自然科学版
陕西师范大学学报(自然科学版)
化学与材料科学
Fe3O4立方体微晶的水热合成及表征
PDF下载 ()
崔晓瑞1, 张颖1, 王晔峰2*
(1 陕西师范大学 材料科学与工程学院, 2 化学化工学院,陕西 西安 710062)
崔晓瑞,女,博士研究生,主要研究方向为纳米催化剂及催化活性的研究.E-mail:xiaoruicuicui@163.com.
摘要:
在1,2-丙二醇溶剂中,以FeSO4·7H2O和KOH为原料,200 ℃水热法反应24 h,合成了Fe3O4立方体.通过对反应温度、KOH浓度、1,2-丙二醇比例对产物形貌影响,研究了KOH在Fe3O4立方体的形成过程中的作用,并提出了可能的生长机理.运用扫描电镜和X射线衍射对其颗粒结构进行表征.结果表明,Fe3O4 立方体为单晶面心立方相结构,尺寸大约为1 μm.
关键词:
水热法; 立方体Fe3O4; 纳米晶体; 形貌可控
收稿日期:
2012-06-20
中图分类号:
TQ174.1
文献标识码:
A
文章编号:
1672-4291(2013)05-0060-03
基金项目:
教育部博士点新教师基金资助项目(20090202120007); 陕西师范大学优秀博士论文资助项目(S2012YB03).
Doi:
Hydrothermal synthesis and characterization of cube Fe3O4 microcrystals
CUI Xiao-rui1, ZHANG Ying1, WANG Ye-feng2*
(1 College of Materials Science and Engineering, 2 College of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi′an 710062,Shaanxi,China)
Abstract:
The cube Fe3O4 microcrystals have been synthesized through a simple hydrothermal reaction of FeSO4 ·7H2O with KOH in 1,2-propylene glycol at 200 ℃ for 24 h. The factors affected the morphology of Fe3O4 ,such as the proportion of 1,2-propylene glycol, the concentration of KOH, and the reaction temperature,were experimentally investigated.The results showed that the concentration of KOH has a significant effect on the formation of Fe3O4 cube. The possible mechanism was also proposed to account for the growth of the cube Fe3O4 microcrystals.The morphology and structure of the microcrystals were characterized with scanning electron microscopy and powder X-ray diffraction,indicating that the Fe3O4 octahedra is single crystals with the face-center cubic structure and 1 μm in size.
KeyWords:
hydrothermal synthesis; cube Fe3O4; nanometer crystallite; well-controlled morphology