Of Interest for "Activated" Palladium?
http://www.ias.ac.in/pramana/v65/p815/abs.htm
Fluorescent silver nanoparticles via exploding wire technique
ALQUDAMI ABDULLAH and
Department of Physics and Astrophysics,
*Corresponding author. E-mail: [EMAIL PROTECTED];
Abstract. Aqueous solution containing spherical silver
nanoparticles of 20--80 nm size have been generated using a newly
developed novel electro-exploding wire (EEW) technique where thin silver
wires have been exploded in double distilled water. Structural properties of
the resulted nanoparticles have been studied by means of X-ray
diffractometer (XRD) and transmission electron microscopy (TEM). The
absorption spectrum of the aqueous solution of silver nanoparticles showed
the appearance of a broad surface plasmon resonance (SPR) peak centered at a
wavelength of 390 nm. The theoretically generated SPR peak seems to be in
good agreement with the experimental one. Strong green fluorescence emission
was observed from the water-suspended silver nanoparticles excited with
light of wavelengths 340, 360 and 390 nm. The fluorescence of silver
nanoparticles could be due to the excitation of the surface plasmon coherent
electronic motion with the small size effect and the surface effect
considerations."
Fred
