Does anyone know of a vendor (sigma-aldrich, etc.) that sells porous silica particles with known pore size? Known particle size would also be preferable, but the more important known parameter would be pore size.
I have obtained some from https://www.acsmaterial.com/sba-15-20g-1131.html
They, also carry a range of products, that link is just to the one I have.
average particle size calculation from TEM
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