期刊
APPLIED SURFACE SCIENCE
卷 392, 期 -, 页码 701-707出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2016.09.099
关键词
CuFe2O4/AgBr composites; Photocatalytic mechanism; Visible-light; Photocatalysis Magnetic separation
类别
资金
- Institute of Environmental Sciences, Zhengzhou University
The CuFe2O4 and CuFe2O4/AgBr composites with different CuFe2O4 contents were prepared by a facile sol-gel and hydrothermal method, respectively. The as-synthesized photocatalysts were characterized by means of powder X-ray diffraction (XRD), scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS), and UV-vis diffuse reflectance spectrum (UV-vis DRS). Their magnetic properties, photocatalytic degradation activities on methyl orange (MO) and tetracycline hydrochloride (TC) solution and photocatalytic mechanism were investigated in detail. The results revealed that the CuFe2O4/AgBr composites exhibited significantly higher photocatalytic activities than the pure CuFe2O4. The enhanced photocatalytic activity could be attributed to the matched band structure of two components and more effective charge transportation and separations. In addition, the quenching investigation of different scavengers demonstrated that h(+), (OH)-O-center dot, O-center dot(2)- reactive species played different roles in the decolorization of MO and degradation of TC.(C) 2016 Elsevier B.V. All rights reserved.
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