期刊
MATERIALS RESEARCH BULLETIN
卷 48, 期 5, 页码 1885-1890出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2013.01.038
关键词
Composites; Magnetic materials; Catalytic properties
资金
- National Natural Science Foundation of China [51202020]
- International Science and Technology Cooperation Program of Changzhou City [CZ20110022]
- Science and Technology Department of Jiangsu Province [BY2012099]
- Qing Lan Project of Jiangsu Province
- Priority Academic Program Development of Jiangsu Higher Education Institutions
We reported a facile co-precipitation method to prepare a highly active Fe3O4@graphene oxide (Fe3O4@GO) composite catalyst, which was fully characterized by means of X-ray diffraction (XRD), Fourier transformed infrared (FTIR) spectroscopy, transmission electron microscopy (TEM) and N-2(center dot) adsorption-desorption measurements. The results demonstrated that the Fe3O4 nanoparticles (Fe3O4 NPs) with a small diameter of around 12 nm were densely and evenly deposited on the graphene oxide (GO) sheets. The as-prepared Fe3O4@GO composite was explored as a catalyst to reduce a series of nitroarenes for the first time, which exhibited a great activity with a turnover frequency (TOF) of 3.63 min(-1), forty five times that of the commercial Fe3O4 NPs. The dosages of catalyst and hydrazine hydrate are both less than those reported. Furthermore, the composite catalyst can be easily recovered due to its magnetic separability and high stability. (C) 2013 Elsevier Ltd. All rights reserved.
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