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Controlled Synthesis of Recyclable, Porous FMO/C@TiO 2 Core–Shell Nanofibers with High Adsorption and Photocatalysis Properties for the Efficient Treatment of Dye Wastewater
Author(s) -
Chen Dezhi,
Liu Caixia,
Chen Suhua,
Shen Weisong,
Luo Xubiao,
Guo Lin
Publication year - 2016
Publication title -
chempluschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.801
H-Index - 61
ISSN - 2192-6506
DOI - 10.1002/cplu.201500534
Subject(s) - nanofiber , photocatalysis , chemical engineering , adsorption , nanocomposite , composite number , chemistry , x ray photoelectron spectroscopy , superparamagnetism , materials science , nanoparticle , scanning electron microscope , nanotechnology , composite material , magnetization , organic chemistry , catalysis , physics , quantum mechanics , magnetic field , engineering
Abstract One‐dimensional magnetite/manganese iron oxide modified by carbon coating and with TiO 2 nanoparticles into core–shell composite nanofibers (FMO/C@TiO 2 ) with porous structure were fabricated using organometallic compounds as templates. The structure and physicochemical properties of the as‐obtained composite nanofibers were characterized by a series of techniques, including X‐ray diffraction, scanning electron microscopy, transmission electron microscopy, nitrogen adsorption–desorption isotherms, X‐ray photoelectron spectroscopy and UV/Vis diffuse reflectance. The results demonstrate that the one‐dimensional core–shell structure was formed by coating TiO 2 nanoparticles onto a substrate of FMO/C nanofibers. The porous nanostructures and photoresponse range of the composite nanofibers can be controlled by varying the proportion of both template and titanium source. The resultant composite nanofibers exhibited highly efficient removal of dye from wastewater by combining adsorption and photocatalysis processes. In addition, the composite nanofibers are superparamagnetic, and can be recovered by magnet easily with almost no decline in the removal efficiency. The facile synthesis strategy used here might provide a universal and efficient method to fabricate one‐dimensional magnetic nanocomposites with porous structures for various functional applications.