Volume 18 No 3 (2020)
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Influence of Laser Wavelength and Solution Type on the Optical Absorbance of Colloidal AG Nanoparticles Synthesized by Laser Ablation
Ibtisam J. Abd Ali Al-Fatlawi, Azher A. Habieb, Abass Mohsin Ali, Adel H. Omran Alkhayatt
Silver colloidal nanoparticles were prepared by pulse Laser ablation of pure silver plate dipped in three deferent solutions deionized water (DI), distilled water (DW) and Polyvinylpyrrolidone (PVP) polymer. The ablation was performed by the Neodymium-doped Yttrium aluminum Garnet laser beam using two different wavelengths 1064 nm and 532 nm, energy of 650 mJ /pulse and 100 pulses number at room temperature. The impact of the wavelength of the laser beam and solution type on the surface Plasmon resonance bane (absorbance) and the surface morphology of the prepared Ag colloidal nanoparticles were investigated. The efficiency of the nanoparticle preparation process (PLA) was quantified in terms of the absorption spectra peaks. The optical density (absorbance) at (λmax) of Ag NPs which ablated by using Laser wavelength 1064 nm in all solution types was higher than its optical density (absorbance) which ablated using laser wavelength 532 nm.
Ag Colloidal Nanoparticles, PLAL, SPR Band, SEM.
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