Paper Title:
A Theoretical Model for Digestive Ripening
  Abstract

Recently, gram quantities of monodisperse gold or silver nanoparticles were reported to be produced through a digestive ripening process, in which colloidal particles of size 2 to 40 nm are transformed to nearly monodisperse particles of 4 ~ 5 nm diameter. Digestive ripening, an example for an inverse Ostwald ripening process, is a puzzling phenomenon since it appears to go against the usual capillary effect, i.e., reduction of interfacial free energy. A theoretical model is presented, which accounts for the monodisperse state of such nanoparticles by considering the effect of charges on the particles and thus electrostatic energy during particle size evolution.

  Info
Periodical
Materials Science Forum (Volumes 561-565)
Main Theme
Edited by
Young Won Chang, Nack J. Kim and Chong Soo Lee
Pages
2279-2282
DOI
10.4028/www.scientific.net/MSF.561-565.2279
Citation
D. K. Lee, S. I. Park, J. K. Lee, N. M. Hwang, "A Theoretical Model for Digestive Ripening", Materials Science Forum, Vols. 561-565, pp. 2279-2282, 2007
Online since
October 2007
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