4. (a) (b) Answer ALL parts. Describe four factors that affect sol-gel synthesis. [8 marks] Describe the reaction of nan

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4 A B Answer All Parts Describe Four Factors That Affect Sol Gel Synthesis 8 Marks Describe The Reaction Of Nan 1 (65.04 KiB) Viewed 9 times

4. (a) (b) Answer ALL parts. Describe four factors that affect sol-gel synthesis. [8 marks] Describe the reaction of nanoparticulate titanium dioxide with light. What are the requirements for nanoparticulate TiO2 to be used as a semiconductor photocatalyst. [14 marks] Properties of materials change going from bulk to the nanoscale. Describe two such properties that are affected going from bulk to nanoscale. [8 marks] Explain in detail two methods of preparing graphene for mass production. Give the advantages and disadvantages of each method. [10 marks] (C) (d)