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  Home > JCE Print > Journal of Chemical Education > Issues > 2007  > April  >
In the Laboratory
Preparation of CdS Nanoparticles by First-Year Undergraduates
Kurt Winkelmann, Thomas Noviello, and Steven Brooks
Department of Chemistry, Florida Institute of Technology, Melbourne, FL 32901
Cover
April 2007
Vol. 84 No. 4
p. 709

Abstract
First-year undergraduate students prepare bulk and nanometer-sized cadmium sulfide clusters within water-in-oil micelles. Particle size is calculated using the effective mass model. Quantum-size effects are observed by visual analysis and in the absorbance spectrum of the CdS nanoparticle microemulsion. This laboratory experiment provides an effective way to introduce nanotechnology and surfactant chemistry to students in the general chemistry laboratory.
Supplement
The student laboratory handout, microemulsion parameters template, instructor notes, and a data-analysis template are available.
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Contents
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Citation
Winkelmann, Kurt; Noviello, Thomas; Brooks, Steven. J. Chem. Educ. 2007, 84, 709.
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Keywords
Colloids; First-Year Undergraduate / General; Hands-On Learning / Manipulatives; Interdisciplinary / Multidisciplinary; Laboratory Instruction; Materials Science; Micelles; Nanotechnology; Physical Chemistry; Semiconductors; UV-Vis Spectroscopy
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History
Created:
Last Updated:
3/6/2007
3/8/2007
 Caution! 
Experiments, laboratory exercises, lecture demonstrations, and other descriptions of the use of chemicals, apparatus, instruments, computers, and computer interfaces are presented in the Journal of Chemical Education as illustrative of new or improved ideas or concepts in chemistry instruction and are directed at qualified teachers. Although every effort is made to assure and encourage safe practices and safe use of chemicals, the Journal of Chemical Education cannot assume responsibility for uses made of its published materials. Many chemicals are hazardous. Precautions for the safe use of hazardous chemicals and directions for their proper disposal are described in the Material Safety Data Sheets and on the labels. We strongly urge all those planning to use materials from our pages to make choices and to develop procedures for laboratory and classroom safety in accordance with local needs and situations.
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