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5335026 
Journal Article 
Surface properties of zinc oxide nanoparticles studied by inverse gas chromatography 
Przybyszewska, M; Krzywania, A; Zaborski, M; Szynkowska, MI 
2009 
Yes 
Journal of Chromatography A
ISSN: 0021-9673
EISSN: 1873-3778 
1216 
27 
5284-5291 
English 
19464015 
WOS:000267559800016 
Inverse gas chromatography (IGC) was applied in infinite dilution to evaluate the surface properties of zinc oxide nanoparticles with respect to their specific surface area, particle size and morphology (spherical, whiskers, and snowflakes). The dispersive components (gamma(S)(D)) of the free energy of zinc oxides were determined by Gray's method, whereas their tendency to undergo specific interactions was estimated based on the electron donor-acceptor approach presented by Papirer. The zinc oxide nanoparticles exhibited high surface energies that were dependent on their morphology. The highest value of gamma(S)(D) was determined for spherical zinc oxide particles with high specific surface area, which had the most structure defects. The specific interactions were characterized by the energy (DeltaG(A)(SP)) and enthalpy (DeltaH(A)(SP)) of adsorption as well as the donor and acceptor interaction parameters (K(A), K(D)). 
Inverse gas chromatography; Zinc oxide nanoparticles; Surface energy; Specific interactions; Electron donor-acceptor properties