Scientist from the RMIT University, Melbourne, has been able to come up with a technique that can effectively change over CO2 from a gas into strong particles of carbon. This could change our way to deal with carbon caption and storage.
The research, published in the journal Nature Communications, offer an alternative pathway for safely and permanently removing the greenhouse gas from our atmosphere
Current innovations for carbon caption and storage center around compressing CO2 into a fluid structure, transporting it to an appropriate site and infusing it underground.
Be that as it may, usage has been hampered by designing difficulties, issues around financial viability and natural worries about conceivable holes from the capacity destinations.
New way of changing over CO2
RMIT analyst Dr Torben Daeneke said changing over CO2 into a solid carbon could be an increasingly supportable techniques.
“While we can’t actually turn back time, transforming carbon dioxide again into coal and covering it back in the ground is somewhat similar to rewinding the outflows clock,” said Daeneke, an Australian Research Council DECRA Fellow.
To date, CO2 has just been changed over into a solid carbon at very high temperatures, making it mechanically unviable.
By using liquid metals as a catalyst, we’ve appeared to be able to transform carbon dioxide once more into carbon at room temperature, in a procedure that is effective and versatile,” he said.
“While more research should be done, it’s an urgent initial step to conveying solid storage of carbon,” Daeneke included.
How it works
Lead author Dr Dorna Esrafilzadeh developed the electrochemical technique to capture and convert atmospheric CO2 to storable solid carbon.
- To convert CO2, the researchers designed a liquid metal catalyst with specific surface properties that made it extremely efficient at conducting electricity while chemically activating the surface.
- The carbon dioxide is dissolved in a beaker filled with an electrolyte liquid and a small amount of the liquid metal, which is then charged with an electrical current.
- The CO2 slowly converts into solid flakes of carbon, which are naturally detached from the liquid metal surface, allowing the continuous production of carbonaceous solid.
Esrafilzadeh said the carbon produced could also be used as an electrode.