光学学报, 2016, 36 (8): 0816001, 网络出版: 2016-08-18   

六方相纤锌矿硫化锌微球的制备及性能研究

Synthesis and Characterization of Hexagonal Phase Wurtzite-Type ZnS Microspheres
作者单位
山东大学晶体材料国家重点实验室, 山东 济南 250000
摘要
以谷胱甘肽(GSH)为硫源,氯化锌(ZnCl2)为锌源,溴化十六烷基三甲铵(CTAB)为表面活性剂,乙二胺为反应媒介,采用水热法在较低温度(160 ℃)下成功地合成六方相纤锌矿硫化锌(ZnS)纳米微球。采用扫描电子显微镜观察纳米微球的形貌,利用X射线衍射仪分析其物相,借助荧光光谱仪和紫外分光光度计分析不同条件下合成的硫化锌纳米微球的光学性能。实验结果表明,CTAB能够促进空心微球的形成,以CTAB为致孔剂能够在相对较低的温度条件下得到由纳米粒子组成的微米量级的单分散六方相纤锌矿结构的硫化锌微球。通过改变其他反应参数可以得到不同壳厚的硫化锌微球,测试其发光性能发现空心球的荧光效果明显好于实心球。
Abstract
The hexagonal phase wurtzite-type ZnS microspheres are synthesized by the hydrothermal method at relatively low reaction temperature (160 ℃), with glutathione (GSH) as the sulfur source, ZnCl2 as the zinc source, hexadecyl trimethylammonium bromide (CTAB) as the surfactant, and ethylenediamine as the reaction medium. The morphologies of microspheres are observed by scanning electron microscope, and their phase structures are analyzed by X-ray diffraction. In addition, the optical properties of samples synthesized under different conditions are characterized by fluorescence spectrometer and ultraviolet spectrophotometer. The experimental results show that CTAB can promote the formation of hollow spheres. The monodispersed hexagonal phase wurtzite-type ZnS microspheres at micrometer scale, which are composed of nanoparticles, can be obtained at relatively low reaction temperature when CTAB is used as the porogens. The ZnS hollow microspheres with different shell thicknesses can be synthesized by changing the reaction parameters. The test results show that the fluorescence intensity of hollow microspheres is higher than that of solid microspheres.
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刘鑫彤, 胡小波, 徐现刚. 六方相纤锌矿硫化锌微球的制备及性能研究[J]. 光学学报, 2016, 36(8): 0816001. Liu Xintong, Hu Xiaobo, Xu Xiangang. Synthesis and Characterization of Hexagonal Phase Wurtzite-Type ZnS Microspheres[J]. Acta Optica Sinica, 2016, 36(8): 0816001.

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