期刊
NANOSCALE RESEARCH LETTERS
卷 7, 期 -, 页码 -出版社
SPRINGER
DOI: 10.1186/1556-276X-7-89
关键词
TiO2; superhydrophilic; precursor temperature; anatase phase; growth behavior
资金
- SRC of Center for Plasma Bioscience Research [NRF-20100029417]
- Priority Research Centers Program [NRF-20100029699]
- National Research Foundation of Korea [2009-0094023, 2010-0029417] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The hydrophilic TiO2 films were successfully deposited on slide glass substrates using titanium tetraisopropoxide as a single precursor without carriers or bubbling gases by a metal-organic chemical vapor deposition method. The TiO2 films were employed by scanning electron microscopy, Fourier transform infrared spectrometry, UV-Visible [UV-Vis] spectroscopy, X-ray diffraction, contact angle measurement, and atomic force microscopy. The temperature of the substrate was 500 degrees C, and the temperatures of the precursor were kept at 75 degrees C (sample A) and 60 degrees C (sample B) during the TiO2 film growth. The TiO2 films were characterized by contact angle measurement and UV-Vis spectroscopy. Sample B has a very low contact angle of almost zero due to a superhydrophilic TiO2 surface, and transmittance is 76.85% at the range of 400 to 700 nm, so this condition is very optimal for hydrophilic TiO2 film deposition. However, when the temperature of the precursor is lower than 50 degrees C or higher than 75 degrees C, TiO2 could not be deposited on the substrate and a cloudy TiO2 film was formed due to the increase of surface roughness, respectively.
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