i am looking for the time dependence of hummers method, how long should i proceed the reaction before quenching with h2o2
Dear Amal T Babu, the effect of oxidation time on the quality of the obtained graphene oxide from Hummer's method has been investigated and reported previously in a paper published in "Ceramic International". As reported here, the oxidation time does not exert any effect on the chemical structure of the final GO but rather controls the degree of exfoliation significantly. To the best of my knowledge, in most cases, it is preferred to let the reaction proceed for 12 hours in order to ensure the highest oxidation degree and the highest degree of exfoliation. However, when it comes to me, I prefer to synthesize GO using improved Hummer's method (Tour's Method) which yields highly hydrophilic, well-exfoliated GO nanosheets with the lowest unreacted graphite content. I have modified some parts of this method for getting a higher quality of GO and reported its procedure in the following paper. Hope you find it useful.
Article Increasing Reaction Time in Hummers’ Method towards Well Exf...
Article Self-assembled graphene-based microfibers with eclectic opti...
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