Aggregation of fullerol C60(OH)24 nanoparticles as revealed using flow field-flow fractionation and atomic force microscopy

Assemi, Shoeleh, Tadjiki, Soheyl, Donose, Bogdan C., Nguyen, Anh V. and Miller, Jan D. (2010) Aggregation of fullerol C60(OH)24 nanoparticles as revealed using flow field-flow fractionation and atomic force microscopy. Langmuir, 26 20: 16063-16070. doi:10.1021/la102942b


Author Assemi, Shoeleh
Tadjiki, Soheyl
Donose, Bogdan C.
Nguyen, Anh V.
Miller, Jan D.
Title Aggregation of fullerol C60(OH)24 nanoparticles as revealed using flow field-flow fractionation and atomic force microscopy
Formatted title Aggregation of fullerol C60(OH)24 nanoparticles as revealed using flow field-flow fractionation and atomic force microscopy
Journal name Langmuir   Check publisher's open access policy
ISSN 0743-7463
1520-5827
Publication date 2010-10-19
Sub-type Article (original research)
DOI 10.1021/la102942b
Volume 26
Issue 20
Start page 16063
End page 16070
Total pages 8
Editor David G. Whitten
Francoise M. Winnik
Place of publication Washington, DC, U.S.A.
Publisher American Chemical Society
Collection year 2011
Language eng
Formatted abstract The effects of solution pH and 1:1 electrolyte concentration on the aggregation behavior of fullerol C60(OH)24 nanoparticles were investigated using flow field-flow fractionation (FlFFF). Particle separations were confirmed by examining FFF fractions using atomic force microscopy (AFM). Results showed that fullerol C60(OH)24 nanoparticles remain stable at low salt concentration (0.001 M NaCl) and basic pH (pH 10). Changing the pH did not affect the size significantly, but increasing the salt concentration promoted some aggregation. Fullerol C60(OH)24 nanoparticles did not form large clusters and reached a maximum size of at most several nanometers. Particle interaction analysis using the colloid interaction theory as described by the energetics of electrostatic repulsion and van der Waals attraction explained the differences in the colloidal stability of the fullerol C60(OH)24 nanoparticles under different solution conditions.
© 2010 American Chemical Society
Keyword Carbon-black
In-vitro
Particles
Cells
Size
Deposition
Chemistry
Toxicity
Fate
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2011 Collection
Advanced Water Management Centre Publications
 
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Created: Sun, 31 Oct 2010, 00:04:19 EST