Basic method and the others?
I fabricated Al/MLGO/p type Si Schottky Diodes. But I have a problem about electrical characterizations.
Graphene oxide can be synthesised by different chemical production methods.like hummer's method. modified hummer's method , improved Hummer's method, fast and facle method, brodie method etc..it depends on your applications , for which applications you are doing synthesis process.
basically it is just oxidation (brodie, hummers) and exfoliation after (microwaves, ultrasonic, temperature). also some nice DIY methods exists like http://jenslabs.com/2013/03/14/diy-graphene/
This is a good article:
Improved Synthesis of Graphene Oxide
Daniela C. Marcano,† Dmitry V. Kosynkin,† Jacob M. Berlin, Alexander Sinitskii, Zhengzong Sun, Alexander Slesarev, Lawrence B. Alemany, Wei Lu, and James M. Tour*
Departments of Chemistry, Mechanical Engineering and Materials Science, and the Smalley Institute for Nanoscale Science and Technology, Rice University, MS 222,
6100 Main Street, Houston, Texas 77005. †These authors contributed equally to this work.
ABSTRACT An improved method for the preparation of graphene oxide (GO) is described. Currently, Hummers’ method (KMnO4, NaNO3, H2SO4) is the most common method used for preparing graphene oxide. We have found that excluding the NaNO3, increasing the amount of KMnO4, and performing the reaction in a 9:1
mixture of H2SO4/H3PO4 improves the efficiency of the oxidation process. This improved method provides a greater amount of hydrophilic oxidized graphene material as compared to Hummers’ method or Hummers’ method with additional KMnO4. Moreover, even though the GO produced by our method is more oxidized than that prepared by Hummers’ method, when both are reduced in the same chamber with hydrazine, chemically converted graphene (CCG) produced from this new method is equivalent in its electrical conductivity. In contrast to Hummers’ method, the new method does not generate toxic gas and the temperature is easily controlled. This improved synthesis of GO may be important for large-scale production of GO as well as the construction of devices composed of the subsequent CCG.
For easy and effective synthesis of GO, you can explore this link
http://www.instanano.com/nanomaterial-synthesis/carbon-nanomaterial/synthesis-graphene-oxide-hummers-method/
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