Peroxymonosulfate Activation by MnO2/CoMoO4/NF for Degradation of Levofloxacin

IF 3.8 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES Water, Air, & Soil Pollution Pub Date : 2024-10-16 DOI:10.1007/s11270-024-07470-1

Yonglei Xing, Huijuan Liu, Yu Ha, Xiaoyong Jin, Beibei Kou, Rui Yang, Gang Ni

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Abstract

MnO₂/CoMoO₄/ NF (Nickel foam) was obtained by loading MnO₂ onto the surface of CoMoO₄/NF using electrodeposition. The results of degradation experiments showed that the degradation efficiency of levofloxacin (LVF) (15 ppm, pH = 6.12) over MnO₂/CoMoO₄//NF reached 80.4% in 30 min when the PMS concentration was 0.08 mM. When the pH was lower or higher than the pH value of the original solution, the performance of the material significantly decreased due to the repulsive effect between the catalyst and SO₅²⁻. Cobalt and manganese ions exhibited a synergistic effect on the activation of PMS. The HCO₃⁻ ions showed the most significant inhibitory effect on the degradation of LVF. The free radical trapping experiments indicated that ·OH, and O₂^·− were the main active species in the degradation process of levofloxacin. The cyclic stability experiments proved the MnO₂/CoMoO₄/NF catalysts were efficient, stable and easy to recover.

Graphical Abstract

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MnO2/CoMoO4/NF 活化过氧单硫酸盐降解左氧氟沙星

MnO2/CoMoO4/ NF（泡沫镍）是通过电沉积法在 CoMoO4/NF 表面负载 MnO2 而得到的。降解实验结果表明，当 PMS 浓度为 0.08 mM 时，MnO2/CoMoO4/NF 对左氧氟沙星（LVF）（15 ppm，pH = 6.12）的降解效率在 30 分钟内达到 80.4%。当 pH 值低于或高于原溶液的 pH 值时，由于催化剂与 SO52- 之间的排斥效应，材料的性能明显下降。钴离子和锰离子对 PMS 的活化有协同作用。HCO3- 离子对 LVF 降解的抑制作用最为明显。自由基捕获实验表明，-OH 和 O2 是左氧氟沙星降解过程中的主要活性物种。循环稳定性实验证明 MnO2/CoMoO4/NF 催化剂高效、稳定、易回收。

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来源期刊

Water, Air, & Soil Pollution 环境科学-环境科学

CiteScore

4.50

自引率

6.90%

发文量

448

审稿时长

2.6 months

期刊介绍： Water, Air, & Soil Pollution is an international, interdisciplinary journal on all aspects of pollution and solutions to pollution in the biosphere. This includes chemical, physical and biological processes affecting flora, fauna, water, air and soil in relation to environmental pollution. Because of its scope, the subject areas are diverse and include all aspects of pollution sources, transport, deposition, accumulation, acid precipitation, atmospheric pollution, metals, aquatic pollution including marine pollution and ground water, waste water, pesticides, soil pollution, sewage, sediment pollution, forestry pollution, effects of pollutants on humans, vegetation, fish, aquatic species, micro-organisms, and animals, environmental and molecular toxicology applied to pollution research, biosensors, global and climate change, ecological implications of pollution and pollution models. Water, Air, & Soil Pollution also publishes manuscripts on novel methods used in the study of environmental pollutants, environmental toxicology, environmental biology, novel environmental engineering related to pollution, biodiversity as influenced by pollution, novel environmental biotechnology as applied to pollution (e.g. bioremediation), environmental modelling and biorestoration of polluted environments. Articles should not be submitted that are of local interest only and do not advance international knowledge in environmental pollution and solutions to pollution. Articles that simply replicate known knowledge or techniques while researching a local pollution problem will normally be rejected without review. Submitted articles must have up-to-date references, employ the correct experimental replication and statistical analysis, where needed and contain a significant contribution to new knowledge. The publishing and editorial team sincerely appreciate your cooperation. Water, Air, & Soil Pollution publishes research papers; review articles; mini-reviews; and book reviews.