【摘要】 为考察不同镁盐对氧化镁晶须形貌的影响,以3种镁盐为原料,碳酸钠为沉淀剂制备了不同形貌的氧化镁晶须。采用X射线衍射仪和扫描电子显微镜对产物进行了表征。结果表明,采用不同镁盐为原料虽均可得到纯相的氧化镁晶须,但以氯化镁为原料制备的晶须表面光滑,质量较高,而以硝酸镁和硫酸镁为原料制备的晶须表面较粗糙。研究发现,这些形貌上的差别主要是由于溶液中pH的差异而引起的。更多还原

【Abstract】 For the purpose of investigating the effect of different magnesium salts on the morphologies of MgO whiskers,magnesium oxide（MgO） whiskers with different morphologies were synthesized by employing three kinds of magnesium salts as raw materials and Na₂CO₃ as precipitant.The composition,morphology and structure of these whiskers were characterized by X ray diffraction and scanning electron microscopy.The results indicated that pure MgO whiskers could be obtained although the raw materials were different.Furthermore,MgO whiskers synthesized by employing MgCl₂·6H₂O as raw materials were well shaped with smooth surface,while employing Mg(NO₃)₂·6H₂O or MgSO₄·7H₂O as raw materials,the surface of MgO whiskers was coarse.The investigation indicated that the difference of pH value was the main factor.更多还原