Direct production of highly conductive graphene with a low oxygen content by a microwave-assisted solvothermal method

Synthesis of graphene oxide and graphene quantum dots from miscanthus via ultrasound-assisted mechano-chemical cracking method

“…The chemical method involves oxidising graphite by introducing oxygen into the layered structure in the form of carboxyl, carbonyl, hydroxyl and/or epoxide functional groups [9] , [14] . These oxygen-containing functional groups increase the interlayer spaces within graphite and facilitate the delamination of nanocrystalline graphene oxide [15] . The Hummers’ method is a well-studied example [16] .…”

Green and facile production of high-quality graphene from graphite by the combination of hydroxyl radicals and electrical exfoliation in different electrolyte systems

“…Since Geim et al 6 obtained a single layer of graphene by mechanical stripping in 2004, many other methods for preparing graphene have also been developed. At present, the most popular methods for the preparation of graphene include micromechanical stripping, [7][8][9][10][11] ball milling, [12][13][14] chemical vapor deposition, [15][16][17][18] solvothermal method, [19][20][21] liquid phase exfoliation 22,23 and oxidation-dispersion. [24][25][26][27][28][29] The above preparation methods oen employ aggressive reagents and are restricted by the relatively high energy consumption, complex operation, environmental pollution, occasional low yields and poor product quality.…”

Synthesis of flexible pure graphene papers and utilization as free standing cathodes for lithium-air batteries

“…However, after reduction of the GO, oxygen content of papers are dramatically decreased and C/O atomic ratio was found 2.462, 2.381 and 2.286 for the 10G, 30G and 50G, respectively. This low oxygen content of reduced GO demonstrates the efficiency of the reduction process [23].…”