摘要
在室温下,通过酸诱导液相沉积的方法,制备出了二氧化锗(GeO2)颗粒。制得的GeO2颗粒通过扫描电子显微镜(SEM),透射电子显微镜(TEM)和X射线衍射(XRD)进行表征。实验结果表明,向前驱液中加入酸,可以诱导锗酸根离子转化成立方体型的GeO2颗粒析出。而向反应液中再加入少量的聚乙烯吡咯烷酮(PVP)后,会析出纺锤体型的GeO2晶体颗粒。
GeO2 particles were synthesized at an early stage of room temperature acid-induced homogenous liquid phase precipitation process. With addition of polyvinyl pyrrolidone （PVP）, the spindle-like GeO2 particles were obtained. The microstructure of GeO2 crystals were characterized by scanning electron microscopy （SEM）, transmission electron microscopy （TEM）, and X-ray diffraction （XRD）. The results indicate that adding acids can induce germanate ions to precipitate GeO2 cube particles. With addition of PVP, the precipitated GeO2 particles have spindle-like shapes. The morphologies of GeO2 particles induced by the addition of surfaetant and the growth mechanism conform to BFDH and HP crystal growth patterns.
出处
《青岛科技大学学报（自然科学版）》
CAS
北大核心
2012年第6期551-555,共5页
Journal of Qingdao University of Science and Technology:Natural Science Edition
基金
国家自然科学基金资助项目(50802046)
关键词
二氧化锗
酸诱导液相沉积法
聚乙烯吡咯烷酮
纺锤体型颗粒
germanium dioxide
acid-induced liquid phase deposition
polyvinyl pyrroli-done
spindle-like particles
