Influence of silicon on local structure and morphology of γ-FeOOH and α-FeOOH particles
Influence of silicon on local structure and morphology of γ-FeOOH and α-FeOOH particles
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DOI：
10.1016/j.corsci.2006.07.004
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发表时间：
2007-03-01
影响因子：
8.3
通讯作者：
Waseda, Yoshio
中科院分区：
文献类型：
--
作者：
Kwon, Sang-Koo;Shinoda, Kozo;Waseda, Yoshio
采用扩展x射线吸收精细结构（EXAFS）方法研究了含硅和不含硅的蛭石和针铁矿的局部结构。分别用x射线衍射和透射电镜研究了这些颗粒的结构和形貌。用傅里叶变换红外光谱（FT-IR）对键合结构进行了表征。当添加硅种时，结构和形态发生改变，八面体FeO6单元的连接发生扭曲。FT-IR光谱揭示了含硅酸盐离子颗粒中FeO-Si键的形成，该特征键影响了颗粒的局部结构和形貌。(c) 2006 Elsevier Ltd.版权所有。
The extended X-ray absorption fine structure (EXAFS) method was used for investigating the local structures of lepidocrocite and goethite with and without silicon. The structure and morphology of these particles were investigated using X-ray diffraction and transmission electron microscopy, respectively. The bonding structure was examined by Fourier transform infrared spectroscopy (FT-IR). When silicon species was added, the structure and morphology changed while the linkage of FeO6 octahedral units was distorted. The FT-IR spectra revealed the formation of the FeO-Si bond in particles containing silicate ions, and the characteristic bond affects the local structure and morphology of the particles. (c) 2006 Elsevier Ltd. All rights reserved.