Low Temperature Synthesis and Photocatalytic Activity of Rutile TiO2 Nanorod Superstructures

详细信息    查看全文

• 作者：Yawen Wang ; Lizhi Zhang ; Kejian Deng ; Xinyi Chen ; Zhigang Zou
• 刊名：Journal of Physical Chemistry C
• 出版年：2007
• 出版时间：February 15, 2007
• 年：2007
• 卷：111
• 期：6
• 页码：2709 - 2714
• 全文大小：493K
• 年卷期：v.111,no.6(February 15, 2007)
• ISSN：1932-7455

文摘

Pure rutile nanorods were synthesized by hydrolysis of TiCl₄ ethanolic solution in water at 50 C. The assemblyof rutile nanorods could be controlled through simply changing the molar ratios of TiCl₄, ethanol, and water,resulting in different superstructures with flower- or urchinlike morphologies. The resulting samples werecharacterized with X-ray diffraction, scanning electron microscopy, transmission electron microscopy, high-resolution transmission electron microscopy, nitrogen sorption, and UV-vis diffuse reflectance spectrum. Apossible mechanism for the growth and assembly of rutile nanorod superstructures was proposed on the basisof characterization results. More importantly, we found that those low temperature synthesized superstructuresshowed significantly higher photocatalytic activities than commercial photocatalyst P25 on degradation ofrhodamine B in water under artificial solar light. This study provides a simple and inexpensive way to preparehigh active rutile nanorods superstructures photocatalysts on a large scale.