Effects of Surfactants on the CoSb3 Nanopodwers and Amorphization of the Synthesized Nanopodwers
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摘要: 分别选用不同的表面活性剂(SDBS、CTAB、EDTA、PVP),采用水热法成功制备CoSb3纳米粉体.对制备的纳米粉体分别进行XRD和SEM表征,研究了不同表面活性剂对制备的CoSb3纳米粉体的影响.结果表明不同表面活性剂对制备的CoSb3纳米粉体形貌有显著的影响.并将水热法制备的CoSb3纳米粉体,采用脉冲激光非晶化技术进行处理,结果表明纳米粉体实现了部分非晶化.通过样品的XRD分析研究了影响CoSb3纳米粉体部分非晶化的条件,结果表明扫描重复次数的增加可以提高CoSb3基方钴矿热电材料的非晶化能力,适当提高扫描速度有利于CoSb3基方钴矿热电材料的非晶化.Abstract: The CoSb3 nanopodwers were synthesized by the hydrothermal method using different surfactants which were Cetyltrimethyl Ammonium Bromide (CTAB), Ethylene Diamine Tetraacetic Acid (EDTA), sodium dodecyl benzene sulfonate (SDBS) and Polyvinyl Pyrrolidone (PVP). The phase structure and micro-topography of the nanopowders were investigated by X-ray diffractometer (XRD) and a fileld-emission scanning electron microscopy (FESEM). The result showed that different surfactants had significant influence on the morphologies of CoSb3 nanopodwers. Laser rapid quenching method was used to deal with CoSb3 nanopowders that synthesized by the hydrothermal method in order to achieve partial amorphization of the CoSb3.The amorphous conditions of CoSb3 were investigated by the XRD. The results showed that (1) with the increase of the scanning number, the amorphous level of CoSb3 raised; (2) Increasing the scanning speed properly could be helpful to increase the amorphous level of CoSb3.
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Keywords:
- CoSb3 /
- nanopodwers /
- reaction time /
- surfactant /
- laser rapid quenching method
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