Sol–gel synthesis of forsterite nanopowders with narrow particle size distribution
Sol–gel synthesis of forsterite nanopowders with narrow particle size distribution
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DOI：
10.1016/j.jallcom.2010.01.097
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发表时间：
2010-04
影响因子：
6.2
通讯作者：
K. Sanosh;A. Balakrishnan;Lijo Francis;T. Kim
中科院分区：
文献类型：
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作者：
K. Sanosh;A. Balakrishnan;Lijo Francis;T. Kim
以六水硝酸镁和正硅酸四乙酯分别为镁和硅前驱体，采用溶胶-凝胶法制备了FS纳米粉体（~ 27nm）。硝酸被用作催化剂。老化后，FS凝胶在800℃下煅烧30min。利用x射线衍射和傅里叶变换红外光谱对煅烧粉末的相组成进行了表征。采用透射电镜对其粒度和形貌进行了研究。FS粉体粒度分布分析显示，粒径范围为5 ~ 90nm，呈偏态分布。研究表明，采用这种简单的溶胶-凝胶技术可以获得高相纯度和窄分布的FS纳米颗粒。
Forsterite (FS) nanopowders (∼27nm) were synthesized using a sol–gel route with magnesium nitrate hexahydrate and tetra ethyl ortho-silicate as magnesium and silicon precursors, respectively. Nitric acid was used as a catalyst. After aging, the FS gel was calcined at 800°C for 30min. The calcined powders were characterized for phase composition using X-ray diffractrometry and fourier transform-infrared spectroscopy. The particle size and morphology was studied using transmission electron microscopy. The particle size distribution analysis of FS powders showed skewed distribution plot with particle size ranging from 5–90nm. This study showed that high phase purity and narrowly distributed FS nanoparticles could be obtained using this simple sol–gel technique.