Title

The Synthesis and Testing of Silver Core, Gold Shelled Nanoparticles in Various Media

School Name

Governor's School for Science & Mathematics

Grade Level

12th Grade

Presentation Topic

Environmental Science

Presentation Type

Mentored

Mentor

Mentor: Ruth Merrifield, University of South Carolina

Abstract

Silver nanoparticles (AgNPs) are widely used in industry – in clothing, cosmetics, or lotions – though there is still very little known about them. We do, however, know that they are toxic to wildlife and potentially humans. The purpose of this study is to determine how different thicknesses of gold layers on the AgNPs dissolve, change, or aggregate in order to more fully understand these particles to make them safer. To do this, four different NPs with different thicknesses of gold layers were tested using UV-Visible Spectrum, Dynamic Light Scattering, and Inductively Coupled Plasma Mass Spectrometer. This experiment has given scientists a better understanding of nanoparticles, since the study showed that Ag@AuNPs 1 seem to be less toxic – they aggregated and dissolved less rapidly.

Start Date

3-25-2017 11:59 PM

Presentation Format

Written Only

Group Project

No

COinS
 
Mar 25th, 11:59 PM

The Synthesis and Testing of Silver Core, Gold Shelled Nanoparticles in Various Media

Silver nanoparticles (AgNPs) are widely used in industry – in clothing, cosmetics, or lotions – though there is still very little known about them. We do, however, know that they are toxic to wildlife and potentially humans. The purpose of this study is to determine how different thicknesses of gold layers on the AgNPs dissolve, change, or aggregate in order to more fully understand these particles to make them safer. To do this, four different NPs with different thicknesses of gold layers were tested using UV-Visible Spectrum, Dynamic Light Scattering, and Inductively Coupled Plasma Mass Spectrometer. This experiment has given scientists a better understanding of nanoparticles, since the study showed that Ag@AuNPs 1 seem to be less toxic – they aggregated and dissolved less rapidly.