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1582946 
Journal Article 
Preparation and characterization of bifunctional, Fe3O4/ZnO nanocomposites and their use as photocatalysts 
Xia, J; Wang, A; Liu, X; Su, Z 
2011 
Yes 
Applied Surface Science
ISSN: 0169-4332 
257 
23 
9724-9732 
WOS:000293883400006 
Bifunctional magnetic-optical Fe3O4/ZnO nanocomposites with
different molar ratio were successfully synthesized by a facile two-step strategy. Compared with
the other methods, it was found to be mild, inexpensive, green, convenient and efficient. Fe3O4
nanocrystal was used as seed for the deposit and growth of ZnO nanoparticle. A series of the
characterizations manifested that the combination of Fe3O4 with ZnO nanoparticles was successful.
Photocatalytic activity studies confirmed that as-prepared nanocomposites had excellent
photodegradating behavior to Methyl Orange (MO) compared to the pure ZnO nanoparticles. The
results showed that the degradation percentage of MO was about 93.6% for 1 h when the amount of
catalyst was 0.51 g L-1 and initial concentration of MO was 6 x 10(-5) mol L-1 in the pH 7
solution. Moreover, the kinetics of photocatalytic degradation reaction could be expressed by the
first-order reaction kinetic model. Furthermore, the Fe3O4/ZnO nanocomposites could be also
served as convenient recyclable photocatalysts because of their magnetic properties. (C) 2011
Elsevier B. V. All rights reserved. 
Fe3O4/ZnO nanocomposites; Photoluminescence properties; Magnetic properties; Recycle photocatalysts