IGNOU MPHE 27 2026 - Draw the LaMer diagram and explain the particle growth in its th

Question

Draw the LaMer diagram and explain the particle growth in its three regions.

19 Jan 2026

Answer :

Word Count : 269

The LaMer diagram describes the temporal evolution of solute concentration during nanoparticle synthesis and explains how controlled nucleation and growth lead to uniform particle sizes. It plots solute concentration versus time and is divided into three characteristic regions that govern particle formation. A schematic representation is shown below: Solute concentration ^ | _________ | / \ | / \ |_____/ _____> Time I II III In the first region, the solute concentration increases steadily due to precursor decomposition, reduction, or hydrolysis. No particles

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