Continuous Fabrication of Free-Standing TiO2 Nanotube Array Membranes with Controllable Morphology for Depositing Interdigitated Heterojunctions
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- 作者：Daoai Wang ; Lifeng Liu
- 刊名：Chemistry of Materials
- 出版年：2010
- 出版时间：December 28, 2010
- 年：2010
- 卷：22
- 期：24
- 页码：6656-6664
- 全文大小：1455K
- 年卷期：v.22,no.24(December 28, 2010)
- ISSN：1520-5002
文摘
Free-standing and through-hole TiO2 nanotube array membranes were fabricated via a novel electrochemical in situ separation process, by taking advantage of conventional anodization of Ti, followed by the application of a large voltage pulse for a short time. The TiO2 nanotube membranes are mechanically robust and can be obtained over a large area. It was found that the size of the opened tube mouth can be readily adjusted by the applied voltage pulses, thus making the resulting nanotube membranes favorable for use in bioseparation. More importantly, the in situ separation process allows continuous fabrication of such free-standing, through-hole TiO2 nanotube array membranes. In addition, these nanotube membranes can be used to prepare interdigitated heterojunction nanocables and are expected to find potential applications in various photoelectric devices, flow-through photocatalysis, and bioinfiltration.