Saliva and light as templates for the green synthesis of silver nanoparticles
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2014-01-20
Autores
Matos, Ricardo Almeida de [UNIFESP]
Courrol, Lilia Coronato [UNIFESP]
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We report a method for the synthesis of silver nanoparticles using an aqueous saliva solution and irradiation with light from a mercury metal halide lamp. Bi-deionized water was used as the solvent, and surfactants or reducing agents were substituted by saliva and light in the procedure, characterizing the process as a green synthesis. the light was used to reduce silver ions (Ag+) to metallic silver (Ag-0). the average size, size distribution, and morphology of the nanoparticles were determined by transmission electron microscopy (TEM), UV/visible absorption spectrophotometry and Fourier transform infrared spectroscopy (FTIR). Spherical nanoparticles of similar to 20 nm in size were present after the lamp illumination. This methodology represents a non-invasive approach for disease detection and possesses a good potential for diagnostics applications. (C) 2013 Elsevier B.V. All rights reserved.
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Colloids and Surfaces A-physicochemical and Engineering Aspects. Amsterdam: Elsevier B.V., v. 441, p. 539-543, 2014.