Photo-induced low temperature synthesis of nanocrystalline UO2, ThO2 and mixed UO2-ThO2 oxides

被引：19

作者：

Pavelkova, Tereza ^{[1
]}

Cuba, Vaclay ^{[1
]}

Sebesta, Ferdinand ^{[1
]}

机构：

[1] Czech Tech Univ, Fac Nucl Sci & Phys Engn, CR-11519 Prague 1, Czech Republic

来源：

JOURNAL OF NUCLEAR MATERIALS | 2013年 / 442卷 / 1-3期

基金：

欧盟第七框架计划;

关键词：

URANYL OXALATE SYSTEM; PHOTOCHEMICAL BEHAVIOR; PHOTOLYSIS; SEPARATION; MECHANISM; KINETICS; THORIUM; URANIUM;

D O I：

10.1016/j.jnucmat.2013.08.016

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Photochemically induced preparation of nanocrystalline uranium and/or thorium oxides is based on UV radiation induced formation of amorphous solid precursor in aqueous solutions containing uranium and/or thorium nitrate and ammonium formate. Subsequent heat treatment under various atmospheres leads to formation of nanocrystalline UO2, ThO2 or UO2-ThO2 solid solution at minimum temperatures in the interval 300-550 degrees C. The materials consist of nanoparticles from 3 to 15 nm in diameter and with narrow size distribution. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：29 / 32

页数：4

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