Ultraviolet Light Assisted Hierarchical Porous Fe2O3 Catalyzing Heterogeneous Fenton Degradation of Tetracycline Under Neutral Condition with a Low Requirement of H2O2

doi:10.1007/s40242-019-8238-y

Chemical Research in Chinese Universities ›› 2019, Vol. 35 ›› Issue (2): 304-310.doi: 10.1007/s40242-019-8238-y

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Ultraviolet Light Assisted Hierarchical Porous Fe₂O₃ Catalyzing Heterogeneous Fenton Degradation of Tetracycline Under Neutral Condition with a Low Requirement of H₂O₂

LIN Xinchen¹, XIE Feng¹, YU Xiaodan², TANG Xin¹, GUAN Heda¹, CHEN Yu¹, FENG Wei¹

1. Key Laboratory of Groundwater Resource and Environment, Ministry of Education, College of New Energy and Environment, Jilin University, Changchun 130021, P. R. China;
2. School of Environment, Harbin Institute of Technology, Harbin 150090, P. R. China

Received:2018-07-24 Revised:2018-12-14 Online:2019-04-01 Published:2019-04-30
Contact: FENG Wei E-mail:weifeng@jlu.edu.cn
Supported by:
Supported by the National Natural Science Foundation of China(No.6177030724).

Abstract

Abstract: The hierarchical porous Fe₂O₃ particles as a novel ultraviolet light assisted heterogeneous Fenton catalysts were synthesized by bio-template synthesis method using iron nitrate as precursor at high temperature of around 550℃. The hierarchical porous structured Fe₂O₃ was endowed with a large surface area and abundant pore volume, leading to the exposure of more active sites and rapid mass transfer. The synergistic effect of UV irradiation and hierarchical porous Fe₂O₃ improved the photo-degradation efficiency of Tetracycline(TC). The degradation efficiency of Fe₂O₃ catalyzing UV-Fenton system reached 97.4% after 60 min reaction, which was more substantial than Fe₂O₃ catalyzing Fenton system(7.6%) and UV/H₂O₂ system(59.2%). Moreover, the hierarchical porous Fe₂O₃ catalyzing UV-Fenton system exhibited an extremely wide pH range(from 3.0 to 9.0, from mildly acidic to slightly alkaline) for efficient degradation of TC. Simultaneously, the extraordinary higher degradation efficiency was based on 10 mmol/L H₂O₂ concentration, which was low requirement for H₂O₂. Further, the hierarchical porous Fe₂O₃ can be used for five consecutive cycles with over 95% of the original degradation efficiency. Ultraviolet light assisted heterogeneous Fenton reaction in the hierarchical porous Fe₂O₃ improved the ·OH and O₂^·- production and Fe(Ⅲ)/Fe(Ⅱ) redox cycle, which consequently achieved an excellent degradation rate.

Key words: Heterogeneous Fenton, Hierarchical porous Fe₂O₃, Biological template method, Tetracycline degradation

LIN Xinchen, XIE Feng, YU Xiaodan, TANG Xin, GUAN Heda, CHEN Yu, FENG Wei. Ultraviolet Light Assisted Hierarchical Porous Fe₂O₃ Catalyzing Heterogeneous Fenton Degradation of Tetracycline Under Neutral Condition with a Low Requirement of H₂O₂[J]. Chemical Research in Chinese Universities, 2019, 35(2): 304-310.

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Ultraviolet Light Assisted Hierarchical Porous Fe₂O₃ Catalyzing Heterogeneous Fenton Degradation of Tetracycline Under Neutral Condition with a Low Requirement of H₂O₂

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