Smirnova Natalia, Fesenko Tatiana, Zhukovsky Maxim, Goworek Jacek, Eremenko Anna
O.Chuiko Institute of Surface Chemistry, Ukrainian National Academy of Sciences, 17 General Naumov, Kyiv, 03680, Ukraine.
Faculty of Chemistry, Maria Curie-Skłodowska University, Pl. Maria Curie-Skłodowskiej 3, 2-031, Lublin, Poland.
Nanoscale Res Lett. 2015 Dec;10(1):500. doi: 10.1186/s11671-015-1210-y. Epub 2015 Dec 29.
TiO2 films prepared by template-assisted sol-gel method were characterized by X-ray diffraction spectroscopy, scanning and atomic force electron microscopy, and Fourier transform infrared (FT-IR) spectroscopy. Based on the hexane adsorption-desorption analysis, the films have a surface area of 390-540 m(2)/g with pore size distribution narrowly centered around 10 nm. Optimal component ratio and condition of heat treatment of mesoporous titania films have been found. Photocatalytic activity of the coatings was determined by the destruction of stearic acid layers, monitored using FT-IR spectroscopy and laser desorption-ionization (LDI) mass spectrometry. Under UV illumination, all the used films reach hydrophilicity with water contact angle of 0°. As the result, hydrophobic fat acid molecules undergo self-association and active desorption from the hydrophilic surface during mass-spectrometric experiment.
通过模板辅助溶胶 - 凝胶法制备的二氧化钛薄膜采用X射线衍射光谱、扫描和原子力电子显微镜以及傅里叶变换红外（FT - IR）光谱进行表征。基于己烷吸附 - 解吸分析，这些薄膜的表面积为390 - 540 m²/g，孔径分布狭窄，中心约为10 nm。已发现介孔二氧化钛薄膜的最佳组分比例和热处理条件。通过使用FT - IR光谱和激光解吸电离（LDI）质谱监测硬脂酸层的破坏来测定涂层的光催化活性。在紫外光照下，所有使用的薄膜均达到亲水性，水接触角为0°。结果，在质谱实验期间，疏水性脂肪酸分子在亲水性表面上发生自缔合并进行活性解吸。
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