A facile route to the synthesis of magnetically separable BiOBr/NiFe 2 O 4 composites with enhanced photocatalytic performance
作者： Xiaowei Li , Li Wang , Lei Zhang , Shuping Zhuo
DOI: 10.1016/J.APSUSC.2017.05.013
关键词: Photodegradation 、 Scanning electron microscope 、 Composite material 、 Photocatalysis 、 Nanorod 、 X-ray photoelectron spectroscopy 、 Nanocomposite 、 Composite number 、 Phenol 、 Materials science
摘要: Abstract Novel magnetically separable BiOBr/NiFe2O4 composite photocatalysts with different mass ratios were fabricated through a facile hydrothermal treatment. The phases, morphologies and photophysical properties of the as-obtained samples characterized by X-ray diffraction (XRD), energy dispersive spectrometry (EDS), photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission microcopy (TEM) diffuse reflection (DRS). Their visible light photocatalytic performances examined degradation methylene blue (MB) phenol. Compared bare BiOBr NiFe2O4, all heterostructured nanocomposites exhibited significantly enhanced efficiency. BiOBr/NiFe2O4-20% showed highest photodegradation capacity, which was about 3.2 22.4 times greater than that individual respectively. efficiency in MB dye hardly changed after five cycles, signifying photocatalyst had excellent recyclability. In addition, could be easily separated from contaminant solution using magnet recycled, exhibiting great potential for application fields environmental purification organic pollutants wastewater experimental results, we proposed mechanism confirmed enhancement performance composites mainly ascribed to efficient separation photo-induced charges resulting well-known “heterostructure effect” between NiFe2O4 nanorods nanosheets.
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