Nanostructural evolution from nanosheets to one-dimensional nanoparticles for manganese oxide
Nanostructural evolution from nanosheets to one-dimensional nanoparticles for manganese oxide
复制标题
氧化锰从纳米片到一维纳米颗粒的纳米结构演变
DOI：
10.1016/j.materresbull.2012.05.035
复制
发表时间：
2012-09
影响因子：
5.4
通讯作者：
温普红
中科院分区：
文献类型：
--
作者：
温普红
本文介绍了一种以二维氧化锰纳米片为前驱体的水热软化学合成氧化锰纳米颗粒的新工艺。在该过程中，具有层状结构的水钠锰矿型锰氧化物被剥离成其基本层纳米片，然后对纳米片进行水热处理以将纳米片的二维形态转化为一维纳米颗粒。利用这种水热软化学方法获得了由纳米纤维或纳米带构造的氧化锰纳米纤维、纳米管、纳米带、纳米带和织物带状颗粒。通过XRD、SEM、TEM和TG-DTA分析表征了从二维纳米片到一维纳米颗粒的纳米结构演变。产物的形貌和纳米结构强烈依赖于反应体系中加入的有机胺阳离子的分子尺寸。有机胺阳离子在纳米结构演化过程中充当形态导向剂。
This paper introduces a novel hydrothermal soft chemical synthesis process for manganese oxide nanostructured particles using two-dimensional manganese oxide nanosheets as precursor. In this process, a birnessite-type manganese oxide with a layered structure was exfoliated into its elementary layer nanosheets, and then the nanosheets were hydrothermally treated to transform the two-dimensional morphology of the nanosheets to one-dimensional nanoparticles. The manganese oxide nanofibers, nanotubes, nanobelts, nanoribbons, and fabric-ribbon-like particles constructed from nanofibers or nanobelts were obtained using this hydrothermal soft chemical process. The nanostructural evolution from the two-dimensional nanosheets to the one-dimensional nanoparticles was characterized by XRD, SEM, TEM, and TG-DTA analysis. The morphology and nanostructure of the products are strongly dependent on the molecular dimension of organic amine cations added in the reaction system. The organic amine cations act as a morphology directing agent in the nanostructural evolution process.
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