3 You have been tasked with characterising a nanoparticle-polymer composite designed for water treatment using photocata

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3 You have been tasked with characterising a
nanoparticle-polymer composite designed for water treatment using
photocatalysis. To test the effectiveness of the composite, it is
dispersed in a solution of water containing a coloured dye under
illumination by a solar simulator for a set period of time. In
answering this question, select one technique for each part (a-e)
from those techniques taught in the CAPE2710 module this academic
year. For each part: - Describe the principle and relevance of the
chosen technique. - Detail the required sample preparation. -
Describe any relevant limitations of the technique to addressing
this problem. - Detail how the data would be analysed. Describe how
you would determine: (a) The primary particle size of the
nanoparticles and the degree of agglomeration of the nanoparticles
in the polymer matrix. [4 marks] (b) The nature of the polymer
matrix in terms of its structure and chemistry. [4 marks] (c) The
phase of the metal nanoparticles and whether they have become
oxidised. [4 marks] (d) Whether the nanoparticles have a coating on
their surface to improve their stability within the polymer, and if
so, the identity of the coating. [4 marks] (e) How you could
monitor if the composite was having the desired effect of removal
of the dye. [4 marks]