Graphene is one of those amazing materials that has multiple applications while still being inexpensive enough that developing applications based on it doesn’t break your wallet.
Among it’s other fascinating applications, graphene can also be used as a filtration agent to clean out impurities form a host of sources.
One of these materials is water itself, and now researchers from Washington University have found a way to utilize this application for this very specific purpose.
The formulation of this application comes in the form of Biofoam Sheets that can be laid on top of dirty and salty water bodies in order to purify them.
These sheets work with the help of a dual-layer design that draws up water from underneath and then causes it to evaporate in the uppermost layer.
By doing so, it is able to hold back the harmful particles and salt between the layers, while releasing the fresh water as condensation on the top.
In order to maximize the efficiency of the process, a layer of graphene oxide is placed within the top layer, so that the heat of the sun doesn’t leak below.
The lower layer, on the other hand, uses an organic compound called pristine cellulose to draw up the water, which is an integral part of the filtration process.
Between these two layers, the system efficiently and rigorously goes through all the imperfections, making sure the water is good enough to drink right there and then.
The hope behind the development of this technology is to create a new range of filtration devices that are both cheap and effective, so that they can help solve the problem of water contamination across the globe.