Ethylene glycol-mediated synthesis of nanoporous anatase TiO₂ rods and rutile TiO₂ self-assembly chrysanthemums

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• 作者：Quanjun Li ; Bingbing Liu ; Yingai Li ; Ran Liu ; Xianglin Li ; Dongmei Li ; Shidan Yu ; Dedi Liu ; Peng Wang ; Bing Li ; Bo Zou ; Tian Cui ; Guangtian Zou
• 关键词：Nanostructured materials ; Chemical synthesis ; Crystal structure ; Scanning electron microscopy (SEM)
• 刊名：Journal of Alloys and Compounds
• 出版年：2009
• 出版时间：5 March 2009
• 年：2009
• 卷：471
• 期：1-2
• 页码：477-480
• 全文大小：953 K

文摘

Nanoporous anatase TiO₂ rods and rutile TiO₂ chrysanthemums were successfully synthesized via a simple ethylene glycol-mediated synthesis route. Their morphologies, phase compositions and components were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman and IR, respectively. The results show that a self-assembly growth takes place in the calcination under vacuum, which makes the titanium glycolate rods transform into rutile TiO₂/C chrysanthemums rather than anatase TiO₂ rods. It also indicates that the carbon plays an important role in the phase transition process which promotes the phase transition to rutile TiO₂ at a lower temperature (400 °C). It provides a new approach to prepare nanoporous rutile TiO₂ nanomaterials under low temperature.