Silver Nanocolloid: Synthesis, Optical and Thermo-Optical Properties

Sakineh Hashemizadeh; Majid Rashidi Huyeh

doi:10.4028/www.scientific.net/AMR.829.670

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 829Silver Nanocolloid: Synthesis, Optical and...

Silver Nanocolloid: Synthesis, Optical and Thermo-Optical Properties

Abstract:

Linked to Surface Plasmon Resonance (SPR) phenomena, optical and thermo-optical properties of metal-dielectric nanocomposite materials including noble metal nanoparticles dispersed in a dielectric host medium are worthily interested. Indeed these materials have been proposed for many applications such as photonics devices, bio sensors and even photo-thermal therapy. Colloidal silver nanoparticles were synthesized by reduction of silver nitrate using of ascorbic acid and citrate as stabilizer agent in a 30°C water bath. The transmission electron microscopy (TEM) micrograph image shows formation of spheroidal silver nanoparticles with an average of large and small diameters about 43 and 34 nm respectively. Extinction spectrum, measured using UV-Vis spectroscopy, represented two peaks located around 420 and 620 nm of wavelength. These peaks are attributed to SPR phenomena and confirm spheroidal and spherical silver nanoparticle formation in solution. Thermo-optical properties of synthesized silver nanocolloids are then evaluated by measuring of extinction spectrum at different temperatures. Results showed an enhancement in thermo-optical properties of silver nanocolloids around the SPR wavelengths. Theoretical analysis, done using Mie and Mie-Gans theories, showed that the different peaks observed in extinction spectrum are related directly to shape effect.

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Periodical:

Advanced Materials Research (Volume 829)

Pages:

670-674

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.829.670

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Online since:

November 2013

Authors:

Sakineh Hashemizadeh*, Majid Rashidi Huyeh

Keywords:

Mie, Mie-Gans Theories, Optical Property, Silver Nanocolloid, Surface Plasmon Resonance, Thermo-Optical Properties

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* - Corresponding Author

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