| 聚乙烯吡咯烷酮对酸诱导液相沉积体系中GeO_2颗粒形貌的影响 |
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| 引用本文： | 孙伟,吴大雄,敬承斌.聚乙烯吡咯烷酮对酸诱导液相沉积体系中GeO_2颗粒形貌的影响[J].青岛科技大学学报,2012(6):551-555. |
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| 作者姓名： | 孙伟 吴大雄 敬承斌 |
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| 作者单位： | 青岛科技大学材料科学与工程学院;华东师范大学基地材料与器件教育部重点实验室 |
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| 基金项目： | 国家自然科学基金资助项目(50802046) |
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| 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。
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| 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 |
Effects of PVP on the Morphology Evolution of GeO2 Particles Precipitated from an Acidized Aqueous Germanate Ion Solution |
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| SUN Wei,WU Da-xiong,JING Cheng-bin.Effects of PVP on the Morphology Evolution of GeO2 Particles Precipitated from an Acidized Aqueous Germanate Ion Solution[J].Journal of Qingdao University of Science and Technology:Natutral Science Edition,2012(6):551-555. |
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| Authors: | SUN Wei WU Da-xiong JING Cheng-bin |
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| Affiliation: | 1.College of Materials Science and Engineering,Qingdao University of Science and Technology,Qingdao 266042,China; 2.Key Laboratory of Polar Materials and Devices,Ministry of Education,East China Normal University,Shanghai 200241,China) |
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| Abstract: | 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 surfactant and the growth mechanism conform to BFDH and HP crystal growth patterns. |
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| Keywords: | germanium dioxide acid-induced liquid phase deposition polyvinyl pyrrolidone spindle-like particles |
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