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<p>Composites of MIL-101(Fe)/CoFe<sub>2</sub>O<sub>4</sub> were prepared by a simple solvothermal approach and these composites were explored for tetracycline (TC) degradation by using light and persulfate (PS). MIL-101(Fe)/CoFe<sub>2</sub>O<sub>4</sub> catalyst showed superior catalytic performance when combined with photocatalysis and chemical catalysis. Experimental results suggest that the degradation efficiency reached 83% within 40&#xa0;min. The TC adsorption ability of MIL-101(Fe)/CoFe<sub>2</sub>O<sub>4</sub> was tightly associated with pH, which can be interpreted through isoelectric point. Oxygen-active species, containing singlet oxygen (<sup>1</sup>O<sub>2</sub>) or superoxide radicals (O· 2‾), were also generated when there was dissolved oxygen, which could decompose the TC organic contaminant in solution. To be specific, MIL-101(Fe)/CoFe<sub>2</sub>O<sub>4</sub>/PS/Vis catalytic system was capable of eliminating TC through forming h<sup>+</sup>, <sup>1</sup>O<sub>2</sub>, O· 2‾, hydroxyl radicals (·OH) and sulfate radicals (·SO<sub>4</sub>‾) species. Moreover, MIL-101(Fe)/CoFe<sub>2</sub>O<sub>4</sub> composite material showed outstanding stability.</p>

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Degradation of tetracycline by MIL-101(Fe)/CoFe2O4 activated persulfate under visible light

  • 期刊论文

  • 发表日期：

    2025年2月17日

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  • Guofen Rui,
  • Zihao Hu,
  • Huiqi Wu,
  • Jianfeng Ma

摘要

Composites of MIL-101(Fe)/CoFe2O4 were prepared by a simple solvothermal approach and these composites were explored for tetracycline (TC) degradation by using light and persulfate (PS). MIL-101(Fe)/CoFe2O4 catalyst showed superior catalytic performance when combined with photocatalysis and chemical catalysis. Experimental results suggest that the degradation efficiency reached 83% within 40 min. The TC adsorption ability of MIL-101(Fe)/CoFe2O4 was tightly associated with pH, which can be interpreted through isoelectric point. Oxygen-active species, containing singlet oxygen (1O2) or superoxide radicals (O· 2‾), were also generated when there was dissolved oxygen, which could decompose the TC organic contaminant in solution. To be specific, MIL-101(Fe)/CoFe2O4/PS/Vis catalytic system was capable of eliminating TC through forming h+, 1O2, O· 2‾, hydroxyl radicals (·OH) and sulfate radicals (·SO4‾) species. Moreover, MIL-101(Fe)/CoFe2O4 composite material showed outstanding stability.