Method and apparatus for physical separation of different sized nanostructures

Roberts, Christopher B.; Saunders, Steven R.

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A - human necessities
A01 - agriculture
A21 - baking
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B01 - physical or chemical processes or apparatus in general
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Title: Method and apparatus for physical separation of different sized nanostructures

Abstract

The present application provides apparatuses and methods for the size-selective fractionation of ligand-capped nanoparticles that utilizes the tunable thermophysical properties of gas-expanded liquids. The nanoparticle size separation processes are based on the controlled reduction of the solvent strength of an organic phase nanoparticle dispersion through increases in concentration of the antisolvent gas, such as CO.sub.2, via pressurization. The method of nanomaterial separation contains preparing a vessel having a solvent and dispersed nanoparticles, pressurizing the chamber with a gaseous antisolvent, and causing a first amount of the nanoparticles to precipitate, transporting the solution to a second vessel, pressurizing the second vessel with the gaseous antisolvent and causing further nanoparticles to separate from the solution.

Inventors:: Roberts, Christopher B.; Saunders, Steven R.

Issue Date:: Tue Jul 10 00:00:00 EDT 2012

Research Org.:: Auburn Univ., AL (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1176454

Patent Number(s):: 8215489

Application Number:: 12/610,120

Assignee:: Auburn University (Auburn, AL)

Patent Classifications (CPCs):: B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES

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B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES
B82Y30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites
B82Y40/00 - Manufacture or treatment of nanostructures

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DOE Contract Number:: FG26-06NT42685

Resource Type:: Patent

Resource Relation:: Patent File Date: 2009 Oct 30

Country of Publication:: United States

Language:: English

Subject:: 77 NANOSCIENCE AND NANOTECHNOLOGY; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats


                    Roberts, Christopher B., and Saunders, Steven R. Method and apparatus for physical separation of different sized nanostructures.  United States: N. p., 2012. 
        Web.

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                    Roberts, Christopher B., & Saunders, Steven R. Method and apparatus for physical separation of different sized nanostructures.  United States.

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                    Roberts, Christopher B., and Saunders, Steven R. Tue .  
        "Method and apparatus for physical separation of different sized nanostructures".  United States.  https://www.osti.gov/servlets/purl/1176454.

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@article{osti_1176454,

  title        = {Method and apparatus for physical separation of different sized nanostructures},

  author       = {Roberts, Christopher B. and Saunders, Steven R.},

  abstractNote = {The present application provides apparatuses and methods for the size-selective fractionation of ligand-capped nanoparticles that utilizes the tunable thermophysical properties of gas-expanded liquids. The nanoparticle size separation processes are based on the controlled reduction of the solvent strength of an organic phase nanoparticle dispersion through increases in concentration of the antisolvent gas, such as CO.sub.2, via pressurization. The method of nanomaterial separation contains preparing a vessel having a solvent and dispersed nanoparticles, pressurizing the chamber with a gaseous antisolvent, and causing a first amount of the nanoparticles to precipitate, transporting the solution to a second vessel, pressurizing the second vessel with the gaseous antisolvent and causing further nanoparticles to separate from the solution.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Jul 10 00:00:00 EDT 2012},

  month        = {Tue Jul 10 00:00:00 EDT 2012}

}

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Works referenced in this record:

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Role of Steric Stabilization on the Arrested Growth of Silver Nanocrystals in Supercritical Carbon Dioxide
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Similar Records

Title: Method and apparatus for physical separation of different sized nanostructures

Abstract

Citation Formats

Solvent Effects on the Growth and Steric Stabilization of Copper Metallic Nanoparticles in AOT Reverse Micelle Systems journal, October 2003

Photoluminescence from nanosize gold clusters journal, June 1998

Finely Controlled Size-Selective Precipitation and Separation of CdSe/ZnS Semiconductor Nanocrystals Using CO 2 -Gas-Expanded Liquids journal, June 2007

Synthesis and characterization of nearly monodisperse CdE (E = sulfur, selenium, tellurium) semiconductor nanocrystallites journal, September 1993

Size-selective separation of gold nanoparticles using isoelectric focusing electrophoresis (IEF) journal, January 2005

Measurement of diffusion coefficients in supercritical carbon dioxide and correlation with the equation of Wilke and Chang journal, April 1987

The color of colloidal gold journal, January 1954

Precise and Rapid Size Selection and Targeted Deposition of Nanoparticle Populations Using CO 2 Gas Expanded Liquids journal, March 2005

Photochemistry of colloidal semiconductors. 30. HPLC investigation of small CdS particles journal, March 1989

Gas-Expanded Liquids journal, June 2007

Controlled Nucleation for the Regulation of the Particle Size in Monodisperse Gold Suspensions journal, January 1973

Synthesis of thiol-derivatised gold nanoparticles in a two-phase Liquid–Liquid system journal, January 1994

