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Controllable Fabrication of TiO 2 1D‐Nano/Micro Structures: Solid, Hollow, and Tube‐in‐Tube Fibers by Electrospinning and the Photocatalytic Performance
Author(s) -
Lang Leiming,
Wu Di,
Xu Zheng
Publication year - 2012
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201200378
Subject(s) - materials science , calcination , electrospinning , anatase , photocatalysis , tube (container) , nanofiber , fabrication , coaxial , chemical engineering , nanotechnology , composite material , nano , porosity , rutile , catalysis , polymer , chemistry , medicine , biochemistry , alternative medicine , engineering , pathology , electrical engineering
The solid, hollow, and tube‐in‐tube porous nanofiber structures of TiO 2 are synthesized successfully by a simple non‐coaxial electrospinning method without using a complicated coaxial jet head, combined with adjusting the concentration of the TiO 2 precursor and the pinhole diameter of the jet head and by final calcination. The formation mechanisms of different structured TiO 2 fibers are discussed in detail. This method is facile and effective, and easy to scale up. Furthermore, it is a versatile method for constructing tube‐in‐tube fibers of other metal oxides such as ZrO 2 , SiO 2 , SnO 2 , and In 2 O 3 . The photocatalytic activity of tubular TiO 2 nanofibers for the degradation of 2‐chlorophenol and 2,4‐dichlorophenol under UV or visible‐light irradiation is better than the one of commercial available TiO 2 powder, rutile, and anatase TiO 2 fibers.