Coloring the Glass with Silver Nanostructures and Investigation of the Dependence of Color to the Nanostructures

In this study, colored glass was prepared using layer coating with silver nanostructures such as nanowire, spherical nanoparticles and dendritic. Silver nanowires were prepared by a solvo-thermal and polyol combination method with different molar ratios of poly-vinyl-pyrrolidone and silver nanoparticles by polyol and chemical reduction methods. The silver dendritic nanostructure was made by dip coating method in different sizes. Characterization of silver nanostructures was accomplished by X-ray diffraction, scanning electron microscopy and ultraviolet-visible spectroscopy. The cleaned glasses then were coated by immersion in a solution of silver nanostructures. In order to fix the color of the glasses after the coating operation, the glasses were heated at 700 °C. The colors of the glasses were in the yellow color range. The glass color characteristics, including the color parameters and color coefficients and the dominant wavelength, were studied using a spectrophotometer and color triangle. It was observed that the color coefficients (L*a*b*) for the same concentrations and different morphologies of the nanostructures were different and varied from (55.87, -8.39 and 9.94) for nanowires to (-66.85, -20.65 and 18.91) for dendritic and (46.69, -1.65 and -30.62) for nanoparticles. The effect of the concentration and size of nanostructures on the color of the glasses was also investigated.