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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:
;
Issue Date:
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
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.
Roberts, Christopher B., & Saunders, Steven R. Method and apparatus for physical separation of different sized nanostructures. United States.
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.
@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 = {2012},
month = {7}
}

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