Could using carbon dioxide to make graphene be useful?
“A working group of the Karlsruhe Institute of Technology (KIT; Karlsruhe, Germany) is using carbon dioxide as a starting material to produce graphene, according to the researchers’ report in the journal ChemSusChem.
The scientists say they have developed a process in which the greenhouse gas carbon dioxide (CO2), together with hydrogen, is directly transferred into the technology material graphene with the aid of specially prepared, catalytically active metal surfaces at temperatures of up to 1,000°C.
“If the metal surface has the right balance of copper and palladium, the conversion of carbon dioxide to graphene will take place directly in a simple one-step process,” says study leader Professor Mario Ruben of the Molecular Materials Working Group at the Institute of Nanotechnology (INT; Evanston, Ill., U.S.) and at the Institute of Inorganic Chemistry (AOC) of KIT.
In further experiments, the researchers produced the graphene with several layers of thickness, targeting possible applications in batteries, electronic components or filter materials. The next research goal of the working group is to shape functioning electronic components from the graphene obtained.”
“A straightforward one‐step process was developed, in which CO2 gas is directly converted into multi‐layer graphene via atmospheric pressure chemical vapor deposition (APCVD). A bimetallic alloy film based on Cu and Pd was employed as the catalyst and substrate. In this study, we found that the quantity of Cu required for the CO2 conversion process is high (>82 at %). The findings gained in this study serve as a foundation for further studies of metallic alloys for the thermo‐reduction of CO2 to graphene under CVD conditions.”
Read full article KIT produces graphene from carbon dioxide
Source: Composites World
Image: Carbon dioxide (red-black) and hydrogen (gray) react catalytically on copper-palladium surfaces to form the technology material graphene (black). Source | E. Moreno-Pineda at KIT, via Springer lightweight.design magazine