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Enhanced photocatalytic activity of Bi2Fe4O9 catalysts with EDTA modification

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Abstract

The degradation of methylene orange (MO) dye was carried out by using sol–gel derived Bi2Fe4O9 nanoparticles under the visible light irradiation with the addition of ethylenediaminetetraacetic acid (EDTA) and hydrogen peroxide (H2O2). The photocatalytic reaction can be termed a kind of photo-Fenton-like process, in which EDTA, H2O2 and visible light irradiation work together to improve the degradation rate of Bi2Fe4O9 catalysts. In the process of photocatalytic reaction, only 50 and 84 % MO removal could be achieved without the addition of EDTA; however, the MO removal could achieve about 74 and 99 % with 0.4 mmol/L of EDTA for irradiation time of 0.5 and 2 h, respectively. The variation of the FT-IR spectra evidences the surface modification effects of EDTA on Bi2Fe4O9 crystallites.

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Acknowledgments

This work was supported by National Nature Science Foundation of China under Grant No. 51302163.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Shanghai University, Shanghai, 200444, China

    Han Zhang, Tong Tong, Wen-Hui Cao, Jian-Guo Chen, Deng-Ren Jin & Jin-Rong Cheng

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  1. Han Zhang
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  2. Tong Tong
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  3. Wen-Hui Cao
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  4. Jian-Guo Chen
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  5. Deng-Ren Jin
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  6. Jin-Rong Cheng
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Correspondence to Jin-Rong Cheng.

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Zhang, H., Tong, T., Cao, WH. et al. Enhanced photocatalytic activity of Bi2Fe4O9 catalysts with EDTA modification. J Sol-Gel Sci Technol 75, 481–485 (2015). https://doi.org/10.1007/s10971-015-3751-z

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