The Effect of High Gravity Field on the Hydrothermal Preparation of the Nanostructured Materials

摘要：

　　The nanostructured ZnS,CdS/CdCO3 and MnCO3 were prepared by the hydrothermal method with gravity field of 1000 /g in the oil/water system at 100-150℃ for 0.5h.The products were characterized by field-emission scanning electron microscopy (FE-SEM),transmission electron microscopy (TEM),powder X-ray diffraction (XRD) and BET method.The results showed that the ZnS samples obtained using ZnCl2 and Na2S2O3 as precursors at 100-120℃ for 0.5h were the polycrystalline microspheres self-assembled by the crystallites with the size of 3-25nm.The pore volume of polycrystalline microspheres decreased with the increase of the size of the applied gravity forces.The morphology of CdS/CdCO3 samples obtained at 100℃ for 0.5h was the flower-like structure,while the as-prepared samples at 120℃ for 0.5h were the nano-ceramic microspheres in shape.The gravity force favors the formation of CdS/CdCO3 samples.Moreover,the MnCO3 polycrystalline flake can be obtained at 100-120℃ for 0.5h under gravity field of 1000 /g.

关键词： Hydrothermal Gravity field ZnS CdS/CdCO3 MnCO3

作者: Wenjun Li Tang Zhou Liuliu Ding Lu Fang

作者单位: Department of chemistry, Tongji University, Shanghai 200092, PR China

会议类型: 国际会议

会议名称: the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))

会议地点: 太原

会议语种:英文

页码: 78-83

在线出版日期: 2012-07-13（万方平台首次上网日期，不代表论文的发表时间）