摘要
以离子交换法制备的氧化钼溶胶为前驱体,在水热条件下制备了单晶MoO3纳米带,对样品进行了XRD、SEM和TEM分析。通过考察水热反应温度和时间对产物结构和形貌的影响,结合材料热力学和动力学理论,探讨了MoO3纳米带在水热条件下的生长机理。离子交换法制备的溶胶在水热条件下首先转变为热力学亚稳相h-MoO3六角柱,随着温度的升高和时间的延长,h-MoO3按照溶解-重结晶过程转变为稳定相α-MoO3纳米带。
Molybdenum trioxide nanobehs were been synthesized by using stable MoO3 sols as precursor under hydrothermal condition. The structure and morphology of the samples were characterized by XRD, SEM and TEM. The growth mechanism of the MoO3 nanbehs was investigated by studying the influence of hydrothermal temperature and reaction time on the structure and morphology of the products. The MoO3 sols obtained by ion exchange method were firstly tansformed into metastable h-MoO3 microrods, and subsequently stable orthorhombic MoO3 nanobehs were formed with the reaction temperature and time.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2007年第11期1895-1900,共6页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金资助项目(No.50672071
50672072)
关键词
水热法
MOO3
纳米带
生长机理
hydrothermal method
MOO3
nanobelt
growth mechanism
