Cheap 2D material removes 99.99% bacteria from 10 liters of water in an hour using only sunlight
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Scientists have developed an inexpensive water purification system in which carbon nitride, when exposed to sunlight, kills 99.9999% of bacteria, including E. coli. Cleaning 10 liters takes about half an hour.
In the presented system, researchers from Yangzhou University used two-dimensional sheets of graphite-like carbon nitride as an internal photocatalyst. Direct sunlight light material generates electrons, which interact with oxygen in water to create compounds that destroy bacteria.
Although there are now other cleaning systems based on similar chemical processes, but they use photocatalysts, which during operation leave harmful substances as a by-product. However, they also take much longer to disinfect..
According to scientists, their system is ten times more efficient than other alternatives with non-metallic photocatalysts. The team is currently working on placing the invention in portable containers so that they can be used in regions with a shortage of drinking water around the world..
Recall that American engineers have also developed a new technology for the production of filtration membranes from bacterial nanocellulose and graphene, which are able to effectively purify water and have unique antibacterial properties
text: Ilya Bauer, photo: nicstroy