| Graphene oxide (13) |  |
Under the guidance of Canada Research Chair in Materials science with Synchrotron radiation Dr. Alexander Moewes University of Saskatchewan researcher Adrian Hunt spent his Phd investigating graphene oxide a cutting-edge material that he hopes will shape the future
To understand graphene oxide it is best to start with pure graphene which is a single-layer sheet of carbon atoms in a honeycomb lattice that was made first in 2004 by Andre Geim
Graphene oxide the focus of Hunt's Phd work has forced oxygen into the carbon lattice which makes it much less conductive but more transparent and a better charge collector.
Graphene oxide is fairly chaotic. You don't get a nice simple structure that you can model really easily but
I wanted to model graphene oxide and understand the interplay of these parts. Previous models had seemed simplistic to Hunt
and he wanted a model that would reflect graphene oxide's true complexity. Each different part of the graphene oxide has a unique electronic signature.
Using the synchrotron Hunt could measure where electrons were on the graphene and how the different oxide groups modified that.
Moreover he studied how graphene oxide decays. Some of the oxide groups are not stable and can group together to tear the lattice;
If graphene oxide device has water in it and it is heated up the water can actually burn the graphene oxide and produce carbon dioxide.
It's a pitfall that could be important to understand in the development of long-lasting solar cells where sun could provide risky heat into the equation.
A Re evaluation of How Functional Groups Modify the Electronic Structure of Graphene oxide. Advanced Materials (2014.
and the biggest hindrance of such methods is the difficulty of washing the graphene oxide due to its high hydrophilic property.
"Also, the graphene oxide will regenerate before the washing process and in the presence of oxidizers
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