Does the number of layers of deposited graphene oxide thickness determine electrochemical (EC) performance of Glassy Carbon electrode? If you say electrodeposit a thicker layer is that good or bad for EC sensing performance? I have seen people drop graphene oxide solution on GCE and dry it with IR source. But isn't single layered graphene sheets best or else won't it be just layered graphite?
Monolayer graphene oxide on GCE will be the ideal electro-chemical sensor... thicker the graphene (the so-called graphene nanosheets), less will be its EC performance.
Some papers by Martin Pumera of NTU, Singapore.. showed that the impurities in Graphene Oxide(both metallic impurities and remnant amorphous carbon impurities) are more responsible for electrochemical activity of GO rather than graphene..
Monolayer graphene oxide on GCE will be the ideal electro-chemical sensor... thicker the graphene (the so-called graphene nanosheets), less will be its EC performance.
Some papers by Martin Pumera of NTU, Singapore.. showed that the impurities in Graphene Oxide(both metallic impurities and remnant amorphous carbon impurities) are more responsible for electrochemical activity of GO rather than graphene..
Check out this paper-Electrochemistry Communications Volume 13, Issue 2, February 2011, Pages 133–137. They electrodeposit the graphene for 18 cycles and then u get a thicker layer...but EC performance seems to go up!! Kinnda quaint that no one reports the point where EC performance goes down.
We developed a job with GO and graphene films with only one study electrochemical characterization supported on glassy carbon. Published in. This study comprises different loading on the surface evaluated by cyclic voltammetry and electrochemical impendance produced. Graphene and GO was produced by conversion chemistry.
http://pubs.rsc.org/en/content/articlepdf/2013/ra/c3ra40412a
Hope this helps
Dear fabio lima we dont have this access for this paper can u send to my mail id [email protected]
Hello Fabio,
I was wondering if you can send me the paper too? I know this thread is in 2013. But the paper is interesting. thank you.
My email is [email protected]
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