Hello,
I have just begun synthesizing graphene oxide with hummers method, but I got some sort of explosion (probably due to Mn2O7 formation). Is there any way to avoid quitting the experiment because of health risks? I mean there has formed an upper phase of oil like liquid (Mn2O7) and if I now would add water or increase the temperature to 35C i'm afraid of another explosion. Any suggestions how to avoid a big explosion and further using the reaction??
Here a video of the explosion:
https://photos.app.goo.gl/mMMEeFn4WOV1RqRd2
Sorry for the cat in the background, it wasnt supposed her to come in, i later recognized her. This on the paper was only a demo, the explosion in the left when inserting the pipet was not planned. You can see there loads of expanded graphene oxide flying around, which was pretty nasty to tidy up.
Thanks for your suggestions.
~André
Dear Andre,
Please clear your experiment procedure and which stage this explosion happened and also after what addition this was happened. If you mention all, then it will be very to understand the problem and the suggestion also.
Are you doing the experiment in ice-bath (below -5 deg C or 0 deg C)?
Best Regards,
Bapi
Pl. be more clear in asking the question. Is it that inadvertently you added water to strong acid. Pl. Check.
This method results in greater exothermic reaction, so in order to main the reaction undercontrol the reaction is to be maintained using ice Cubes around the flasks.
if you don't maintain the temperate undercontrol explosion happens.
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