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

被引：48

作者：

Liu, J. -H. ^{[1
]}

Van den Berghe, S. ^{[1
]}

Konstantinovic, M. J. ^{[1
]}

机构：

[1] Studiectr Kernenergie Ctr Etud Energie Nucl SCK C, B-2400 Mol, Belgium

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2009年 / 182卷 / 05期

关键词：

XPS; Valence state of uranium; Ternary uranium oxides; Uranates; RAY PHOTOELECTRON-SPECTROSCOPY; POWDER NEUTRON-DIFFRACTION; CESIUM URANATES; OXIDATION-STATE; URANIUM; OXIDES; RB;

D O I：

10.1016/j.jssc.2009.02.007

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

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+ ion beam so that the surface oxidation does not affect the XPS Studies. (C) 2009 Elsevier Inc. All rights reserved.

引用

页码：1105 / 1108

页数：4

共 14 条

[1] X-RAY PHOTOELECTRON-SPECTROSCOPY OF SOME URANIUM OXIDE PHASES [J].

ALLEN, GC ;

CROFTS, JA ;

CURTIS, MT ;

TUCKER, PM ;

CHADWICK, D ;

HAMPSON, PJ .

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1974, (12) :1296-1301

[2] X-RAY PHOTOELECTRON-SPECTROSCOPY OF ALKALINE-EARTH METAL URANATE COMPLEXES [J].

ALLEN, GC ;

GRIFFITHS, AJ ;

LEE, BJ .

TRANSITION METAL CHEMISTRY, 1978, 3 (04) :229-233

[3] Oxidation state of uranium: an XPS study of alkali and alkaline earth uranates [J].

Bera, S ;

Sali, SK ;

Sampath, S ;

Narasimhan, SV ;

Venugopal, V .

JOURNAL OF NUCLEAR MATERIALS, 1998, 255 (01) :26-33

[4] A STRUCTURAL STUDY OF THE SODIUM(V) URANATE, NAUO3, BY TIME-OF-FLIGHT POWDER NEUTRON-DIFFRACTION [J].

CHIPPINDALE, AM ;

DICKENS, PG ;

HARRISON, WTA .

JOURNAL OF SOLID STATE CHEMISTRY, 1989, 78 (02) :256-261

[5] Actinide speciation using X-ray absorption fine structure spectroscopy [J].

Denecke, Melissa A. .

COORDINATION CHEMISTRY REVIEWS, 2006, 250 (7-8) :730-754

[6] POWDER NEUTRON-DIFFRACTION STUDY OF POTASSIUM URANATE(V), KUO3 [J].

DICKENS, PG ;

POWELL, AV .

JOURNAL OF MATERIALS CHEMISTRY, 1991, 1 (01) :137-138

[7] PHOTOELECTRON-SPECTRA OF URANIUM(V) IN MIXED OXIDES SHOWING CHARACTERISTIC SATELLITE SIGNALS [J].

KELLER, C ;

JORGENSEN, CK .

CHEMICAL PHYSICS LETTERS, 1975, 32 (03) :397-400

[8] XANES study on novel mixed-valent A2U4O12(A = K, Rb or Tl) uranates [J].

Misra, Nand Lal ;

Lahiri, Debdutta ;

Mudher, Khush Dev Singh ;

Olivi, Luca ;

Sharma, Surinder M. .

X-RAY SPECTROMETRY, 2008, 37 (03) :215-218

[9]

RUEDORFF W, 1962, ANGEW CHEM, V74, P429

[10] Local structure and oxidation state of uranium in some ternary oxides: X-ray absorption analysis [J].

Soldatov, A. V. ;

Lamoen, D. ;

Konstantinovic, M. J. ;

Van den Berghe, S. ;

Scheinost, A. C. ;

Verwerft, M. .

JOURNAL OF SOLID STATE CHEMISTRY, 2007, 180 (01) :54-61

← 1 2 →