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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

J. Chem. Educ., 2005, 82 (5), p 775

DOI: 10.1021/ed082p775

Publication Date (Web): May 1, 2005

Section:

History, Education, and Documentation

Abstract

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.

Keywords (Audience):

Upper-Division Undergraduate

Keywords (Domain):

Inorganic Chemistry

Keywords (Pedagogy):

Hands-On Learning / Manipulatives

Keywords (Subject):

Colloids

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