Palladium hydride having hcp crystal structure and preparation method thereof

Patent metadata

Field	Value
Publication number	US-11608276-B2
Application number	US-202017036726-A
Country	US
Kind code	B2
Filing date	Sep 29, 2020
Priority date	Feb 18, 2020
Publication date	Mar 21, 2023
Grant date	Mar 21, 2023

Abstract

According to an embodiment of the present invention, the method includes: (a) preparing a liquid cell containing a palladium precursor solution; (b) applying electron beams to the palladium precursor solution contained in the liquid cell; and (c) generating palladium hydride nanoparticles having the hcp crystal structure in the palladium precursor solution.

First claim

What is claimed is:

1. A method of preparing palladium hydride nanoparticles having a hexagonal close packing (hcp) crystal structure, the method comprising:
(a) preparing a liquid cell containing a palladium precursor solution;
(b) applying electron beams to the palladium precursor solution contained in the liquid cell; and
(c) generating the palladium hydride nanoparticles having the hcp crystal structure in the palladium precursor solution.

2. The method of claim 1 , wherein the liquid cell operates in a transmission electron microscope.

3. The method of claim 2 , wherein when the liquid cell is a graphene liquid cell (GLC) or a silicon nitride (Si 3 N) liquid cell, an electron beam dose rate in the step (b) is in the range of 5.0×10 −1 to 1.0×10 4 e − /(Å 2 ·s).

4. The method of claim 1 , wherein an acceleration voltage of the electron beams is in a range of 10 kV to 1000 kV.

5. The method of claim 1 , wherein a palladium precursor included in the palladium precursor solution has a hcp crystal structure.

6. The method of claim 1 , wherein a palladium precursor included in the palladium precursor solution is one selected from the group consisting of a palladium nitride, a palladium chloride, a palladium sulfide, a palladium acetate, a palladium acetylacetonate, a palladium cyanate, a palladium isopropyl oxide, a palladium butoxide, and any combination thereof.

7. The method of claim 1 , wherein the palladium hydride nanoparticles are nanoparticles of a compound represented by Formula 1 below:
PdH x (0< x≤ 2).  Formula 1

Assignees

• Korea Inst Sci & Tech

Inventors

• Chun Dong Won
• Yoo Sung Jong
• Hong Jaeyoung
• Park Hee-Young
• Lee Young-Su
• Suh Jin-Yoo
• Bae Jee-Hwan
• Cho Min Kyung

Classifications

• C01B6/02 Primary

  Hydrides of transition elements; Addition complexes thereof · CPC title

• B01J31/121

  Metal hydrides · CPC title

• B82Y40/00

  Manufacture or treatment of nanostructures · CPC title

• B82Y30/00

  Nanotechnology for materials or surface science, e.g. nanocomposites · CPC title

• C01P2002/90

  Other crystal-structural characteristics not specified above · CPC title