Selenium nanoparticles of 1-2 nm were obtained by dissolving microscale Se powder in 1-tetradecene followed by simple solution precipitation.  The structures of the monodisperse Se nanoparticles were characterized by transmission electron microscope, high resolution transmission electron microscope (HRTEM), fast Fourier transformation (FFT) of HRTEM, energy-dispersive x-ray spectroscopy, UV-Visible spectrophotometer, and Raman spectroscopy.  A reversible phase transition cycle of monoclinic-trigonal-monoclinic of the Se nanocrystals synthesized was observed by Raman spectroscopy using 785 nm excitation wavelength.

Selenium from micrometer to nanometer

244th National Meeting (2012)

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