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FESEM image of silver nanoparticles and inset shows EDX profile for the same.
Figure 2 shows the FESEM image of silver nanoparticles.
Inset of Figure 2 shows EDX spectrum of silver nanoparticles.
Therefore, the EDX profile of sample (inset of Figure 2) indicates
that the silver nanoparticles sample contain pure silver, with no
Majeed Khan, Mohd Abdul; Kumar, Sushil; Ahamed, Maqusood; Alrokayan, Salman A; AlSalhi, Mohammad SalehJournal: Nanoscale Research Letters
Issue 1DOI: 10.1186/1556-276X-6-434Published: 2011-12-01Institution(s):
King Abdullah Institute for Nanotechnology, King Saud University, Chaudhary Devi Lal University, King Saud University
This work reports the preparation and characterization of silver nanoparticles synthesized through wet chemical solution method and of silver films deposited by dip-coating method. X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), field emission transmission electron microscopy (FETEM), high-resolution transmission electron microscopy (HRTEM), selected area electron diffraction (SAED), and energy dispersive spectroscopy (EDX) have been used to characterize the prepared silver nanoparticles and thin film. The morphology and crystal structure of silver nanoparticles have been determined by FESEM, HRTEM, and FETEM. The average grain size of silver nanoparticles is found to be 17.5 nm. The peaks in XRD pattern are in good agreement with that of face-centered-cubic form of metallic silver. TGA/DTA results confirmed the weight loss and the exothermic reaction due to desorption of chemisorbed water. The temperature dependence of resistivity of silver thin film, determined in the temperature range of 100-300 K, exhibit semiconducting behavior of the sample. The sample shows the activated variable range hopping in the localized states near the Fermi level.
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