Growth of crystals in titania-based amorphous gels

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• 作者：Z.M. Shi^a ; ^{shizm@imut.edu.cn} ; Tana Bao^a ; ^b ; ^{tana029@163.com}
• 关键词：Amorphous ; Titania ; Phase transformation ; Orientation growth ; HRTEM ; Dislocation
• 刊名：Journal of Non-Crystalline Solids
• 出版年：2017
• 出版时间：1 March 2017
• 年：2017
• 卷：459
• 期：Complete
• 页码：75-82
• 全文大小：3404 K
• 卷排序：459

文摘

Anatase, rutile and SnO2 crystals independently precipitate from amorphous gels. Allotropic transformation of anatase to rutile is dominant in undoped case. SnO2 crystals act as heterogeneous nucleating sites for rutile growth. Coherent and semi-coherent growths of rutile are dominant In Sn-doped case. Fine anatase and rutile crystals are obtained by Sn-doping.