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Separation and Preconcentration of Gold and Silver Nanoparticles Using Cloud Point Extraction

Zare-moghadam, Mousa | 2013

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 45651 (03)
  4. University: Sharif University of Technology
  5. Department: Chemistry
  6. Advisor(s): Hormozi-Nezhad, M.R
  7. Abstract:
  8. Separation and identification of metal nanoparticles in surface water samples such as river water is very important. Nanoparticles specially metal nanoparticles have small dimensions can easily pass through from the body's outer immune system and disrupt biological function. Most of the nanoparticles have active surface so environmental contaminants can be absorbed on their surface and then can penerated in the body, and they may cause disease. Therefore determination of nanoparticles type and concentrations and their separation from the surrounding environment, especially surface waters is important. Separation and preconcentration of metal nanoparticles was done by using cloud point extraction system. Besides in this method cheap commercial surfactants are available and they don't have environmental pollution, this method is simple and inexpensive and faster than other methods. In addition it can be used for variety of nanoparticles, including magnetic and metal nanoparticles. In this project gold and silver nanoparticles from aqueous phase, separated and extracted using cloud point extraction system and preconcentration factor of 48.7 and 50 .0 are obtained respectively for gold and silver nanoparticles
  9. Keywords:
  10. Separation ; Identification ; Metallic Nanoparticles ; Equeous Media ; Cloud Point ; Extraction

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