Chinese Journal of Chemistry
Copyright © 2015 SIOC, CAS, Shanghai & WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Cover Picture: A Liquid-Liquid Interface Process for Fabricating TiO2 Nanofiber Membrane with High Photocatalytic Activity (Chin. J. Chem. 7/2012)
The cover picture shows that a liquid-liquid interface reaction was designed to prepare TiO2 nanofiber membrane for water purification. When tetra-n-butyl titanate hydrolyzes, it immediately forms one layer of TiO2 particles at the water/ n-hexane interface. The as-formed TiO2 particles further react with NaOH to form high-quality nanofibers with lateral dimensions below 200 nm and longitudinal dimensions of several tens of micrometers. The membrane is thus formed at the interface by the interpenetration and overlapping of the flexible nanofibers and distributed by holes with sizes ranging from several tens of nanometers to several hundreds of nanometers. Benefiting from such a porous structure, this nanofiber membrane exhibited a high dye adsorption capacity and a high efficiency in the photodecomposition of dyes in water. More details are discussed in the article by Lang et al. on page 1469–1473.