Microstructure and phase transformation behavior of doped nanostructured titania
Microstructure and phase transformation behavior of doped nanostructured titania
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DOI：
10.1016/s0025-5408(99)00113-0
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发表时间：
1999-06-01
影响因子：
5.4
通讯作者：
Okubo, T
中科院分区：
文献类型：
--
作者：
Nair, J;Nair, P;Okubo, T
研究了掺杂纳米二氧化钛的微结构和相变行为，以期了解其在催化和电子陶瓷领域可能应用的微结构发展。溶胶-凝胶法制备的纳米二氧化钛凝胶被用作前驱体。利用差热分析（DTA）和X射线衍射（XRD）研究了锐钛矿向金红石的转变。使用场发射扫描电子显微镜（FE-SEM）和表面积测量监测纳米结构的发展。Cu和Ni促进了相变和烧结。另一方面，La阻碍了转变和致密化。还研究了二氧化钛与La和Cu的共掺杂，以观察共掺杂是否影响La掺杂样品的致密化行为。(C)1999 Elsevier Science Ltd.
Microstructure and phase transformation behavior of doped nanostructured titania has been studied with a view to understanding the microstructural development for possible applications in the areas of catalysis and electronic ceramics. Sol-gel derived anatase titania gel was used as the precursor. Anatase-to-rutile transformation was studied using differential thermal analysis (DTA) and X-ray diffraction (XRD). The nanostructural development was monitored using field emission scanning electron microscopy (FE-SEM) and surface area measurements. Cu and Ni enhanced transformation as well as sintering. On the other hand, La retarded both transformation and densification. Co-doping of titania with La and Cu was also studied, to see whether co-doping affected the densification behavior of the La-doped samples. (C) 1999 Elsevier Science Ltd.