graphene - Man's saviour?

[Blackpuddin]

Here's a video explaining why the 'wonder material' graphene hasn't yet revolutionised our lives.
https://www.youtube.com/watch?v=IesIsKMjB4Y
Obviously, R&D in this exciting new area takes time, and understandably the headline research money seems to be mainly going into profitable tech products, but graphene's potential to make seawater drinkable is surely the thing we should investing most heavily in? Does anybody know if any serious work is going on in this area?
http://www.manchester.ac.uk/discover/news/graphene...

[otolith]

Their use in making better desalination membranes looks good, but it's an incremental improvement on an existing technology. I mean, you can already buy consumer grade units;

https://www.uk-water-filters.co.uk/water_filters_r...

A better membrane for desalination may have a significant effect on the economics of it, but the process is still going to require a lot of energy. It's not a magic bullet for water shortage.