Size-Selective Dispersion of Dodecanethiol-Coated Nanocrystals in Liquid and Supercritical Ethane by Density Tuning journal, March 2002

Synthesis and Characterization of Monodisperse Nanocrystals and Close-Packed Nanocrystal Assemblies journal, August 2000

Recent developments in the preparation and properties of nanometer-size spherical and platelet-shaped particles and composite particles journal, August 1998

Rapid Purification and Size Separation of Gold Nanoparticles via Diafiltration journal, March 2006

Phase equilibria and thermophysical properties of carbon dioxide-expanded fluorinated solvents journal, April 2003

Metal Nanocrystal Superlattice Nucleation and Growth journal, February 2004

Tunable Solvation Effects on the Size-Selective Fractionation of Metal Nanoparticles in CO 2 Gas-Expanded Solvents journal, December 2005

Role of Steric Stabilization on the Arrested Growth of Silver Nanocrystals in Supercritical Carbon Dioxide journal, November 2002

Thermodynamic Analysis of Nanoparticle Size Selective Fractionation Using Gas-Expanded Liquids journal, February 2008

Seeding Growth for Size Control of 5−40 nm Diameter Gold Nanoparticles journal, October 2001

Precise Seed-Mediated Growth and Size-Controlled Synthesis of Palladium Nanoparticles Using a Green Chemistry Approach journal, June 2009

HPLC of Monolayer-Protected Gold Nanoclusters journal, January 2003

Tuning Solvents for Sustainable Technology journal, December 2000

Separation of Nanoparticles by Gel Electrophoresis According to Size and Shape journal, September 2007

The effect of nanoparticles on rough surface adhesion journal, May 2006

Solvent Effects on the Growth and Steric Stabilization of Copper Metallic Nanoparticles in AOT Reverse Micelle Systems
journal, October 2003

Photoluminescence from nanosize gold clusters
journal, June 1998

Finely Controlled Size-Selective Precipitation and Separation of CdSe/ZnS Semiconductor Nanocrystals Using CO ₂ -Gas-Expanded Liquids
journal, June 2007

Synthesis and characterization of nearly monodisperse CdE (E = sulfur, selenium, tellurium) semiconductor nanocrystallites
journal, September 1993

Size-selective separation of gold nanoparticles using isoelectric focusing electrophoresis (IEF)
journal, January 2005

Measurement of diffusion coefficients in supercritical carbon dioxide and correlation with the equation of Wilke and Chang
journal, April 1987

The color of colloidal gold
journal, January 1954

Precise and Rapid Size Selection and Targeted Deposition of Nanoparticle Populations Using CO ₂ Gas Expanded Liquids
journal, March 2005

Photochemistry of colloidal semiconductors. 30. HPLC investigation of small CdS particles
journal, March 1989

Gas-Expanded Liquids
journal, June 2007

Controlled Nucleation for the Regulation of the Particle Size in Monodisperse Gold Suspensions
journal, January 1973

Synthesis of thiol-derivatised gold nanoparticles in a two-phase Liquid–Liquid system
journal, January 1994

Size-Selective Dispersion of Dodecanethiol-Coated Nanocrystals in Liquid and Supercritical Ethane by Density Tuning
journal, March 2002

Synthesis and Characterization of Monodisperse Nanocrystals and Close-Packed Nanocrystal Assemblies
journal, August 2000

Recent developments in the preparation and properties of nanometer-size spherical and platelet-shaped particles and composite particles
journal, August 1998

Rapid Purification and Size Separation of Gold Nanoparticles via Diafiltration
journal, March 2006

Phase equilibria and thermophysical properties of carbon dioxide-expanded fluorinated solvents
journal, April 2003

Metal Nanocrystal Superlattice Nucleation and Growth
journal, February 2004

Tunable Solvation Effects on the Size-Selective Fractionation of Metal Nanoparticles in CO ₂ Gas-Expanded Solvents
journal, December 2005

Role of Steric Stabilization on the Arrested Growth of Silver Nanocrystals in Supercritical Carbon Dioxide
journal, November 2002

Thermodynamic Analysis of Nanoparticle Size Selective Fractionation Using Gas-Expanded Liquids
journal, February 2008

Seeding Growth for Size Control of 5−40 nm Diameter Gold Nanoparticles
journal, October 2001

Precise Seed-Mediated Growth and Size-Controlled Synthesis of Palladium Nanoparticles Using a Green Chemistry Approach
journal, June 2009

HPLC of Monolayer-Protected Gold Nanoclusters
journal, January 2003

Tuning Solvents for Sustainable Technology
journal, December 2000

Separation of Nanoparticles by Gel Electrophoresis According to Size and Shape
journal, September 2007

The effect of nanoparticles on rough surface adhesion
journal, May 2006