I didn't find any strong warning about graphite oxide, but I don't know the compound. If you decide to use it find someone with experience in the laboratory, be careful and RTFSL.
Just a guess- and I could be completely wrong on this, but graphite spray that you use for locks (also has alcohol or some other quick-evaporating liquid in it) might do the trick.
I'm going to mess with this some today. Will report back results. I wonder how long you have to "cook" it with the laser for? I'm also imagining that I'll want to flip the DVD drive upside down so I can keep the liquid mostly in place. Wondering how the spinning will effect it as well.
This is going to be a hell of a messy experiment.
About a year ago I heard how good of a filter for water graphene is, so I bought graphenewater.com. If this is an easier way to make large amounts of graphene, I just might have to put this to use.
After a little googling I found a store: https://graphene-supermarket.com/Graphene_Oxide/Solutions/ (I'm not affiliated with them. I don't ever know them. Verify they are legit.)
I didn't find any strong warning about graphite oxide, but I don't know the compound. If you decide to use it find someone with experience in the laboratory, be careful and RTFSL.