期刊
CHEMOSPHERE
卷 294, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2022.133736
关键词
Degradation; FeNi-LDH; Tetracycline; Wastewater treatment; Photo-Fenton; Ti3C2
资金
- Program for the National Natural Science Foundation of China [51779090, 52170161, 51521006]
- National Program for Support of Top-Notch Young Professionals of China (2014)
- Program for Changjiang Scholars and Innovative Research Team in University [IRT-13R17]
- Hunan Natural Science Foundation [2020JJ3009]
- Hunan Researcher Award Program [2020RC3025]
- Hunan Provincial Science and Technology Plan Project [2017SK2243, 2018SK20410, 2016RS3026]
- Fundamental Research Funds for the Central Universities [531118010247, 531118040083]
In this study, a FeNi-LDH/Ti3C2 photo-Fenton system was constructed, which solved the problems of FeNi-LDH and showed excellent tetracycline removal efficiency and pH tolerance, indicating its potential for practical applications.
Recently, photo-Fenton technology has been widely used to degrade tetracycline (TC) because of its great efficiency and wide application range. Herein, Fe-Ni layered double hydroxides (FeNi-LDH)/Ti3C2 photo-Fenton system was constructed in this study. The results showed the introduction of Ti3C2 solved some problems of FeNi-LDH such as poor conductivity, easy aggregation, and high recombination rate of photoelectron. Benefiting from these advantages, FeNi-LDH/Ti3C2 exhibited excellent TC removal rate of 94.7% while pure FeNi-LDH was only 54%. Besides, FeNi-LDH/Ti3C2 possessed strong pH tolerance (2-11) and the removal efficiency was still up to 82% after the four-cycle experiment. Furthermore, the quenching experiments revealed the reaction mechanism, where .OH and .O2xe213; were the primary active radicals for degrading TC. Last, the results of the simulated wastewater treatment and the inorganic ion interference tests showed that FeNi-LDH/Ti3C2 possessed practical application potential. In brief, this study shows that FeNi-LDH/Ti3C2 can offer a certain theoretical basis for the actual development of hydrotalcite in heterogeneous photo-Fenton systems.
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