Synthesis of ZnO2 nanoparticles by laser ablation in liquid and their annealing transformation into ZnO nanoparticles
Synthesis of ZnO2 nanoparticles by laser ablation in liquid and their annealing transformation into ZnO nanoparticles
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DOI：
10.1016/j.apsusc.2009.08.019
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发表时间：
2009-10-15
影响因子：
6.7
通讯作者：
Saleh, T. A.
中科院分区：
文献类型：
--
作者：
Gondal, M. A.;Drmosh, Q. A.;Saleh, T. A.
利用Nd：YAG的三次谐波产生的紫外脉冲激光，合成了纳米ZnO和ZnO。为了合成ZnO 2纳米颗粒，在与氧化剂H2 O2混合的去离子水的存在下，在重复的激光照射下，将Zn靶的高纯度金属板固定在玻璃池的底部。通过激光烧蚀合成的ZnO 2和ZnO的光学性质、尺寸和形貌强烈地受先前未报道的后退火条件的影响。通过在200 ℃下将ZnO 2退火8 h，初步合成的产物（ZnO 2）完全转化为ZnO。通过在200~600 ℃范围内改变退火温度，ZnO的晶粒尺寸从5 nm变化到19 nm，晶格参数、带隙和纳米ZnO的一些其他光学性质发生变化。(C)2009 Elsevier B.V.保留所有权利。
A pulsed laser emitting UV radiations generated by the third harmonic of Nd:YAG was applied for the synthesis of nano-structured ZnO2 and ZnO. For the synthesis of nanoparticles of ZnO2, a high-purity metallic plate of Zn target was fixed at the bottom of a glass cell, in the presence of deionized water mixed with oxidizing agent H2O2, under repeated laser irradiation. The optical properties, size and the morphology of the synthesized ZnO2 and ZnO by laser ablation was influenced strongly by post-annealing conditions which is not previously reported. By annealing ZnO2 at 200 degrees C for 8 h, the product (ZnO2) synthesized primarily was converted completely to ZnO. By variation of the annealing temperatures from 200 to 600 degrees C, the grain size of ZnO changes from 5 to 19 nm with a change in lattice parameters, the band gap and some other optical properties of nano-ZnO. (C) 2009 Elsevier B.V. All rights reserved.