Rapid Laser-assisted Nanosizing Noble Silver Nanoparticles in Plant Extracts and Physiochemical Characterization
Lamin S. Kassama, Tatiana Kukhtareva, Nickolai Kukhtarev, Abiola John Kuponiyi

Abstract
Production of silver nanoparticles (AgNP) using different biological methods is gaining recognition due to their multiple applications. The objective of this study was to evaluate the effect of pulse laser application for rapid synthesis and homogeneous size reduction and distribution of nanoparticles. The extracts of Magnolia, Aloe Vera and Eucalyptus were used as reducing agents to produce the nanoparticles. During the pulse laser (Nd-YAG) illumination (λ=1064&532nm, PE= 450&200mJ, 10 Hz) the blue shift of the surface plasmon resonance absorption peak was observed at ~424to 403nm range for AgNP. In addition, NNP solution after Nd-YAG illumination was characterized by the narrowing of the Surface Plasmon absorption resonance band which correlates to the monodiespersity of the NNP distributions. FTIR, TEM, DLS, Zeta potential results demonstrated that NNP were surrounded by biological molecules which contributes to it natural stability.

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