Method for production of indium nanoparticles

Patent metadata

Field	Value
Publication number	US-2017080500-A1
Application number	US-201615370857-A
Country	US
Kind code	A1
Filing date	Dec 6, 2016
Priority date	Jul 9, 2014
Publication date	Mar 23, 2017
Grant date	—

Abstract

The present disclosure is directed to methods for producing indium nanoparticles. The methods comprise dissolving indium chloride in a solution that includes a solvent and a surfactant, adding a reducing agent to the reaction mixture to form an agglomerate of In nanoparticles, and exposing the reaction mixture to a gas including oxygen to disperse the agglomerate into a plurality of individual indium nanoparticles.

First claim

1 - 26 . (canceled)

27 . A method for producing indium (In) nanoparticles comprising:
dissolving indium chloride in a solution including a solvent and a surfactant to form a reaction mixture; adding a reducing agent to the reaction mixture to form an agglomerate of In nanoparticles within the reaction mixture; and exposing the reaction mixture to a gas including oxygen to disperse the agglomerate into a plurality of individual In nanoparticles.

28 . The method in accordance with claim 27 , wherein the solvent is tetrahydrofuran.

29 . The method in accordance with claim 28 , further comprising providing about 60 mL of tetrahydrofuran per gram of indium chloride dissolved in the solution.

30 . The method in accordance with claim 27 , wherein the surfactant is trioctylphosphine.

31 . The method in accordance with claim 30 , further comprising providing about 30 mL of trioctylphosphine per gram of indium chloride dissolved in the solution.

32 . The method in accordance with claim 27 , wherein adding a reducing agent to the reaction mixture includes adding superhydride solution to the reaction mixture.

33 . The method in accordance with claim 32 , wherein adding superhydride solution to the reaction mixture includes adding about 25 mL of superhydride solution per gram of indium chloride.

34 . The method in accordance with claim 27 , wherein exposing the reaction mixture to a gas including oxygen includes exposing the reaction mixture to air.

35 . The method in accordance with claim 34 , further comprising stirring the reaction mixture for a duration ranging from about two hours to about four hours while the reaction mixture is exposed to the air.

36 . The method in accordance with claim 27 , further comprising separating the plurality of individual In nanoparticles from the reaction mixture.

37 . The method in accordance with claim 36 , wherein separating the plurality of individual In nanoparticles from the reaction mixture includes separating the plurality of individual In nanoparticles from the reaction mixture by centrifugation.

38 . The method in accordance with claim 37 , further comprising rinsing the separated plurality of individual In nanoparticles with a rinse solvent.

39 . The method in accordance with claim 38 , wherein rinsing the separated plurality of individual In nanoparticles with a rinse solvent includes rinsing the separated plurality of individual In nanoparticles with ethanol.

40 . The method in accordance with claim 39 , further comprising rinsing the separated plurality of individual In nanoparticles with the rinse solvent a second time.

41 . The method in accordance with claim 27 , wherein dissolving indium chloride in the solution includes dissolving indium chloride in the solution at about room temperature.

42 . The method in accordance with claim 27 , wherein each individual In nanoparticle of the plurality of individual In nanoparticles has a particle size of about 2 nm.

43 . A method for producing indium (In) nanoparticles comprising:
dissolving indium chloride in a solution including tetrahydrofuran and trioctylphosphine to form a reaction mixture; adding superhydride solution to the reaction mixture to form an agglomerate of In nanoparticles within the reaction mixture; and exposing the reaction mixture to air to disperse the agglomerate into a plurality of individual In nanoparticles.

44 . The method of claim 43 , further comprising providing about 60 mL of tetrahydrofuran per gram of indium chloride dissolved in the solution.

45 . The method of claim 43 , further comprising providing about 30 mL of trioctylphosphine per gram of indium chloride dissolved in the solution.

46 . The method of claim 43 , further comprising separating the plurality of individual In nanoparticles from the reaction mixture by centrifugation and rinsing the separated plurality of individual In nanoparticles with ethanol.

Assignees

• Honda Motor Co Ltd

Inventors

• Chou Nam Hawn

Classifications

• B01J35/45

  Nanoparticles · CPC title

• B82Y40/00

  Manufacture or treatment of nanostructures · CPC title

• B01J23/08

  of gallium, indium or thallium · CPC title

• B22F9/24 Primary

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

• C01B31/0233

  Chemistry & Metallurgy · mapped topic