The microwave-assisted synthesis and characterization of Zn1 - xCoxO nanopowders
The microwave-assisted synthesis and characterization of Zn1 - xCoxO nanopowders
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DOI：
10.1016/j.matlet.2010.01.074
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发表时间：
2010-04
影响因子：
3
通讯作者：
L. H. Hoàng;Pham V. Hai;N. H. Hai;P. V. Vinh;Xiang-Bai Chen;I. Yang
中科院分区：
文献类型：
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作者：
L. H. Hoàng;Pham V. Hai;N. H. Hai;P. V. Vinh;Xiang-Bai Chen;I. Yang
在本文中，我们提出了一种简单的微波辅助合成Zn1 - xCoxO纳米粉末。利用微波辅助法的优点，我们成功地合成了晶体质量和表面形貌良好的Zn1−xCoxO纳米粉体。采用x射线衍射（XRD）、扫描电子显微镜（SEM）、紫外可见吸收和微拉曼光谱对纳米粉体进行了表征。我们发现，在合成过程中，表面活性剂三乙醇胺（TEA）对Zn1−xCoxO纳米颗粒的形貌起着重要的作用。XRD研究表明，当Co掺杂量达到5%时，Co2+离子成功融入ZnO基质中。Zn1−xCoxO （x= 1-5%）纳米粉体的吸收光谱在660、611和565nm处出现多个峰，表明Co2+离子存在于四面体中。Raman研究表明，随着Co浓度的增加，e2low模式的线宽增加，这进一步表明Co +离子进入ZnO基质中。
In this paper, we present a simple microwave-assisted synthesis of Zn1−xCoxO nanopowders. With the advantages of the microwave-assisted method, we have successfully synthesized good crystalline quality and good surface morphology Zn1−xCoxO nanopowders. The nanopowders are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), UV–VIS absorption, and micro-Raman spectroscopy. We found, in the synthesis process, the surfactant Triethanolamine (TEA) plays an important role on the morphology of Zn1−xCoxO nanoparticles. The XRD study shows that for Co doping up to 5%, Co2+ions are successfully incorporated into the ZnO host matrix. The absorption spectra of Zn1−xCoxO (x=1–5%) nanopowders show several peaks at 660, 611 and 565nm, indicating the presence of Co2+ions in the tetrahedral sites. The Raman study shows that the linewidth of E2lowmode increases with Co concentration, which further indicates the incorporation of Co2+ions into the ZnO host matrix.