| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 594201 | Colloids and Surfaces A: Physicochemical and Engineering Aspects | 2012 | 7 Pages |
Abstract
⺠Cysteine is adsorbed onto TiO2 from aqueous solutions and the binding constants point to an electrostatic adsorption. ⺠Cysteine speciation and the surface charge density changes with the pH values. ⺠At pH 2.0, cysteine is adsorbed in the fully protonated and zwitterionic forms. ⺠Adsorption of cysteine produces a decrease in pKa1(COOH) value from 1.96 to 1.37. ⺠At pH 8.0, electrostatic interactions change the spatial cysteine orientation.
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Physical Sciences and Engineering
Chemical Engineering
Colloid and Surface Chemistry
Authors
S. Begonja, L.A. GarcÃa Rodenas, E.B. Borghi, P.J. Morando,