U environment in leached SON68 type glass: A coupled XPS and time-resolved photoluminescence spectroscopy study

Nadège Ollier; Marie Jo Guittet; Martine Gautier-Soyer; Gérard Panczer; Bernard Champagnon; Patrick Jollivet

doi:10.1016/S0925-3467(03)00106-X

U environment in leached SON68 type glass: A coupled XPS and time-resolved photoluminescence spectroscopy study

Nadège Ollier, Marie Jo Guittet, Martine Gautier-Soyer, Gérard Panczer, Bernard Champagnon, Patrick Jollivet

Research output: Contribution to journal › Article › peer-review

Abstract

X-ray photoelectron spectroscopy (XPS) and time-resolved photoluminescence measurements have been performed on SON68 type nuclear glass and its leached product (gel) in order to characterize uranium environment in both materials. XPS measurements allow to detect two oxidation states in glass: about 20% of tetravalent uranium and 80% of hexavalent uranium, present under two types of environment. Comparison of XPS and time-resolved photoluminescence data allow to identify these U(VI) environments. In glass, they are respectively attributed to an uranate and an uranyl-type environment. In gels, U(IV) is oxidized in U(VI), the uranyl type environment is conserved whereas some amorphous uranyl hydroxides are formed. The U environment depends strongly on the leaching mode, in particular the leaching duration and water renewal rate.

Original language	English
Pages (from-to)	63-68
Number of pages	6
Journal	Optical Materials
Volume	24
Issue number	1-2
DOIs	https://doi.org/10.1016/S0925-3467(03)00106-X
Publication status	Published - 1 Jan 2003
Externally published	Yes

Keywords

Gel
Glass
Photoluminescence
Uranium
XPS

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10.1016/S0925-3467(03)00106-X

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title = "U environment in leached SON68 type glass: A coupled XPS and time-resolved photoluminescence spectroscopy study",

abstract = "X-ray photoelectron spectroscopy (XPS) and time-resolved photoluminescence measurements have been performed on SON68 type nuclear glass and its leached product (gel) in order to characterize uranium environment in both materials. XPS measurements allow to detect two oxidation states in glass: about 20\% of tetravalent uranium and 80\% of hexavalent uranium, present under two types of environment. Comparison of XPS and time-resolved photoluminescence data allow to identify these U(VI) environments. In glass, they are respectively attributed to an uranate and an uranyl-type environment. In gels, U(IV) is oxidized in U(VI), the uranyl type environment is conserved whereas some amorphous uranyl hydroxides are formed. The U environment depends strongly on the leaching mode, in particular the leaching duration and water renewal rate.",

keywords = "Gel, Glass, Photoluminescence, Uranium, XPS",

author = "Nad{\`e}ge Ollier and Guittet, \{Marie Jo\} and Martine Gautier-Soyer and G{\'e}rard Panczer and Bernard Champagnon and Patrick Jollivet",

year = "2003",

month = jan,

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doi = "10.1016/S0925-3467(03)00106-X",

language = "English",

volume = "24",

pages = "63--68",

journal = "Optical Materials",

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TY - JOUR

T1 - U environment in leached SON68 type glass

T2 - A coupled XPS and time-resolved photoluminescence spectroscopy study

AU - Ollier, Nadège

AU - Guittet, Marie Jo

AU - Gautier-Soyer, Martine

AU - Panczer, Gérard

AU - Champagnon, Bernard

AU - Jollivet, Patrick

PY - 2003/1/1

Y1 - 2003/1/1

N2 - X-ray photoelectron spectroscopy (XPS) and time-resolved photoluminescence measurements have been performed on SON68 type nuclear glass and its leached product (gel) in order to characterize uranium environment in both materials. XPS measurements allow to detect two oxidation states in glass: about 20% of tetravalent uranium and 80% of hexavalent uranium, present under two types of environment. Comparison of XPS and time-resolved photoluminescence data allow to identify these U(VI) environments. In glass, they are respectively attributed to an uranate and an uranyl-type environment. In gels, U(IV) is oxidized in U(VI), the uranyl type environment is conserved whereas some amorphous uranyl hydroxides are formed. The U environment depends strongly on the leaching mode, in particular the leaching duration and water renewal rate.

AB - X-ray photoelectron spectroscopy (XPS) and time-resolved photoluminescence measurements have been performed on SON68 type nuclear glass and its leached product (gel) in order to characterize uranium environment in both materials. XPS measurements allow to detect two oxidation states in glass: about 20% of tetravalent uranium and 80% of hexavalent uranium, present under two types of environment. Comparison of XPS and time-resolved photoluminescence data allow to identify these U(VI) environments. In glass, they are respectively attributed to an uranate and an uranyl-type environment. In gels, U(IV) is oxidized in U(VI), the uranyl type environment is conserved whereas some amorphous uranyl hydroxides are formed. The U environment depends strongly on the leaching mode, in particular the leaching duration and water renewal rate.

KW - Gel

KW - Glass

KW - Photoluminescence

KW - Uranium

KW - XPS

U2 - 10.1016/S0925-3467(03)00106-X

DO - 10.1016/S0925-3467(03)00106-X

M3 - Article

AN - SCOPUS:0141974326

SN - 0925-3467

VL - 24

SP - 63

EP - 68

JO - Optical Materials

JF - Optical Materials

IS - 1-2

ER -

U environment in leached SON68 type glass: A coupled XPS and time-resolved photoluminescence spectroscopy study

Abstract

Keywords

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