Charging of Dielectric Surfaces in Contact with Aqueous Electrolytes?the Influence of CO2

Publikationstyp:
Zeitschriftenaufsatz
Metadaten:
Autoren
  • Peter Vogel
  • Nadir Moller
  • Muhammad Nawaz Qaisrani
  • Pravash Bista
  • Stefan AL Weber
  • Hans-Jurgen Butt
  • Benno Liebchen
  • Marialore Sulpizi
  • Thomas Palberg
Autoren-URL
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000890651500001&DestLinkType=FullRecord&DestApp=WOS_CPL
DOI
10.1021/jacs.2c06793
eISSN
1520-5126
Externe Identifier
  • Clarivate Analytics Document Solution ID: 6P0UN
  • PubMed Identifier: 36354176
ISSN
0002-7863
Ausgabe der Veröffentlichung
46
Zeitschrift
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Paginierung
21080 - 21087
Datum der Veröffentlichung
2022
Status
Published
Titel
Charging of Dielectric Surfaces in Contact with Aqueous Electrolytes?the Influence of CO<sub>2</sub>
Sub types
  • Article
Ausgabe der Zeitschrift
144

Datenquelle: Web of Science (Lite)

Andere Metadatenquellen:
Autoren
  • Peter Vogel
  • Nadir Möller
  • Muhammad Nawaz Qaisrani
  • Pravash Bista
  • Stefan AL Weber
  • Hans-Jürgen Butt
  • Benno Liebchen
  • Marialore Sulpizi
  • Thomas Palberg
DOI
10.1021/jacs.2c06793
eISSN
1520-5126
ISSN
0002-7863
Ausgabe der Veröffentlichung
46
Zeitschrift
Journal of the American Chemical Society
Sprache
en
Online publication date
2022
Paginierung
21080 - 21087
Datum der Veröffentlichung
2022
Status
Published
Herausgeber
American Chemical Society (ACS)
Herausgeber URL
http://dx.doi.org/10.1021/jacs.2c06793
Datum der Datenerfassung
2023
Titel
Charging of Dielectric Surfaces in Contact with Aqueous Electrolytes─the Influence of CO<sub>2</sub>
Ausgabe der Zeitschrift
144

Datenquelle: Crossref

Abstract
The charge state of dielectric surfaces in aqueous environments is of fundamental and technological importance. Here, we study the influence of dissolved molecular CO<sub>2</sub> on the charging of three chemically different surfaces (SiO<sub>2</sub>, Polystyrene, Perfluorooctadecyltrichlorosilane). We determine their charge state from electrokinetic experiments. We compare an ideal, CO<sub>2</sub>-free reference system to a system equilibrated against ambient CO<sub>2</sub> conditions. In the reference system, the salt-dependent decrease of the magnitudes of ζ-potentials follows the expectations for a constant charge scenario. In the presence of CO<sub>2</sub>, the starting potential is lower by some 50%. The following salt-dependent decrease is weakened for SiO<sub>2</sub> and inverted for the organic surfaces. We show that screening and pH-driven charge regulation alone cannot explain the observed effects. As an additional cause, we tentatively suggest dielectric regulation of surface charges due to a diffusively adsorbed thin layer of molecular CO<sub>2</sub>. The formation of such a dynamic layer, even at the hydrophilic and partially ionized silica surfaces, is supported by a minimal theoretical model and results from molecular simulations.
Addresses
  • Institute of Physics, Johannes Gutenberg University, 55128Mainz, Germany.
Autoren
  • Peter Vogel
  • Nadir Möller
  • Muhammad Nawaz Qaisrani
  • Pravash Bista
  • Stefan AL Weber
  • Hans-Jürgen Butt
  • Benno Liebchen
  • Marialore Sulpizi
  • Thomas Palberg
DOI
10.1021/jacs.2c06793
eISSN
1520-5126
Externe Identifier
  • PubMed Identifier: 36354176
Funding acknowledgements
  • Deutsche Forschungsgemeinschaft: PA-459-19.1
  • European Research Council: 883631
  • Max-Planck-Gesellschaft:
  • Deutsche Forschungsgemeinschaft: PA-459-15.2
Open access
false
ISSN
0002-7863
Ausgabe der Veröffentlichung
46
Zeitschrift
Journal of the American Chemical Society
Schlüsselwörter
  • Water
  • Silicon Dioxide
  • Models, Theoretical
  • Hydrophobic and Hydrophilic Interactions
Sprache
eng
Medium
Print-Electronic
Online publication date
2022
Paginierung
21080 - 21087
Datum der Veröffentlichung
2022
Status
Published
Datum der Datenerfassung
2022
Titel
Charging of Dielectric Surfaces in Contact with Aqueous Electrolytes─the Influence of CO<sub>2</sub>.
Sub types
  • Research Support, Non-U.S. Gov't
  • Journal Article
Ausgabe der Zeitschrift
144

Datenquelle: Europe PubMed Central

Abstract
The charge state of dielectric surfaces in aqueous environments is of fundamental and technological importance. Here, we study the influence of dissolved molecular CO2 on the charging of three chemically different surfaces (SiO2, Polystyrene, Perfluorooctadecyltrichlorosilane). We determine their charge state from electrokinetic experiments. We compare an ideal, CO2-free reference system to a system equilibrated against ambient CO2 conditions. In the reference system, the salt-dependent decrease of the magnitudes of ζ-potentials follows the expectations for a constant charge scenario. In the presence of CO2, the starting potential is lower by some 50%. The following salt-dependent decrease is weakened for SiO2 and inverted for the organic surfaces. We show that screening and pH-driven charge regulation alone cannot explain the observed effects. As an additional cause, we tentatively suggest dielectric regulation of surface charges due to a diffusively adsorbed thin layer of molecular CO2. The formation of such a dynamic layer, even at the hydrophilic and partially ionized silica surfaces, is supported by a minimal theoretical model and results from molecular simulations.
Autoren
  • Peter Vogel
  • Nadir Möller
  • Muhammad Nawaz Qaisrani
  • Pravash Bista
  • Stefan AL Weber
  • Hans-Jürgen Butt
  • Benno Liebchen
  • Marialore Sulpizi
  • Thomas Palberg
Autoren-URL
https://www.ncbi.nlm.nih.gov/pubmed/36354176
DOI
10.1021/jacs.2c06793
eISSN
1520-5126
Ausgabe der Veröffentlichung
46
Zeitschrift
J Am Chem Soc
Schlüsselwörter
  • Silicon Dioxide
  • Water
  • Hydrophobic and Hydrophilic Interactions
  • Models, Theoretical
Sprache
eng
Country
United States
Paginierung
21080 - 21087
Datum der Veröffentlichung
2022
Status
Published
Datum, an dem der Datensatz öffentlich gemacht wurde
2022
Titel
Charging of Dielectric Surfaces in Contact with Aqueous Electrolytes─the Influence of CO2.
Sub types
  • Journal Article
  • Research Support, Non-U.S. Gov't
Ausgabe der Zeitschrift
144

Datenquelle: PubMed

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