of noble metals · CPC title

• C25C7/00

  Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells (for the production of aluminium C25C3/06 - C25C3/22) · CPC title