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Investigating the Shape and Size-Dependent Optical Properties of Silver Nanostructures Using UV–vis Spectroscopy

  • Amirmostafa Amirjani
    Amirmostafa Amirjani
    Department of Mining and Metallurgical Engineering, Amirkabir University of Technology, Tehran 15875-4413, Iran
  • Niloofar Namazi Koochak
    Niloofar Namazi Koochak
    Department of Mining and Metallurgical Engineering, Amirkabir University of Technology, Tehran 15875-4413, Iran
  • , and 
  • Davoud Fatmehsari Haghshenas*
    Davoud Fatmehsari Haghshenas
    Department of Mining and Metallurgical Engineering, Amirkabir University of Technology, Tehran 15875-4413, Iran
    *E-mail: [email protected]
Cite this: J. Chem. Educ. 2019, 96, 11, 2584–2589
Publication Date (Web):October 1, 2019
Copyright © 2019 American Chemical Society and Division of Chemical Education, Inc.

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    Abstract Image

    In the laboratory experiment described here, students synthesize silver nanostructures (AgNS) with different shapes and sizes to elucidate the shape- and size-dependent optical properties of nanostructured materials. Students also develop understanding of some thermodynamic and kinetic aspects of the synthesis process through this experiment. In the size-controlled synthesis of spherical and triangular silver nanostructures, students can observe the conspicuous color change of colloidal AgNS systems. In addition, the optical properties of these materials can be analyzed qualitatively and quantitatively using UV–vis spectroscopy and dynamic light scattering. Students gain skills in synthesizing and characterizing different silver nanostructures (sphere and triangle) and learn about the shape-dependent optical properties of these nanostructures.

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