Is this going to be on the exam?
Here’s a video demonstration of how to make silver nanoparticles, and change their colour easily by adding silver ion to a seed solution. Colour is monitored by UV/visible spectroscopy and some particle sizing is done by dynamic light scattering and TEM (transmission electron microscopy). This is a short overview video of a much larger interactive resource that will be published soon as part of the RSC HE STEM project. It’s also related to the Nanotechnology Workshop we developed for schools [PDF].
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