Producing High-Quality Graphene Cheaply Using Carbon Monoxide

SciTechDaily ^ | May 16, 2022

[upchuck]

Researchers have proposed the first graphene synthesis technique that utilizes carbon monoxide as the carbon source. It is a fast and cheap way to produce high-quality graphene with relatively simple equipment for use in electronic circuits, gas sensors, optics, and beyond. The study was published in the prestigious journal Advanced Science by researchers from Skolkovo Institute of Science and Technology (Skoltech), Moscow Institute of Physics and Technology (MIPT), the RAS Institute of Solid State Physics, Aalto University, and elsewhere.

Chemical vapor deposition (CVD) is the standard technology for synthesizing graphene, the one-atom-thick sheet of carbon atoms in a honeycomb arrangement with unparalleled properties useful for electronics applications and more. CVD usually involves carbon atoms breaking off gas molecules and settling on a substrate as a monolayer in a vacuum chamber. Copper is a popular substrate, and the gases used have always been hydrocarbons: methane, propane, acetylene, spirits, etc.

[upchuck]

H/T red badger.

Welcome Kevmp and Samurai_Jack.

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Interesting: 10 Uses for Graphene.

[Scram1]

“A single crystal graphene synthesis is a result of a thorough kinetic study for the mechanisms of grain nucleation and growth. When working with copper foils, we have observed the graphene nucleation to be extremely sensitive to the surface roughness or impurities; we even observed the formation of the multilayer graphene (see Figure S4, Supporting Information). This is why we replaced the copper foil with a similar pure solidified[14, 15] copper pellet on top of a molybdenum foil (acting as a wetting layer by heating to 1135 °C and cooling to 1085 °C) and added a procedure of CO2 annealing during the melting phase for additional copper cleaning. It should be stressed that we observed no traces of carbon species on Cu after CO2 annealing with XPS and Raman spectroscopy. Thereby, the rate of graphene nucleation was reduced by recrystallization of copper by several orders of magnitude reaching 102–103 cm−2s−1 while no impurities leading to multilayer graphene were observed as well.”

[ckilmer]

interesting. would be cool if it worked as advertised at scale.

[Riflema]

Beyond cool. If doable it brings the real 4th industrial revolution in areas such as energy storage, space exploration and many others.

And the "gas station with nukes" was one of the first there?

[Riflema]

LOL, turns out they really do think like gas station guys! "Since vacuum is no longer needed, the equipment not just works faster but also becomes cheaper. “Once you drop the high-end hardware for generating ultrahigh vacuum, you can actually assemble our garage solution for no more than $1,000,” the researcher stresses."

[ckilmer]

My favorite is water desalination. Because it will lower desalination costs sufficient to make desalination costs cheap enough for desert agriculture. That would effectively double the size of habitable earth.

[mabarker1]

Does this mean they are going to make some kind of weird Oreo ?

[Scram1]

Almost molecular self assembly on a nano scale using two
different elements. Inexpensive to make without the need
for special vacuum chambers. Looks to be a really good
heat transfer structure for chips or solar cells IMHO.
Defect free as claimed here is very good high tier science.