期刊
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
卷 46, 期 -, 页码 203-211出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2016.10.032
关键词
Electrochemical anodization; Superhydrophilic; Nanowebs; Nanofibrils; Titanium dioxide; Surface topology
资金
- DGIST R&D Program of the Ministry of Education, Science and Technology of Korea [16-BD-0404]
- Basic Science research program through the National Research Foundation of Korea - Ministry of Science, ICT & Future Planning [2013R1A1A008678, 2014K1A3A1A47067086]
- Technology Development Program to Solve Climate Changes of the National Research Foundation (NRF) - Ministry of Science, ICT & Future Planning [2015M1A2A2074670]
- DGIST RD Program
- MIREBraiN Program of the Ministry of Science, ICT & Future Planning [15-01-HRSS01]
- National Research Foundation of Korea [2014K1A3A1A47067086] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
In the present work we report a facile and readily-scalable electrochemical anodization technique for preparation of superhydrophilic TiO2 films having reversible wettability properties. The electrochemically anodized Titanium (Ti) foils manifest nanoscale topographical features, interconnected nanowebs and nanofibrils, that enhance both surface roughness and light absorption. After 5 min of UV illumination a water contact angle (WCA) of 4.8 degrees is measured for a 5 mu L deionized water droplet, while after 5 min of whitelight illumination the WCA is 3.2 degrees. Moreover, under UV illumination the superhydrophilic Ti foils exhibit self-cleaning properties. Key factors contributing to the superhydrophilic character include surface topology, and surface chemical reactions. (C) 2016 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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