Fabrication of Transparent Hydrophilic Nanosized TiO₂ Films via Layer-by-Layer Self-Assembly

Abstract:

The transparent nanosized TiO₂ film was fabricated by a layer-by-layer assembly method starting from the highly dispersed anatase oppositely charged TiO₂ nanoparticles without using anypoly electrolytes. The positively charged TiO₂ nanoparticles (ca.7 nm) and negatively charged TiO₂ nanoparticles (ca.7 nm) were synthesized by a subsequently hydrothermal process. Field-emission scanning electron microscopy, UV-vis transmittance spectra and Contact angle measurement were employed to characterize TiO₂films.By the treatment of 500°C for 2hrs, the nanostructured TiO₂ film showed a water contact angle of below 10°andthe relative transmittance to quartz glass of over 90%.

• Periodical: Materials Science Forum (Volume 852)
• Pages: 1075-1079
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.852.1075
• Online since: April 2016
• Authors: Zhi Yong Zeng, Ying Shi, Su Jun Yuan, Jian Jun Xie
• Keywords: Hydrophilicity, Layer-by-Layer Self-Assembly, Nanosize, Titanium Dioxide

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