Method for fabricating hollow metal nano particles and hollow metal nano particles fabricated by the method

Patent metadata

Field	Value
Publication number	US-8992660-B2
Application number	US-201314344258-A
Country	US
Kind code	B2
Filing date	May 10, 2013
Priority date	May 11, 2012
Publication date	Mar 31, 2015
Grant date	Mar 31, 2015

Abstract

The present application provides a method for fabricating hollow metal nano particles and hollow metal nano particles fabricated by the same.

First claim

What is claimed is:

1. A method for fabricating hollow metal nano particles, the method comprising:
forming a solution by adding a first metal salt, a second metal salt, and a surfactant to a solvent; and
forming hollow metal nano particles by adding a reducing agent to the solution,
wherein the forming of the solution comprises forming a micelle by the surfactant, and surrounding an outer portion of the micelle with the first metal salt and the second metal salt, and
the forming of the hollow metal nano particles comprises forming the micelle region to a hollow form,
wherein a molar ratio of the first metal salt to the second metal salt in the solution is 1:5 to 10:1,
wherein the solvent is water,
wherein a concentration of the surfactant in the solution is one time to five times of a critical micelle concentration (CMC) to water, and the hollow metal nano particles have an average particle diameter of 30 nm or less.

2. The method of claim 1 , wherein a carbon number of the chains of the surfactant is 15 or less.

3. The method of claim 1 , wherein the surfactant is an anionic surfactant.

4. The method of claim 3 , wherein the anionic surfactant comprises NH 4 + , K + , Na + , or Li + as a counter ion.

5. The method of claim 3 , wherein the anionic surfactant is selected from the group consisting of potassium laurate, triethanolamine stearate, ammonium lauryl sulfate, lithium dodecyl sulfate, sodium lauryl sulfate, sodium dodecyl sulfate, alkyl polyoxyethylene sulfate, sodium alginate, dioctyl sodium sulfosuccinate, phosphatidyl glycerol, phosphatidyl inositol, phosphatidylserine, phosphatidic acid and salts thereof, glyceryl ester, sodium carboxymethylcellulose, bile acid and salts thereof, cholic acid, deoxycholic acid, glycocholic acid, taurocholic acid, glycodeoxycholic acid, alkyl sulfonate, aryl sulfonate, alkyl phosphate, alkyl sulfonate, stearic acid and salts thereof, calcium stearate, phosphate, sodium carboxymethyl cellulose, dioctyl sulfosuccinate, dialkyl ester of sodium sulfosuccinic acid, phospholipid and calcium carboxymethyl cellulose.

