Hollow metal nanoparticle, catalyst including same, and method for manufacturing hollow metal nanoparticle

A technology of metal nanoparticles and metal ions, which is applied in the direction of metal/metal oxide/metal hydroxide catalysts, catalyst activation/preparation, chemical instruments and methods, etc., can solve the environmental pollution of organic solvents, high cost, and difficulty in synthesizing nano Particles and other problems, to achieve the effect of simple process and large specific surface area

Inactive Publication Date: 2017-03-08
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing methods have problems in that it is difficult to synthesize nanoparticles with uniform size and shape, or the use of organic solvents leads to environmental pollution, and high cost, etc.
For these various reasons, it is difficult to economically mass-produce high-quality nanoparticles

Method used

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  • Hollow metal nanoparticle, catalyst including same, and method for manufacturing hollow metal nanoparticle
  • Hollow metal nanoparticle, catalyst including same, and method for manufacturing hollow metal nanoparticle
  • Hollow metal nanoparticle, catalyst including same, and method for manufacturing hollow metal nanoparticle

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preparation example Construction

[0072] The method of preparing metal nanoparticles according to one embodiment of the present specification does not utilize a reduction potential difference, and thus has an advantage of not needing to consider a reduction potential between a first metal ion and a second metal ion forming a shell. The preparation method of the present specification utilizes the electric charges in metal ions, and therefore is simpler than the existing method of preparing metal nanoparticles by using a reduction potential difference. Therefore, the method for producing metal nanoparticles of the present specification is advantageous for large-scale production, and can produce metal nanoparticles at low cost. In addition, the method does not utilize a reduction potential difference, and thus has an advantage that a variety of metal salts can be used due to less restrictions on metal salts used compared to existing methods for producing metal nanoparticles.

[0073] This specification provides h...

Embodiment 1

[0108] Ni(NO 3 ) 2 、K 2 PtCl 4 , trisodium citrate, and ammonium lauryl sulfate (ALS) were dissolved in water, and the resultant was stirred for 30 minutes. Here, the molar ratio of Ni precursor to Pt precursor is 3:1, and the ALS is twice the critical micelle concentration (CMC). After stirring for 30 minutes, the reducing agent NaBH was added thereto 4 , and allow the resultant to react for more than 15 minutes.

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Abstract

The present specification relates to a method for manufacturing a hollow metal nanoparticle and a hollow metal nanoparticle manufactured by the method, the method comprising the steps of: 1) preparing a composition comprising two or more types of metal salts, one or more types of ionic surfactants, a surface stabilizer, and a solvent in an air atmosphere; and 2) adding a reductant into the composition in an air atmosphere. Additionally, the present invention relates to a hollow metal nanoparticle and a catalyst including the hollow metal nanoparticle, the hollow metal nanoparticle comprising: a hollow core portion; a shell portion including a first metal and a second metal; and a hollow space formed from the outer surface of the shell portion to the hollow core, wherein the ratio between the content of the first metal and the content of the second metal in the shell portion is larger than or equal to 1:3 and is smaller than or equal to 1:20.

Description

technical field [0001] This application claims priority and benefit from Korean Patent Application No. 10-2014-0127943 filed with the Korean Intellectual Property Office on September 24, 2014, the entire contents of which are incorporated herein by reference. [0002] The present specification relates to hollow metal nanoparticles, catalysts comprising the hollow metal nanoparticles, and methods of preparing hollow metal nanoparticles. Background technique [0003] Nanoscale nanoparticles are particles with a nanoscale particle size, and due to the quantum confinement effect and larger specific surface area, where the energy required for electron transfer varies with the size of the substance, it behaves differently from a substance in a bulk state Completely different optical, electrical and magnetic characteristics. Therefore, due to these characteristics, their applications in the field of catalysts, fields of electromagnetic fields, fields of optics, and fields of medic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/02B01J23/00B01J37/16
CPCB01J37/16B01J13/02B01J13/22B01J35/026B01J35/08B01J37/0018H01M4/92B01J23/892B01J35/0013Y02E60/50B01J23/00B01J23/007B01J23/42B01J23/755B01J13/08B01J37/0072B01J37/04
Inventor 方晸业黃教贤赵俊衍金相勋金洸贤崔兰
Owner LG CHEM LTD
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