4.2.4.2 - Uses of nanoparticles.

List where nanoparticles have applications in? (uses in)

Nanoparticles have many applications in:

• medicine

• electronics

• cosmetics and sun creams

• deodorants

• as catalysts.

What property makes nanoparticles good catalysts?

Having a high surface area to volume ratio.

What makes nanoparticles good in cosmetics and sun creams?

Idea that tiny particles are absorbed more easily into the body

How can nanoparticles be used in medicine?

Used to deliver drugs in the body

How can nanoparticles be used in electronics?

Nanoparticles can conduct electricity

So can be used in tiny electric circuits

How can nanoparticles be used for clothing in medicine?

Silver nanoparticles have antibacterial properties

These can then be added to polymer fibres that are used to make surgical masks / wound dressings

Why is it important to thoroughly test new products containing nanoparticles?

It’s important that new products containing nanoparticles are tested thoroughly as their affect on the body isn’t fully understood

Why are nanoparticles being used in sun creams?

Nanoparticles are being used in sun creams as they are better at protecting the skin from harmful UV rays compared to traditional sun creams and have better skin coverage

What is the risk of using nanoparticles in sun creams?

The possibility they might get into out body and damage cells +  can get washed away and damage surrounding environments