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金属离子掺杂对TiO₂/白云母纳米复合材料中TiO₂的颗粒形态及相组成的影响

Influence of metal ions on the morphology and phase composition of titanium dioxide in TiO₂/muscovite nanocomposites

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【Author】 Song Gong Bao 1)2) Liu Fu\|Sheng 2) Peng Tong\|Jiang 2) Liang Jing\|Kui 1) Rao Guang\|Hui 1) 1) (Institute of Physics, Chinese Academy of Sciences, Beijing\ 100080, China) 2) (Institute of Mineral Mat

【机构】中国科学院物理研究所,西南科技大学矿物材料及应用研究所,西南科技大学矿物材料及应用研究所,中国科学院物理研究所,中国科学院物理研究所北京100080；西南科技大学矿物材料及应用研究所,绵阳621002,绵阳621002,绵阳621002,北京100080,北京100080；

【摘要】采用化学液相沉积法制备了系列未掺杂和掺杂不同金属离子的TiO2 白云母纳米复合材料 .利用扫描电子显微镜 (SEM) ,x射线衍射 (XRD)对其TiO2 薄膜的TiO2 颗粒形态和相组成进行了详细研究 .结果表明 ,TiO2 颗粒在15— 5 0nm之间 ;除球形颗粒外 ,掺杂Mn2 + ,Zn2 + 的样品中还出现有金红石柱状颗粒 .TiO2 薄膜中相组成以锐钛矿、金红石共存为特征 ;掺杂金属离子对TiO2 相组成的影响取决于金属离子的离子半径、电荷及配位体特征 .更多还原

【Abstract】 Some samples of TiO 2/muscovite nanocomposite undoped and doped with metal ions were prepared by chemical liquid phasa deposition. The morphology and phase composition of TiO 2 film were studied by scanning electron microscopy and x ray diffraction. The results showed that the grain size of the TiO 2 particles ranges from 15 to 50 nm. Besides circular grains, there were some euhedral rutile grains in the samples doped with Zn 2+ and Mn 2+ ions. Rutile and anatase were found in the TiO 2 film. The influence of doped metal ions on the phase composition of TiO 2 film was determined by radius, charge and ligand of metal ions.更多还原