Precise and rapid size selection and targeted deposition of nanoparticle populations using CO2 gas expanded liquids.
This paper demonstrates the rapid and precise size selection of nanoparticle populations using the pressure tunable solvent properties of CO2-expanded liquids. Specifically, by pressurizing and expanding a single organic solution with carbon dioxide gas, ligand-stabilized silver particles of desired mean size were size selectively precipitated at desired locations. Compared to current techniques, this CO2-expanded liquid approach provides for faster and more efficient particle size separation, reduction in organic solvent usage, and pressure tunable size selection.
McLeod
M Chandler
MC
Department of Chemical Engineering, Auburn University, Auburn, Alabama 36849, USA.
Anand
Madhu
M
Kitchens
Christopher L
CL
Roberts
Christopher B
CB
D002245:Carbon Dioxide / Q000737:chemistry*; D003460:Crystallization / Q000379:methods*; D005740:Gases / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D036103:Nanotechnology / Q000379:methods*; D043942:Nanotubes / Q000032:analysis / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D011312:Pressure; D012834:Silver / Q000032:analysis / Q000737:chemistry*; D012996:Solutions
D005740:Gases; D012996:Solutions; D002245:Carbon Dioxide; D012834:Silver