nanoparticles and fullerenes

What does nano mean

very small

Are nanoparticles bigger or smaller than atoms

bigger, they contain a few hundred atoms

what size are nanoparticles

anywhere within the range of 1-100 nanoparticles

Nanoparticles have a ____________________ ratio

Nanoparticles have a HIGH SURFACE AREA TO VOLUME ratio

What does high surface area to volume ratio mean

as the particles decrease in size, the size of their surface area increases in relation to their volume. This means that when they are very small, they have a higher surface area than their volume.

Conversion table

Catalyst use of fullerenes

the high SA:V ratio means that more collisions occur on the surface of the catalyst

Cosmetics use of fullerenes

Small nanoparticles provide better sunscreen protection because they spread more quickly and easily

Nanomedicines use of nanoparticles

nanoparticles can form fullerines which are used for delivery of drugs as they are easily absorbed by the body

lubricans uses of fullerenes

fullerenes can be used in artificial joints or gears

electrical circuits uses of nanoparticles

nanotubes (graphite) can conduct electricity and so are used in computer chips

properties of nanotubes

• have a high length the diameter ratio

• have a high tensile strength (they don’t break easily when stretched

• have high melting and boiling points

• are able to conduct electricity and thermal energy

What are fullerenes

hollow carbon structures shaped like empty tubes or balls

What are fullerenes mainly made up of

hexagonal rings of carbon atoms

What was the first fullerene discovered

buckminster (C₆₀)