Articulo
Preparation of Gold Nanoparticles Using 2-Ethoxyethanol, 2-Methoxyethanol and 1,3-Butyleneglycol Supported in Chitosan
Journal Of Cluster Science
Registro en:
1140025
1140025
Autor
Cardenas-Trivino, Galo
Sáez, Vanessa
Cruzat-Contreras, Christian
Institución
Resumen
The aim of this work was to prepare and characterize several properties of Au nanoparticles colloids prepared by the "chemical liquid deposition" method, which involves the co-deposition of metallic Au with organic vapors (2-ethoxyethanol, 2-methoxyethanol and 1,3-butylenglycol at 77 K). AuNPs supported on chitosan were performed by solvated metal atom dispersed method. Then, colloids were characterized by transmission electron microscopy (TEM), electron diffraction (ED), UV-Vis spectroscopy, electrophoretic mobility, physical stability, medium-far infrared spectroscopy and thermogravimetric analysis. These studies had demonstrate that Au nanoparticles solvated with 1,3-butylenglycol and 2-ethoxyethanol, shows higher stability, due to their high dielectric constant and a better NPs solvation. TEM analysis showed a size distribution between 4.61 and 48.8 nm. From ED, a face-centered cubic structure was found. UV-Vis analysis showed lower stability of nanoparticles solvated with 2-methoxyethanol. FTIR spectra showed that the solvent was incorporated and surround the Au NPs. The thermograms shows that thermal decomposition of AuNPs-chitosan decreases with the metal presence. Bioassays of acute toxicity on fishes with AuNPs-chitosan with 1,3-butylenglycol were carried out due to the lower toxicity. The bioassay showed that 0.94 mL/L produce mortality of 50 % (LD 50) of fishes exposed 96 h calculated with a confidence interval of 0.810-1.148 mL/L.