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Solvothermal synthesis of ZnO with various aspect ratios using organic solvents

机译：使用有机溶剂溶剂热合成各种纵横比的ZnO

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摘要

Nanocrystalline ZnO powders were synthesized by a solvothermal method using various organic solvents as the reaction medium. Products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and selected area electron diffraction (SAED). The aspect ratio of ZnO primary particles depended upon the solvent employed, such that the aspect ratio increased when the solvent with a low dielectric constant was employed. For the use of n-alkanes and aromatic compounds as solvent, ZnO nanorods were obtained. The polar characteristic of the solvent was proposed to be the main factor that affects both nucleation and growth of ZnO nanoparticles and, consequently, determines the aspect ratio of the products.
机译：使用多种有机溶剂作为反应介质，通过溶剂热法合成了纳米ZnO粉体。产品通过X射线衍射（XRD），扫描电子显微镜（SEM），透射电子显微镜（TEM）和选定区域电子衍射（SAED）进行表征。 ZnO一次粒子的长径比取决于所使用的溶剂，使得当使用具有低介电常数的溶剂时，长径比增加。为了使用正构烷烃和芳族化合物作为溶剂，获得了ZnO纳米棒。溶剂的极性特性被认为是影响ZnO纳米颗粒成核和生长的主要因素，因此决定了产品的长径比。

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