6. The method of claim 1 , wherein the surfactant is a cationic surfactant.

7. The method of claim 6 , wherein the cationic surfactant comprises I − , Br − , or Cl − as a counter ion.

8. The method of claim 6 , wherein the cationic surfactant is selected from the group consisting of quaternary ammonium compounds, benzalkonium chloride, cetyl trimethyl ammonium bromide, chitonic acid, lauryl dimethyl benzyl ammonium chloride, acyl carnitine hydrochloride, alkyl pyridinium halide, cetylpyridinium chloride, cationic lipids, polymethylmethacrylate trimethyl ammonium bromide, sulfonium compounds, polyvinylpyrrolidone-2-dimethylaminoethyl methacrylate dimethyl sulfate, hexadecyl trimethyl ammonium bromide, phosphonium compounds, quaternary ammonium compounds, benzyl-di(2-chloroethyl)ethyl ammonium bromide, coconut trimethyl ammonium chloride, coconut trimethyl ammonium bromide, coconut methyl dihydroxyethyl ammonium chloride, coconut methyl dihydroxyethyl ammonium bromide, decyl triethyl ammonium chloride, decyl dimethyl hydroxyethyl ammonium chloride, decyl dimethyl hydroxyethyl ammonium chloride bromide, C 12-15 -dimethyl hydroxyethyl ammonium chloride, C 12-15 -dimethyl hydroxyethyl ammonium chloride bromide, coconut dimethyl hydroxyethyl ammonium chloride, coconut dimethyl hydroxyethyl ammonium bromide, myristyl trimethyl ammonium methyl sulphate, lauryl dimethyl benzyl ammonium chloride, lauryl dimethyl benzyl ammonium bromide, lauryl dimethyl (ethenoxy) 4 ammonium chloride, lauryl dimethyl (ethenoxy) 4 ammonium bromide, N-alkyl (C 12-18 )dimethylbenzyl ammonium chloride, N-alkyl (C 14-18 )dimethyl-benzyl ammonium chloride, N-tetradecyldimethylbenzyl ammonium chloride monohydrate, dimethyl didecyl ammonium chloride, N-alkyl (C 12-14 )dimethyl 1-naphthylmethyl ammonium chloride, trimethylammonium halide alkyl -trimethylammonium salts, dialkyl-dimethylammonium salts, lauryl trimethyl ammonium chloride, ethoxylated alkyamidoalkyldialkylammonium salts, ethoxylated trialkyl ammonium salts, dialkylbenzene dialkylammonium chloride, N-didecyldimethyl ammonium chloride, N-tetradecyldimethylbenzyl ammonium chloride monohydrate, N-alkyl(C 12-14 ) dimethyl 1-naphthylmethyl ammonium chloride, dodecyldimethylbenzyl ammonium chloride, dialkyl benzenealkyl ammonium chloride, lauryl trimethyl ammonium chloride, alkylbenzyl methyl ammonium chloride, alkyl benzyl dimethyl ammonium bromide, C 12 trimethyl ammonium bromide, C 15 trimethyl ammonium bromide, C 17 trimethyl ammonium bromide, dodecylbenzyl triethyl ammonium chloride, polydiallyldimethylammonium chloride, dimethyl ammonium chloride, alkyldimethylammonium halogenide, tricetyl methyl ammonium chloride, decyltrimethylammonium bromide, dodecyltriethylammonium bromide, tetradecyltrimethylammonium bromide, methyl trioctylammonium chloride, POLYQUAT 10, tetrabutylammonium bromide, benzyl trimethylammonium bromide, choline ester, benzalkonium chloride, stearalkonium chloride, cetyl pyridinium bromide, cetyl pyridinium chloride, halide salts of quaternized polyoxyethylalkylamines, MIRAPOL Alkaquat, alkyl pyridinium salts, amine, amine salts, imide azolinium salts, protonated quaternary acrylamides, methylated quaternary polymers, cationic gua gum, benzalkonium chloride, dodecyl trimethyl ammonium bromide, triethanolamine, and poloxamine.

9. The method of claim 1 , wherein the forming of the hollow metal nano particles comprises further adding a non-ionic surfactant.

10. The method of claim 9 , wherein the non-ionic surfactant is selected from the group consisting of polyoxyethylene fatty alcohol ether, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene fatty acid ester, polyoxyethylene alkyl ether, polyoxyethylene castor oil derivatives, sorbitan ester, glyceryl ester, glycerol monostearate, polyethylene glycol, polypropylene glycol, polypropylene glycol ester, cetyl alcohol, cetostearyl alcohol, stearyl alcohol, aryl alkyl polyether alcohol, polyoxyethylene polyoxypropylene copolymers, poloxamer, poloxamine, methylcellulose, hydroxycellulose, hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, hydroxypropylmethylcellulose phthalate, noncrystalline cellulose, polysaccharides, starch, starch derivatives, hydroxyethyl starch, polyvinyl alcohol, triethanolamine stearate, amine oxide, dextran, glycerol, gum acacia, cholesterol, tragacanth, and polyvinylpyrrolidone.

11. The method of claim 1 , wherein the forming of the hollow metal nano particles comprises further adding a stabilizer.

12. The method of claim 11 , wherein the stabilizer comprises one or two or more selected from the group consisting of disodium phosphate, dipotassium phosphate, disodium citrate, and trisodium citrate.

13. The method of claim 1 , wherein the first metal of the first metal salt and the second metal of the second metal salt are each independently selected from the group consisting of metals belonging to Group 3 to Group 15 of the periodic table, metalloids, lanthanide metals, and actinide metals.

14. The method of claim 1 , wherein the first metal of the first metal salt and the second metal of the second metal salt are each independently selected from the group consisting of platinum (Pt), ruthenium (Ru), rhodium (Rh), molybdenum (Mo), osmium (Os), iridium (Ir), rhenium (Re), palladium (Pd), vanadium (V), tungsten (W), cobalt (Co), iron (Fe), selenium (Se), nickel (Ni), bismuth (Bi), tin (Sn), chromium (Cr), titanium (Ti), gold (Au), cerium (Ce), silver (Ag), and copper (Cu).

15. The method of claim 1 , wherein

Assignees

• Lg Chemical Ltd

Inventors

• Cho Jun Yeon
• Kim Sang Hoon
• Hwang Gyo Hyun
• Kim Kwanghyun

Classifications

• B22F1/0655

  Hollow particles · CPC title

• B22F1/054

  Nanosized particles · CPC title

• B22F1/17

  Metallic particles coated with metal · CPC title

• B22F1/0549

  Hollow particles, including tubes and shells · CPC title

• B22F1/102

  Metallic powder coated with organic material · CPC title