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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >One-dimensional growth of zinc oxide nanostructures from large micro-particles in a highly rapid synthesis
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One-dimensional growth of zinc oxide nanostructures from large micro-particles in a highly rapid synthesis

机译：在一氧化碳纳米结构中一维生长大颗粒的快速合成

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摘要

Large and irregularly-shaped zinc oxide (ZnO) micro-particles commonly found in a high-temperature vapor-phase process known as the catalyst-free combust-oxidized mesh (CFCOM) process, play a crucial role as nucleation hosts for ZnO one-dimensional (1D) nanostructures, especially nanometric wires and rods. Nanowires and nanorods tend to grow from the hillocks of the large micro-particles whereby these hillocks serve as nucleation sites for the acicular structures. Nanowires with aspect ratios exceeding 5 are the most common 1D structures that grow from pillar-like hillocks, while triangular hillocks are probable nucleation hosts for nanorods. The ZnO nanostructures possess a polycrystalline nature with photolu-minescent emission in the UV band-edge and visible regimes. A novel and non-destructive electrical resistance measurement method is introduced in that the 1D ZnO nanostructures exhibited very high GΩ resistance that is over five times higher than that of commercial ZnO. A growth model is proposed to offer a probable explanation for the fascinating rapid growth of 1D nanostructures originating from large ZnO micro-particles. The ZnO particles in this work were synthesized using 5-ton industrial furnaces via a university-industry joint effort.
机译：大型且不规则形状的氧化锌（ZnO）微粒通常在高温气相法（称为无催化剂的燃烧氧化网（CFCOM）工艺）中发现，作为ZnO的成核主体，起着至关重要的作用。 （1D）纳米结构，尤其是纳米线和棒。纳米线和纳米棒倾向于从大微粒的小丘中生长，由此这些小丘充当针状结构的成核位点。长径比超过5的纳米线是最常见的一维结构，从柱状小丘生长而来，而三角形小丘是纳米棒的可能成核主体。 ZnO纳米结构具有多晶性质，在UV带边缘和可见光区具有光致发光发射。引入了一种新颖的无损电阻测量方法，其中一维ZnO纳米结构表现出非常高的GΩ电阻，是商用ZnO的五倍以上。提出了一种生长模型，为源自大型ZnO微粒的一维纳米结构的引人入胜的快速生长提供了可能的解释。这项工作中的ZnO颗粒是通过5吨工业炉通过大学与工业界的共同努力而合成的。

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