Changes in chemical state and local structure of green rust by addition of copper sulphate ions
Changes in chemical state and local structure of green rust by addition of copper sulphate ions
复制标题
DOI：
10.1016/j.corsci.2008.02.022
复制
发表时间：
2008-06
影响因子：
8.3
通讯作者：
Shigeru Suzuki;K. Shinoda;Masugu Sato;S. Fujimoto;M. Yamashita;H. Konishi;T. Doi;T. Kamimura;K. Inoue;Y. Waseda
中科院分区：
文献类型：
--
作者：
Shigeru Suzuki;K. Shinoda;Masugu Sato;S. Fujimoto;M. Yamashita;H. Konishi;T. Doi;T. Kamimura;K. Inoue;Y. Waseda
采用X射线吸收近边结构（XANES）、扩展X射线吸收精细结构（EXAFS）和X射线衍射（XRD）研究了硫酸铜离子对硫酸氢盐绿色锈（GR）化学状态和局部结构的影响。铁K边XANES光谱表明，铁（II）在GR部分氧化通过添加硫酸铜溶液。Cu K边XANES谱表明，GR悬浮液中的硫酸铜离子被还原为零电荷铜。径向结构函数表明，GR的结构由FeO 6八面体单元的边缘共享组成，Fe（II）的氧化改变了GR的结构.此外，还发现通过加入铜离子，GR被部分氧化为α-FeOOH。
The X-ray absorption near edge structure (XANES), the extended X-ray absorption fine structure (EXAFS) and X-ray diffraction (XRD) measurements were used for characterising the effect of the addition of copper sulphate ions on the chemical state and local structure of hydrosulphate green rust (GR). Fe K edge XANES spectra showed that Fe(II) in GR was partially oxidised by the addition of the copper sulphate solution. Cu K edge XANES spectra showed that the copper sulphate ions in the GR suspension were reduced to zero charge copper. Radial structural functions indicated that the structure of GR comprised edge sharing of FeO6octahedral units, which was changed by the oxidation of Fe(II). In addition, it was found that the GR was partially oxidised to α-FeOOH by the addition of copper ions.