According to several articles, increasing the reaction time leads to get smaller GO sheets because of the oxidation-induced cutting (continuous mechanical stirring throughout the whole process causes the cracking of sheets. The oxidation is also driven by the diffusion of oxidant from edges to sheets center which further leeds to the creation of localized stress regions thus to sheets cracking. GO sheets with a high concentration of oxygen groups have a strong tendency to disintegrate into smaller fragments...etc).
However according to this article, allowing the reaction to take a longer time (2 days, 3 days) leads to get larger sheets than that of only one day.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3260037
So do you think this result is right? if yes how this can be explained?
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