Influence of Synthesis Temperature on Growth of Silver Nanorods
نویسندگان
چکیده
Silver nanorods (Ag NR) have been successfully synthesized by wet chemical method (seed-mediated growth) utilizing 10 nm silver nanospheres as a seed material and subsequent reduction of silver precursor with a weak reducing agent (ascorbic acid) along with a directing surfactant. The effect of synthesis temperature on the structure, morphology, composition and optical properties were investigated through X-ray diffraction analysis, scanning electron microscopy, transmission electron microscopy, energy dispersive spectroscopy, UV-Vis and FTIR spectroscopy. Both XRD and SAED patterns demonstrate that silver nanorods are crystallized in face centered cubic symmetry. The synthesis temperature significantly influences the morphology of the nanorods. Absorbance spectra confirm the nanorods formation with two SPR bands, one at lower wavelength side and another at higher wavelength side. The results show that increase of synthesis temperature led to decrease of aspect ratio of nanorods.
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