水热法合成超长γ-MnOOH和α-MnO_2亚微米/纳米线  

Synthesis of Ultralongγ-MnOOH andα-MnO_2 Submicro/nanowires via Hydrothermal Proceeding

作　　者：侯少凡[1] 刘冠娆[1] 嵇天浩[1] 

机构地区：[1]北京航空航天大学材料科学与工程学院应用化学系,北京100083

出　　处：《稀有金属材料与工程》2007年第A02期159-162,共4页Rare Metal Materials and Engineering

基　　金：国家自然科学基金资助(20473007)

摘　　要：采用水热法,以KMnO_4和MnSO_4为前驱物,使用十六烷基三甲基溴化胺(CTAB)、聚乙二醇(PEG)等表面活性剂,通过对反应物比例、温度、反应时间及表面活性剂等条件的调控,分别合成了γ-MnOOH、α-MnO_2超长纳米线及亚微米/纳米棒。分别采用X射线衍射分析(XRD)、扫描电子显微镜(SEM)对产物结构及形貌进行了表征。结果表明,MnOOH为γ相,改变条件可分别得到直径约100 nm的超长纳米线和直径约为200 nm的亚微米/纳米棒:不同条件所得MnO_2均为a相、分别为直径约100 nm,长度超过20/μm纳米线和直径小于100 nm的放射状棒束。A simple hydrothermal method to prepare ultralong γ-MnOOH and α-MnO2 submicro/nanowires was described. Precursors KMnO4 and MnSO4＇H20 were used to obtain γ-MnOOH and α-MnO2 with different morphologies by adjusting the reaction condition, including reaction temperature, reaction time, surfactants, and the molar ratio of KMnO4 to MnSO4·H2O. The products were characterized by X- ray powder diffraction （XRD）, scanning electron microscope （SEM） and transmission electron microscope （TEM） techniques. The measurement results show that ultrlong γ-MnOOH and a-MnO2 submicro/nanowires with the average diameters of 100 nm and 200 nm can be prepared, respectively.

关 键 词：水热法 Γ-MNOOH α-MnO2 纳米线 

分 类 号：TB383.1[一般工业技术—材料科学与工程]