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2005
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In the Laboratory
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Growth Kinetics and Modeling of ZnO Nanoparticles
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Penny S. Hale, Leone M. Maddox, Joe G. Shapter, and Nico H. Voelcker
School of Chemistry, Physics and Earth Sciences (SoCPES), Flinders University of South Australia, Adelaide, 5000, Australia
Michael J. Ford
Institute of Nanoscale Technology, University of Technology, Sydney, Broadway, NSW, 2007, Australia
Eric R. Waclawik
School of Physical and Chemical Sciences, Queensland University of Technology, Brisbane, QLD, 4001, Australia
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May 2005
Vol. 82 No. 5
p. 775
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| Abstract |
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This article describes a method to measure the growth kinetics of a zinc oxide colloid. Using common instrumentation such as UV–vis spectroscopy, the cut-off wavelength can be determined and hence, the particle size can be estimated. Using existing models of colloidal nanoparticle properties, the absorbance is modeled and compared to the experimental curves. The effect of different parameters in the model such as particle size, refractive index, and solvent type are investigated and conclusions drawn about the nature of nanoparticulate systems.
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| Supplement |
Instructions for the students, including lab questions, experimental constants, and dielectric data, and notes for the instructor are available.
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 Contents |
JCE2005p0775W.doc (Microsoft Word)
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| Download |
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| More Information |
Citation |
Hale, Penny S.; Maddox, Leone M.; Shapter, Joe G.; Voelcker, Nico H.; Ford, Michael J.; Waclawik, Eric R. J. Chem. Educ. 2005 82 775.
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Keywords |
Colloids; Kinetics; Modelling*; Nanotechnology; UV-Vis Spectroscopy
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History |
Created:
Last Updated: |
March 28, 2005
April 15, 2005
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