標題: Self-cleaning characteristics on a thin-film surface with nanotube arrays of anodic titanium oxide
作者: Chen, Chien-Chon
Lin, Jin-Shyong
Diau, Eric Wei-Guang
Liu, Tzeng-Feng
材料科學與工程學系
應用化學系
應用化學系分子科學碩博班
Department of Materials Science and Engineering
Department of Applied Chemistry
Institute of Molecular science
公開日期: 1-Aug-2008
摘要: Self-cleaning of a surface of nanotube arrays of anodic titanium oxide (ATO) is demonstrated. The ATO was prepared in fluoride ion containing sulfate electrolytes with a structure of 0.4 mu m length, 100 nm pores diameter, 120 nm interpore distance, 25 nm pore wall thickness, a 8x10(9) pores cm(-2) pore density, and 68.2% porosity. Prepared as thin films either directly from a Ti foil or on a glass substrate, these arrays have the property that water drops spread quickly over the surface of the films without irradiation. In contrast, a flat anatase TiO2 film requires irradiation with UV light for several minutes before the contact angle decreases to zero. The observed self-cleaning behavior of the ATO thin films is due to the capillary effect of the nanochannel structure and the superhydrophilic property of the anatase TiO2 surface inside the tube.
URI: http://dx.doi.org/10.1007/s00339-008-4546-7
http://hdl.handle.net/11536/29087
ISSN: 0947-8396
DOI: 10.1007/s00339-008-4546-7
期刊: APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
Volume: 92
Issue: 3
起始頁: 615
結束頁: 620
Appears in Collections:Conferences Paper


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