High luminous silver nanoclusters doped with metal hydride, manufacturing method thereof, and electrochemical catalyst for hydrogen gas generation

Patent metadata

Field	Value
Publication number	US-12577693-B2
Application number	US-202217971741-A
Country	US
Kind code	B2
Filing date	Oct 24, 2022
Priority date	Oct 25, 2021
Publication date	Mar 17, 2026
Grant date	Mar 17, 2026

Abstract

Provided is a silver nanocluster doped with a metal hydride, a manufacturing method thereof, and an electrochemical catalyst for hydrogen gas generation. The silver nanocluster doped with the metal hydride has utility as an electrochemical catalyst, has a very low production cost compared to a conventional platinum (Pt) catalyst, and exhibits an equivalent or higher hydrogen gas generation effect.

First claim

What is claimed is:

1 . A silver nanocluster doped with a metal hydride satisfying the following Formula 1:
[MH X Ag 24 (SR) 18 ] 2−   [Formula 1]
wherein M is Ir, Ru, or Os; X is an integer according to the oxidation value of M; and SR is an organothiol-based ligand.

2 . The silver nanocluster of claim 1 , wherein MH X in Formula 1 is IrH, RuH 2 , or OsH 2 .

3 . The silver nanocluster of claim 1 , wherein the organothiol-based ligand in Formula 1 is C1-C30 alkanethiol, C1-C10 alkyl-substituted C1-C30 alkanethiol, C6-C30 arylthiol, or C1-C10 alkyl-substituted C6-C30 arylthiol.

4 . The silver nanocluster of claim 3 , wherein the organothiol-based ligand is C1-C4 alkyl-substituted C6-C12 arylthiol.

5 . The silver nanocluster of claim 1 , wherein a luminous yield of the silver nanocluster doped with the metal hydride is 100 times or more of the luminous yield of the silver nanocluster not doped with the metal hydride.

6 . A method for manufacturing a silver nanocluster doped with a metal hydride comprising:
a) preparing a reaction solution by reacting a silver precursor with an organothiol-based ligand compound; and b) adding a metal hydride precursor and a reducing agent to the reaction solution to manufacture a nanocluster satisfying the following Formula 1:
[MH X Ag 24 (SR) 18 ] 2−   [Formula 1]

wherein M is Ir, Ru, or Os; X is an integer according to an oxidation value of M; and SR is an organothiol-based ligand.

7 . The method of claim 6 , further comprising performing precipitation and separation with an aromatic solvent, after step b).

8 . The method of claim 6 , wherein a molar ratio of the silver precursor: the metal hydride precursor is 1:0.02 to 0.2.

9 . The method of claim 8 , wherein the molar ratio of the silver precursor: the metal hydride precursor is 1:0.05 to 0.15.

10 . The method of claim 6 , wherein the silver precursor is any one or two or more selected from the group consisting of AgNO 3 , AgBF 4 , AgCF 3 SO 3 , AgClO 4 , AgO 2 CCH 3 , and AgPF 6 .

11 . The method of claim 6 , wherein the metal hydride precursor is a halogenated hydrate of Ir, Ru, or Os.

12 . The method of claim 6 , wherein the reducing agent is one or two or more selected from triethylamine, oleylamine, carbon monoxide, and sodium borohydride.

13 . An electrochemical catalyst comprising the silver nanocluster doped with a metal hydride of claim 1 .

14 . The electrochemical catalyst of claim 13 , wherein the electrochemical catalyst is an electrochemical catalyst for hydrogen gas generation.

15 . A device for hydrogen gas generation comprising the electrochemical catalyst of claim 13 .

16 . The device for hydrogen gas generation of claim 15 , wherein the device for hydrogen gas generation includes:
a power supply; a working electrode and a counter electrode connected to the power supply; and an aqueous electrolyte in which the electrodes are impregnated, wherein the working electrode is coated with the electrochemical catalyst.

17 . A luminous body comprising the silver nanocluster doped with a metal hydride of claim 1 .

Assignees

• Univ Yonsei Iacf

Inventors

• Lee Dongil
• Yi Hanseok
• Han Sang Myeong

Classifications

• B22F9/24

  starting from liquid metal compounds, e.g. solutions · CPC title

• B22F2301/255

  Silver or gold · CPC title

• B22F1/054 Primary

  Nanosized particles · CPC title

• B22F2304/05

  Submicron size particles · CPC title

• C25B1/04

  by electrolysis of water · CPC title