title: Molecular level insight on the adsorption of carboxylic acids to oxide nanoparticles in aqueous solution by X-ray photoelectron spectroscopy.
abstract: We show, for the first time, the ability to follow the surface chemistry (acid-base equilibrium) of a colloid nanoparticle (AlxOy@SiO2) while simultaneously monitoring the adsorption of a solute molecule (HCOOH) from solution using in situ X-ray photoelectron spectroscopy. Based on the results of the Al 2p and C 1s spectra a mechanism is proposed.
authors.affiliation: Laboratory for Surface Science and Technology, Department of Materials, ETH Zürich, Switzerland. matthew.brown@mat.ethz.ch.
authors.forename: Giorgia
authors.initials: G
authors.lastname: Olivieri
authors.affiliation: Laboratory for Surface Science and Technology, Department of Materials, ETH Zürich, Switzerland. matthew.brown@mat.ethz.ch.
authors.forename: Alok
authors.initials: A
authors.lastname: Goel
authors.affiliation: Laboratory for Surface Science and Technology, Department of Materials, ETH Zürich, Switzerland. matthew.brown@mat.ethz.ch.
authors.forename: Matthew A
authors.initials: MA
authors.lastname: Brown