XPS spectra of the U5+ compounds KUO3, NaUO3 and Ba2U2O7

Junhu Liu; Sven Van den Berghe; Milan Konstantinovic; Rik-Wouter Bosch; Rachid Chaouadi

doi:10.1016/j.jssc.2009.02.007

XPS spectra of the U5+ compounds KUO3, NaUO3 and Ba2U2O7

Junhu Liu, Sven Van den Berghe, Milan Konstantinovic, Rik-Wouter Bosch, Rachid Chaouadi

Research output › peer-review

Abstract

Valence states of uranium in three ternary uranates KUO3, NaUO3 and Ba2U2O7 were studied using X-ray photoelectron spectroscopy (XPS). The analysis of the U4f photoelectron peak positions, peak widths at half maximum and satellite positions of U4f peaks, shows that the uranium in these compounds is present in a single valence state, namely U5+. Since the surface of these compounds is extremely susceptible to oxidation, the XPS spectra were measured after a carefully controlled etching of the surface using an Arþ ion beam so that the surface oxidation does not affect the XPS studies.

Original language	English
Pages (from-to)	1105-1108
Journal	Journal of Solid State Chemistry
Volume	182
Issue number	5
DOIs	https://doi.org/10.1016/j.jssc.2009.02.007
State	Published - Apr 2009

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Cite this

@article{a3360e391a65476da42cfaa24c90bca0,

title = "XPS spectra of the U5+ compounds KUO3, NaUO3 and Ba2U2O7",

abstract = "Valence states of uranium in three ternary uranates KUO3, NaUO3 and Ba2U2O7 were studied using X-ray photoelectron spectroscopy (XPS). The analysis of the U4f photoelectron peak positions, peak widths at half maximum and satellite positions of U4f peaks, shows that the uranium in these compounds is present in a single valence state, namely U5+. Since the surface of these compounds is extremely susceptible to oxidation, the XPS spectra were measured after a carefully controlled etching of the surface using an Ar{\th} ion beam so that the surface oxidation does not affect the XPS studies.",

keywords = "XPS, Valence state of uranium, ternary uranium oxides, uranates",

author = "Junhu Liu and {Van den Berghe}, Sven and Milan Konstantinovic and Rik-Wouter Bosch and Rachid Chaouadi",

note = "Score = 10",

year = "2009",

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doi = "10.1016/j.jssc.2009.02.007",

language = "English",

volume = "182",

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journal = "Journal of Solid State Chemistry",

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T1 - XPS spectra of the U5+ compounds KUO3, NaUO3 and Ba2U2O7

AU - Liu, Junhu

AU - Van den Berghe, Sven

AU - Konstantinovic, Milan

A2 - Bosch, Rik-Wouter

A2 - Chaouadi, Rachid

N1 - Score = 10

PY - 2009/4

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N2 - Valence states of uranium in three ternary uranates KUO3, NaUO3 and Ba2U2O7 were studied using X-ray photoelectron spectroscopy (XPS). The analysis of the U4f photoelectron peak positions, peak widths at half maximum and satellite positions of U4f peaks, shows that the uranium in these compounds is present in a single valence state, namely U5+. Since the surface of these compounds is extremely susceptible to oxidation, the XPS spectra were measured after a carefully controlled etching of the surface using an Arþ ion beam so that the surface oxidation does not affect the XPS studies.

AB - Valence states of uranium in three ternary uranates KUO3, NaUO3 and Ba2U2O7 were studied using X-ray photoelectron spectroscopy (XPS). The analysis of the U4f photoelectron peak positions, peak widths at half maximum and satellite positions of U4f peaks, shows that the uranium in these compounds is present in a single valence state, namely U5+. Since the surface of these compounds is extremely susceptible to oxidation, the XPS spectra were measured after a carefully controlled etching of the surface using an Arþ ion beam so that the surface oxidation does not affect the XPS studies.

KW - XPS

KW - Valence state of uranium

KW - ternary uranium oxides

KW - uranates

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_96714

UR - http://knowledgecentre.sckcen.be/so2/bibref/5734

U2 - 10.1016/j.jssc.2009.02.007

DO - 10.1016/j.jssc.2009.02.007

M3 - Article

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JO - Journal of Solid State Chemistry

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