Preparation of semiconductor nanoparticle solutions using microreaction technology Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/5q47rs35n

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  • Nanoparticles, materials on a 10⁻⁹ meter size scale, are finding applications in a variety of areas including catalysts, fuel and solar cells, biological labeling. electronics and optoelectronic devices. Semiconductor nanoparticles are of particular interest because of their size tunable properties resulting from quantum confinement effects. Mass productions of monodisperse semiconductor nanoparticle solutions, thus, are of great interest. In this work, the application of microreaction technology for the production of aqueous solutions of cadmium sulfide nanoparticles is explored. Atomic Force Microscopy, Transmission Electron Microscopy, and real-time UV-Vis absorption are employed to study the CdS nanoparticle solutions prepared from a batch reactor system and a microreactor system at two concentration levels. It is found that the microreactor system produced a nanoparticle solution with a narrower size distribution at a reduced aggregation rate.
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