Photoreduction of Pu(V,VI) by TiO2

被引：5

作者：

Romanchuk, Anna Yu. ^{[1
]}

Kalmykov, Stepan N. ^{[1
,2
,3
]}

Egorov, Alexander V. ^{[1
]}

Zubavichus, Yan V. ^{[3
]}

Shiryaev, Andrei A. ^{[1
,4
]}

Smirnov, Eugene A. ^{[1
]}

Garshev, Alexey V. ^{[1
]}

机构：

[1] Lomonosov Moscow State Univ, Dept Chem, Moscow 119991, Russia

[2] RAS, Vernadsky Inst Geochem & Analyt Chem, Moscow 119991, Russia

[3] Kurchatov Inst, Natl Res Ctr, Moscow 123182, Russia

[4] RAS, Frumkin Inst Phys Chem & Electrochem, Moscow 119071, Russia

来源：

RADIOCHIMICA ACTA | 2016年 / 104卷 / 12期

基金：

俄罗斯科学基金会;

关键词：

Plutonium; sorption; redox reactions; photocatalysis; titania; PLUTONIUM; SORPTION; REDUCTION; HEMATITE;

D O I：

10.1515/ract-2015-2494

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

In this study, the effect of light on the kinetics and speciation of plutonium at its interaction with particles of TiO2 under different light conditions is shown for the first time. It was found that sorption was followed by reduction of the plutonium to Pu(IV). In this, the reduction reaction and sorption in conditions of the presence of light proceed significantly more rapidly due to the photocatalytic activity of titanium dioxide, providing a source of electrons for the reaction. Spectral methods (XAFS and TEM) showed that plutonium forms nanoclusters with the structure of PuO2, which decorate the surface of the solid phase.

引用

页码：843 / 851

页数：9

共 15 条

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