Ion adsorption on metal oxide surfaces to hydrothermal conditions

D. J. Wesolowski; M. L. Machesky; M. K. Ridley; D. A. Palmer; Z. Zhang; P. Fenter; M. Předota; P. T. Cummings

doi:10.1149/1.2939086

Ion adsorption on metal oxide surfaces to hydrothermal conditions

D. J. Wesolowski, M. L. Machesky, M. K. Ridley, D. A. Palmer, Z. Zhang, P. Fenter, M. Předota, P. T. Cummings

Geosciences

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

3 Scopus citations

Abstract

In this article, we review the sorption of multivalent cations on rutile (α-TiO₂) powder surfaces in aqueous 1:1 electrolyte media from room temperature to 250°C. All cations are shown to occupy 'inner sphere' sorption sites in contact with surface oxygens and hydroxyl groups, as well as the diffuse portion of the electrical double layer (EDL). Sorption is shown to increase strongly with increasing temperature, and the sorption affinity is strongly-related to cation radius and charge. Macroscopic powder pH-titration results obtained with ORNL's high temperature hydrogen electrode concentration cells can be rationalized with Gouy-Chapman-Stern models of the EDL, augmented by atomic-scale structural and proton affinity data from synchrotron X-ray studies and computational modeling approaches.

Original language	English
Title of host publication	ECS Transactions - Interfacial Electrochemistry and Chemistry in High Temperature Media
Pages	167-180
Number of pages	14
Edition	27
DOIs	https://doi.org/10.1149/1.2939086
State	Published - 2008
Event	Interfacial Electrochemistry and Chemistry in High Temperature Media - 212th ECS Meeting - Washington, DC, United States Duration: Oct 7 2007 → Oct 12 2007

Publication series

Name	ECS Transactions
Number	27
Volume	11
ISSN (Print)	1938-5862
ISSN (Electronic)	1938-6737

Conference

Conference	Interfacial Electrochemistry and Chemistry in High Temperature Media - 212th ECS Meeting
Country	United States
City	Washington, DC
Period	10/7/07 → 10/12/07

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Wesolowski, D. J., Machesky, M. L., Ridley, M. K., Palmer, D. A., Zhang, Z., Fenter, P., Předota, M., & Cummings, P. T. (2008). Ion adsorption on metal oxide surfaces to hydrothermal conditions. In ECS Transactions - Interfacial Electrochemistry and Chemistry in High Temperature Media (27 ed., pp. 167-180). (ECS Transactions; Vol. 11, No. 27). https://doi.org/10.1149/1.2939086

@inproceedings{f29ec322b4ce406bae2f9ebf7bfe79e0,

title = "Ion adsorption on metal oxide surfaces to hydrothermal conditions",

abstract = "In this article, we review the sorption of multivalent cations on rutile (α-TiO2) powder surfaces in aqueous 1:1 electrolyte media from room temperature to 250°C. All cations are shown to occupy 'inner sphere' sorption sites in contact with surface oxygens and hydroxyl groups, as well as the diffuse portion of the electrical double layer (EDL). Sorption is shown to increase strongly with increasing temperature, and the sorption affinity is strongly-related to cation radius and charge. Macroscopic powder pH-titration results obtained with ORNL's high temperature hydrogen electrode concentration cells can be rationalized with Gouy-Chapman-Stern models of the EDL, augmented by atomic-scale structural and proton affinity data from synchrotron X-ray studies and computational modeling approaches.",

author = "Wesolowski, {D. J.} and Machesky, {M. L.} and Ridley, {M. K.} and Palmer, {D. A.} and Z. Zhang and P. Fenter and M. P{\v r}edota and Cummings, {P. T.}",

year = "2008",

doi = "10.1149/1.2939086",

language = "English",

isbn = "9781605603124",

series = "ECS Transactions",

number = "27",

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booktitle = "ECS Transactions - Interfacial Electrochemistry and Chemistry in High Temperature Media",

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Wesolowski, DJ, Machesky, ML, Ridley, MK, Palmer, DA, Zhang, Z, Fenter, P, Předota, M & Cummings, PT 2008, Ion adsorption on metal oxide surfaces to hydrothermal conditions. in ECS Transactions - Interfacial Electrochemistry and Chemistry in High Temperature Media. 27 edn, ECS Transactions, no. 27, vol. 11, pp. 167-180, Interfacial Electrochemistry and Chemistry in High Temperature Media - 212th ECS Meeting, Washington, DC, United States, 10/7/07. https://doi.org/10.1149/1.2939086

Ion adsorption on metal oxide surfaces to hydrothermal conditions. / Wesolowski, D. J.; Machesky, M. L.; Ridley, M. K.; Palmer, D. A.; Zhang, Z.; Fenter, P.; Předota, M.; Cummings, P. T.

ECS Transactions - Interfacial Electrochemistry and Chemistry in High Temperature Media. 27. ed. 2008. p. 167-180 (ECS Transactions; Vol. 11, No. 27).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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T1 - Ion adsorption on metal oxide surfaces to hydrothermal conditions

AU - Wesolowski, D. J.

AU - Machesky, M. L.

AU - Ridley, M. K.

AU - Palmer, D. A.

AU - Zhang, Z.

AU - Fenter, P.

AU - Předota, M.

AU - Cummings, P. T.

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N2 - In this article, we review the sorption of multivalent cations on rutile (α-TiO2) powder surfaces in aqueous 1:1 electrolyte media from room temperature to 250°C. All cations are shown to occupy 'inner sphere' sorption sites in contact with surface oxygens and hydroxyl groups, as well as the diffuse portion of the electrical double layer (EDL). Sorption is shown to increase strongly with increasing temperature, and the sorption affinity is strongly-related to cation radius and charge. Macroscopic powder pH-titration results obtained with ORNL's high temperature hydrogen electrode concentration cells can be rationalized with Gouy-Chapman-Stern models of the EDL, augmented by atomic-scale structural and proton affinity data from synchrotron X-ray studies and computational modeling approaches.

AB - In this article, we review the sorption of multivalent cations on rutile (α-TiO2) powder surfaces in aqueous 1:1 electrolyte media from room temperature to 250°C. All cations are shown to occupy 'inner sphere' sorption sites in contact with surface oxygens and hydroxyl groups, as well as the diffuse portion of the electrical double layer (EDL). Sorption is shown to increase strongly with increasing temperature, and the sorption affinity is strongly-related to cation radius and charge. Macroscopic powder pH-titration results obtained with ORNL's high temperature hydrogen electrode concentration cells can be rationalized with Gouy-Chapman-Stern models of the EDL, augmented by atomic-scale structural and proton affinity data from synchrotron X-ray studies and computational modeling approaches.

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