Fast, efficient and large scaple production for few layer graphen

Graphene were initially synthesizing using time consuming and inefficient methods, however fast and efficient methods are coming to surface gradually. Wenbo Lu et al team developed a methods to make graphene in seconds using chlorosulfonic acid and H2O2 as exfoliating agents 

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Graphene layers to replace conventional reverse osmosis membranes

The single layer graphene is being tested for each and every field!

David Cohen-Tanugi  et al of Department of Materials Science and Engineering, Massachusetts Institute of Technology have been tested the potential of using nano-size pores (holes) to filter out NaCl from sea water, which is conducted using many conventional reverse osmosis membranes. Their analysis on pore size, chemical functionalization, and applied pressure proved that water permeability and quality of out put of this material is several orders of magnitude higher than conventional reverse osmosis membranes

Read the full article on: http://pubs.acs.org/doi/abs/10.1021/nl3012853

A study on strain-induced pseudomagnetic fields of Graphene

Researches taking control of Graphene, now they are trying to play with it as it is a drum! :-)

Nikolai N. Klimov et al scientists working at the National Institute of Standards and Technology (NIST) and the University of Maryland found a fascinating finding which allow them to dig a new path for graphene to serve in new electronic devices. They successfully analysis how strain effects on its electromagnetic properties which open a door for lot of potentials in its uses.

Read the full text on Scinece: http://www.sciencemag.org/content/336/6088/1557

Extraordinary fast synthesis method of graphene – Microwave based - nitronium ions enabled

Currently researchers are using Hummers method[1] or improved graphene oxide[2] synthesis routing to preparation of graphene oxide. But unfortunately these conventional methods is consisted with disadvantages of slash sheets into small pieces and/or occurrence of nanometer-sized holes in the basal plane. As we experience these conventional methods are time consuming too.

Chiu P. L et al recently (March 2, 2012) reported an extraordinary fast and scalable approach to avoid above problems.  KMnO4 has intentionally removed from the process, and microwave heating has been utilized to combine its unique properties with aromatic oxidation by nitronium ions.

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Ref:

1.             Hummers, W.S. and R.E. Offeman, Preparation of Graphitic Oxide. Journal of the American Chemical Society, 1958. 80(6): p. 1339-1339.

2.             Marcano, D.C., et al., Improved Synthesis of Graphene Oxide. Acs Nano. 4(8): p. 4806-4814.

interfacial adhesive energy of the synthesized graphene revealed and preparation of it made easy

Groundbreaking research by Prof. Taek soo Kim and Prof. Byung Jin Cho's research teams have measured interfacial adhesive energy of the synthesized graphene and developed method to separate synthesized graphene from the metal surface which used to making it. Earlier methods used to melt away used metal platform, with cost of material and environmental damages.

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