Question
Write a short note on the catalytic activity of nanoparticles.
✓
Answer
Catalytic activity of nanoparticles:
- Due to an increase in surface area with a decrease in particle size, nanomaterial-based catalysts show increased catalytic activity.
- Usually, they are heterogeneous catalysts that mean catalysts are in solid form and the reactions occur on the surface of the catalyst.
- Nanoparticle catalysts can be easily separated and can be recycled.
e.g. Pd, Pt metal nanoparticles used in hydrogenation reactions.
$TiO_2, ZnO$ are used in photocatalysis.
Gold in bulk form is unreactive, but gold nanoparticles are found to be a very good catalyst for various organic reactions.
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