What is nano material? Write the reaction involved in sol-gel process during hydrolysis.
Q.5 What is nano material? Write the reaction involved in sol-gel process during hydrolysis.
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Nanomaterial: A material having at least one dimension (length, breadth or thickness) in the range of 1 nm to 100 nm is called a nanomaterial. Such materials show properties different from the bulk material.
Hydrolysis step of the sol-gel process: the metal alkoxide precursor is hydrolysed by water to the metal hydroxide:
M–OR + H2O → M–OH + R–OH (M = metal, R = alkyl group)
e.g. Ti(OR)4 + 4H2O → Ti(OH)4 + 4ROH. The M–OH groups then condense (M–OH + HO–M → M–O–M + H2O) to form the gel.
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· 29 Oct 2026
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