Fractal growth of single-crystal α-Fe2O3:: From dendritic micro-pines to hexagonal micro-snowflakes
Fractal growth of single-crystal α-Fe2O3:: From dendritic micro-pines to hexagonal micro-snowflakes
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DOI：
10.1016/j.matlet.2007.06.082
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发表时间：
2008-02-29
影响因子：
3
通讯作者：
Shao, Wen-Zhu
中科院分区：
文献类型：
--
作者：
He, Kai;Xu, Cheng-Yan;Shao, Wen-Zhu
采用水热法合成了具有微松状和微雪花状形貌的α - fe2o3单晶分形纳米结构。采用x射线衍射、穆斯堡尔光谱、扫描电镜（SEM）、透射电镜（TEM）和高分辨率透射电镜（HRTEM）对合成赤铁矿的结晶度、组成、纯度、形貌和微观结构进行了表征。通过仔细的扫描电镜和透射电镜观察，提出了这两种分形结构可能的生长机制。讨论了表面活性剂NP-9在两种分形结构转化中的作用。(C) 2007 Elsevier B.V.版权所有
The fractal nanostructures of single-crystal alpha-Fe2O3 with micro-pine and micro-snowflake like morphologies have been synthesized via a hydrothermal route. The crystallinity, composition, purity, morphology and microstructure of the synthesized hematite were characterized by Xray diffraction, Mossbauer spectrometry, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM). A possible growth mechanism for these two kinds of fractal structures was proposed based on careful SEM and TEM observations. The role of the surfactant NP-9 in the conversion of the two kinds of fractal structures was discussed. (C) 2007 Elsevier B.V. All rights reserved.