Silica nanoparticles are synthesized through the sol-gel method.
The size of the nanoparticles is controlled by the amount of water.
Why is the size of nanoparticles controlled by the amount of
water?
Briefly explain how a medical diagnostic test kit based
on gold nanoparticles works. Pitch your answer at the level of a
scientifically-literate audience that are not physicists. (A
diagram could be useful)
What is the wavelength of the maximum absorbance of the
nanoparticles? To what colour of visible light does this
correspond? Estimate a size for the gold nanoparticles formed.
Nanoparticles are often added to polymer matrix to enhance
various properties, the interaction with the polymer largely
determines the state of the nanoparticle in the polymer matrix.
Describe two of these state and one dispersing method that can
achieved the most desirable state.
please no hand writing
Compare the syntheses of magnetite nanoparticles using
thermal decomposition and by everyday chemicals in terms of
starting materials, reaction conditions, particle characteristics,
and environmental considerations.