期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 144, 期 -, 页码 863-869出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2013.08.019
关键词
Core/shell; Magnetic; Photocatalysis; Visible light; Recyclable
资金
- National Natural Science Foundation of China [20971001, 51002001, 20371002]
- NSFC-CAS Joint Fund for Research Based on Large-Scale Scientific Facilities [10979014]
- Program for New Century Excellent Talent in University
- Ministry of Education, China [NCET-08-0617]
- 211 Project of Anhui University
Magnetic Fe3O4@C/Cu and Fe3O4@CuO nanocomposites with a core/shell structure have been successfully synthesized via direct calcinations of magnetic Fe3O4@HKUST-1 in different atmosphere (N-2 and air). The morphology, structure, magnetic and porous properties of the as-synthesized nanocomposites were characterized by using scanning electron microscope (SEM), transmission electron microscopy (TEM), powder X-ray diffraction (PXRD), vibration sample magnetometer (VSM), and N-2 sorption-desorption isotherms. The results show that the nanocomposite materials consist of a Fe3O4 core and a C/Cu (or CuO) shell. Fe3O4@C/Cu nanocomposites show more powerful photocatalytic activity for the degradation of methylene blue (MB) under visible light irradiation in the presence of H2O2 in comparison with Fe3O4@CuO nanocomposites and the most common photocatalyst titanium dioxide (TiO2), as well as the recently developed organic semiconductor graphitic carbon nitride (g-C3N4). Meanwhile, the catalyst is stable during the reaction and the high Ms value (39.2 emu g(-1)) of the as-prepared magnetic composites is favorable for the separation and recycling of the catalyst from the reaction media after the catalytic reactions. (C) 2013 Elsevier B.V. All rights reserved.
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