Publication Details
Category Text Publication
Reference Category Journals
DOI 10.1039/c6cc07525h
Title (Primary) Adsorption of perfluorocarboxylic acids at the silica surface
Author Shafique, U.; Dorn, V.; Paschke, A.; Schüürmann, G.
Source Titel Chemical Communications
Year 2017
Department OEC
Volume 53
Page From 589
Page To 592
Language englisch
UFZ wide themes RU3;
Abstract

Water molecules may force the hydrophobic perfluoroalkyl chain of perfluorocarboxylic acids (PFCAs) to aggregate at hydrophobic siloxane patches ([triple bond, length as m-dash]Si–O–Si[triple bond, length as m-dash]) of the silica surface despite electrostatic repulsion between surface silanol ([triple bond, length as m-dash]SiO−) and the carboxylate (–COO−) headgroup of PFCA. Acidic pH and background cations promote the adsorption further by reducing the anion–anion Coulomb repulsion.
Shafique, U., Dorn, V., Paschke, A., Schüürmann, G. (2017):
Adsorption of perfluorocarboxylic acids at the silica surface
Chem. Commun. 53 , 589 - 592 10.1039/c6cc07525h