A Facile Approach for Controlling the Orientation of One-Dimensional Mesochannels in Mesoporous Titania Films

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• 作者：Feng Shan ; Xuemin Lu ; Qian Zhang ; Jun Wu ; Yuzhu Wang ; Fenggang Bian ; Qinghua Lu ; Zhaofu Fei ; Paul J. Dyson
• 刊名：The Journal of the American Chemical Society
• 出版年：2012
• 出版时间：December 19, 2012
• 年：2012
• 卷：134
• 期：50
• 页码：20238-20241
• 全文大小：324K
• 年卷期：v.134,no.50(December 19, 2012)
• ISSN：1520-5126

文摘

Controlling of the orientation of mesochannels in mesostructured thin films is important for the development of novel molecular devices and, in particular, generating vertically aligned mesochannels with respect to the substrate plane is extremely challenging for nonsiliceous materials. We describe a facile and highly effective air flow method, which is able to control the unidirectional alignment of titania mesochannels in a desired direction (e.g., parallel, perpendicular, or oblique) on a large scale, via manipulation of the air flow rate and incident angle. The titania mesochannels were characterized by TEM, SEM, SAXRD, and GISAXS. The unidirectional, vertically aligned mesostructured titania films were found to exhibit excellent ion conductivity.