<br/>Silver nanoparticles can be synthesized to become certain colors in solution. Methods have been introduced to properly coat these nanoparticles with silica and transform them into films maintaining their solution color. Coating gold takes 2-3 hours, but the reagents are not silver nanoparticle friendly. Silver takes many steps and 2-3 days to coat, which can be costly at large amounts. A hybrid method between the silver and gold coating methods was tested, taking 2-3 h to completely coat silver nanoparticles. The color was monitored in solutions and films using UV-vis, and with TEM, the formation of the nanoparticle and silica shell were monitored. Color was preserved from solution to film. Reproducing the silver nanoparticle colors could make the design of sensors environmentally friendly and cost-efficient.

Preserving silver nanoparticle color in solutions and films using silica coating

2019 Spring National Meeting

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