We have a glass reactor to have a silica surface modification. We introduce a solution of silica in TMB and start stirring. But after a while silica is attached to the wall. Do you have an idea why it happens?
Dear Nazli,
what is "TMB"? I guess, you work with a suspension of silica nanoparticles?
Glass, as well as silica particles, have an surface being rich of -OH. Hence, Silica adheres to the glass surface or even reacts with by forming Si-O-Si bonds.
I don't know your reaction conditions and parameters, so the only advise I can give is: Change the reactor material, if possible (poly ethylene or an comparable material).
Best regards
Bernd
You should try to comprehensively characterize the media you are referring to; it is not clear how silica (seemingly nano or micro particles; powdered or previously dispersed somehow ― perhaps some commercial aqueous dispersion) were intended to render a stable colloidal dispersion/microemulsion in just 1,3,5-trimethylbenzene (TMB), even if not in contact with the hydrophilic container material (glass).
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