In a study of biocompatibility, I have created a porous alumina surface by anodising aluminium in phosphoric acid, but I have read [ in Davis et al, Journal of Materials Science 17 (1982) ] that there might be an aluminium phosphate monolayer on the surface.I want to remove this AlPO4 layer, leaving the desired nanoporous alumina belowI have read on a safety sheet that the AlPO4 may be soluble in 'concentrated hydrochloric acid' or 'alcohol' but I'm concerned the HCl will etch the alumina or aluminium substrateAnd details for an 'alcohol' solvent are not specificed.So my question is how do I selectively dissolve / etch the aluminium phosphate leaving the porous alumina below?
i dont really know but u can tray scrubbing it off alpo4 being a salt should get removed easily, also maybe a dilute hlc should be able to remove it but im not that sure
