Bio-inspired synthesis of silver nanoparticles using Hibiscus Tiliaceus L. flower extracts for improved optical characte
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Bio-inspired synthesis of silver nanoparticles using Hibiscus Tiliaceus L. flower extracts for improved optical characteristics Attiyat A. Alawfi1, Fryad Zeki Henari2, Adnan Younis1,*
1 2
, and Hacene Manaa1
Department of Physics, College of Science, University of Bahrain, Sakhir Campus, P.O. Box 32038, Zallaq, Kingdom of Bahrain Royal College of Surgeons in Ireland- Medical University of Bahrain, Busaiteen, Kingdom of Bahrain
Received: 21 June 2020
ABSTRACT
Accepted: 5 October 2020
In this work, we report a simple, facile, environment friendly and green approach to synthesize silver nanoparticles using aqueous flower extracts of Hibiscus Tiliaceus L. The morphology (shape/size) and crystal structure of assynthesized silver nanoparticles (NPs) were determined by transmission electron microscopy and x-ray diffraction. The UV–Vis spectroscopy was used to record the surface plasmon resonance peak, while spectro-fluorophotometry was used to examine the fluorescence emission spectra of silver NPs. Moreover, the optical nonlinearities of silver NPs were investigated using z-scan technique with low power argon laser beam at wavelengths 488 nm and 514 nm in continuous-wave regime and at 532 nm in the pulsed laser regime. Our results indicate that the nonlinear absorption in silver NPs is reverse saturation absorption of the order of 10–3 cm/W and the negative nonlinear refractive index was determined as of the order of 10–8 cm2/W. Moreover, the optical nonlinear properties were used to demonstrate optical limiting abilities of the synthesized silver NPs. The results presented in this study indicate that biosynthesized silver NPs are excellent candidates as a nonlinear material and can be widely used for waveguide applications.
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Springer Science+Business
Media, LLC, part of Springer Nature 2020
1 Introduction In recent years, there is an increasing demand to adopt green and environmental methods to tackle health and environmental hazards while fabrication of metallic nanomaterials. In this context, green
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https://doi.org/10.1007/s10854-020-04619-6
nanotechnology can facilitate the technological development of new chemical and industrials methods for minimizing hazardous effects to synthesize metallic nanoparticles. The commonest method used to produce metallic nanoparticles, particularly silver (Ag) NPs, is synthetic routes, where various reagents and stabilizers are used for the reduction of silver
J Mater Sci: Mater Electron
ions to stabilize Ag NPs. Most of the reagents are toxic and can pose serious health and environmentrelated issues [1, 2]. On the other hand, green synthesis of Ag NPs has gained increasing interest, where nontoxic molecules and plants (usually contain sugars, terpenoids, polyphenols, alkaloids, phenolic acids and proteins) can alternatively be used as stabilizers, thus offer less toxicity, high stability and more importantly comparable physicochemical characteristics [3, 4]. Due to exceptional optical, thermal, sensing and elec
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