摘要
利用X射线衍射仪(XRD)和热场发射透射电镜(TEM)分别对在弱磁场下通过低温中和法制备的纳米MnOOH进行相成分和颗粒形貌分析。试验结果表明:在弱磁场下,锰的氢氧化物的沉淀物由无磁场下的Mn(OH)2向MnOOH转变。随着弱磁场强度增大,MnOOH颗粒进一步细化,在0．5 T弱磁场下制备出了粒径达30 nm左右MnOOH颗粒,并且纳米MnOOH颗粒的粒度分布均匀。此外,弱磁场不影响MnOOH的结晶度。
The phase constituent and the particle pattern of nanometer MnOOH, prepared by low-temperature neutralization reaction with low magnetic field are analyzed with XRD and TEM, respectively. The experimental results turn out that the Mn（OH）2 phase of magnetic field free is turned into the MnOOH phase in low magnetic fields. With the increase of low magnetic field, the nanometer MnOOH particle is refined further. The MnOOH of about 30 nm in grain size is prepared in a low magnetic field of 0.5 T, and the granularity distributing of nanometer MnOOH is homogeneous. Besides, low magnetic field has not influence on the crystallinity of nanometer MnOOH.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2006年第A02期351-354,共4页
Rare Metal Materials and Engineering
基金
国家自然科学基金(50404018)
全国优秀博士学位论文作者基金资助项目(200235)
上海市科委纳米专项基金(0252nm048)
关键词
弱磁场
低温中和法
纳米
MnOOH
low magnetic field
low-temperature neutralization method
nanometer
MnOOH
