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Cover Picture: A Liquid‐Liquid Interface Process for Fabricating TiO 2 Nanofiber Membrane with High Photocatalytic Activity (Chin. J. Chem. 7/2012)
Author(s) -
Zhu Lianwen,
Ren Zhigang,
Lang Jianping
Publication year - 2012
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201290018
Subject(s) - nanofiber , nanometre , chemistry , membrane , photocatalysis , chemical engineering , porosity , adsorption , hexane , nanotechnology , layer (electronics) , chromatography , organic chemistry , materials science , catalysis , biochemistry , engineering
The cover picture shows that a liquid‐liquid interface reaction was designed to prepare TiO 2 nanofiber membrane for water purification. When tetra‐ n ‐butyl titanate hydrolyzes, it immediately forms one layer of TiO 2 particles at the water/ n ‐hexane interface. The as‐formed TiO 2 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.