水热法合成NiO-MgO纳米粒子  

Preparation of NiO-MgO Nano-Particles by Hydrothermal Method

作　　者：梁英[1] 范晶[1] 贾志杰[1] 

机构地区：[1]华中师范大学纳米科技研究中心,武汉430079

出　　处：《应用化学》2007年第6期726-728,共3页Chinese Journal of Applied Chemistry

基　　金：湖北省武汉市重大项目纳米专项资金(20041003068-09)

摘　　要：采用水热法，以硫酸镍和硫酸镁为主要原料，在150℃制备出结构稳定的NiO—MgO纳米粒子。并用扫描电子显微镜、X射线衍射和能谱等测试技术对NiO-MgO纳米粒子的结构和形貌进行表征。表征结果显示．制得的NiO—MgO呈颗粒状，其直径为10—40nm。水热法制得的粉体和经过380℃煅烧所得的样品，结构和形貌基本保持不变；经690℃高温煅烧后，形成了良好的NiO—MgO固溶体，晶化程度提高，分散性比较好。NiO-MgO nano-particles were successfully prepared by the hydrothermal method with NiSO4 and MgSO4 as raw material. Microstructure and morphology of the product were characterized by means of scan electron microscopy, X-ray diffraction and energy dispersive X-ray spectroscopy. The results show the particle has a sphere-like apparent structure, and the diameter of the particle is in a range of 10 - 40 nm. Compared with the particles prepared by the hydrothermal method, the microstructure and morphology of the sample sintered at 380 ℃ remain unchanged. When the sample is sintered at 690 ℃, the crystallization degree is improved, and the particles are well dispersed. The particles exhibited a high stability when used as catalyst.

关 键 词：NiO-MgO 纳米粒子 水热法 

分 类 号：O614.8[理学—无机化学]