Interaction of neptunyl with goethite (α-FeOOH), maghemite (γ-Fe2O3), and hematite (α-Fe2O3) in water as probed by X-ray photoelectron spectroscopy

被引：17

作者：

Teterin, A. Yu.

Maslakov, K. I.

Teterin, Yu. A.

Kalmykov, S. N.

Ivanov, K. E.

Vukcevic, L.

Khasanova, A. B.

Shcherbina, N. S.

机构：

[1] Russian Acad Sci, NS Kurnakov Gen & Inorgan Chem Inst, Moscow 119991, Russia

[2] IV Kurchatov Atom Energy Inst, Russian Res Ctr, Moscow 123182, Russia

[3] Moscow MV Lomonosov State Univ, Moscow 119992, Russia

[4] Univ Montenegro, Podgorica, Serbia

来源：

RUSSIAN JOURNAL OF INORGANIC CHEMISTRY | 2006年 / 51卷 / 12期

基金：

俄罗斯基础研究基金会; 美国国家科学基金会;

关键词：

D O I：

10.1134/S0036023606120151

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The sorption behavior is studied and the physicochemical neptunium species existing on the surface of goethite (alpha-FeOOH), maghemite (gamma-Fe2O3), and hematite (alpha-Fe2O3) are determined. Solvent extraction and X-ray photoelectron spectroscopy (XPS) are used to determine the neptunium surface species. The ion and elemental composition of the surface of the minerals and surface neptunyl NpO2+ complexes is determined using these data. Compounds containing neptunium(IV) or neptunium(VI) ions do not appear; rather, neptunyl (Np(V)O-2(+)) group is complexed with surface hydroxide groups of alpha-FeOOH, gamma-Fe2O3, and alpha-Fe2O3. Presumably, the oxygen atoms of iron oxides and water and/ or carbonate (CO32-) or nitrate (NO3-) group lie in the equatorial plane of the neptunyl (NpO2+) group.

引用

页码：1937 / 1944

页数：8

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