I'm having a hard time understanding why someone shouldn't make this at home. This sounds like the perfect experiment I could run with the kids to get them excited about material science. It doesn't need to be a perfect layer of graphene, even a sludge would be good to show them, get them brainstorming about how they would separate out the sludge. Is there a real reason other than difficulty, why someone shouldn't tr…
So much FUD in this thread. Nobody actually has cancer from working with nanoparticles. Researchers have been making carbon nanotubes for years and none of them have cancer.
There probably wouldn't be. I doubt they could be much worse than asbestos or cigarette smoke or coal dust, which on a couple minutes' research looks like it would be hard to notice anything until there's been a large group with many years of continuous exposure. (OTOH, being "nano" means they're new and unknown and so increases the scariness factor a bit.)