Naked Science Forum

Non Life Sciences => Physics, Astronomy & Cosmology => Topic started by: thedoc on 21/07/2012 17:30:01

Title: Could graphene oxide act as a liquid water filter?
Post by: thedoc on 21/07/2012 17:30:01

Craig Marshall  asked the Naked Scientists:
   
I just listened to the report in last week's podcast (http://www.thenakedscientists.com/HTML/podcasts/) on using the properties of graphene oxide to separate water from whatever is dissolved in it.  

The report seemed to focus on covering a container and having the non-water contents evaporate out through the graphene oxide membrane, leaving the water.  I was wondering if it would be possible, and easier, to use the graphene oxide as a filter and pour the liquid through it.  It seems the water would go right through, leaving everything else, much faster than it would take for evaporation.
 
I would like to have something like this for filtering water while camping.
 
Thanks for a great show. (http://www.thenakedscientists.com/HTML/podcasts/)
 
Craig Marshall
Fort Mill, South Carolina, USA

What do you think?

Title: Re: Could graphene oxide act as a liquid water filter?
Post by: kenhikage on 21/07/2012 19:38:37

I may be completely wrong in this, but I think that graphene absorbs H2O
http://www.springerimages.com/Images/RSS/1-10.1186_1556-276X-6-214-0