In this work, cost-effective peroxymonosulfate (PMS) was used as oxidants and magnetic cobalt ferrite biochar composite was used as catalyst to remove lomefloxacin hydrochloride (LFH), a new pollutant in water. PMS activation by CoFe₂O₄ was promoted by compositing with biochar. The MBC/CoFe₂O₄/PMS system degraded 86.9% of LFH in 20 min. MBC/CoFe₂O₄ measured by vibrating sample magnetometer (VSM) had good magnetic properties and was convenient for separation and recovery. Furthermore, the main active oxide species were determined by EPR measurement. The catalytic mechanism of MBC/CoFe₂O₄/PMS system was attributed to the generation of sulfate radicals (SO₄^∙-), hydroxyl radicals (∙OH), singlet oxygen (¹O₂) and superoxide radicals (∙O₂^–) additionally, of which SO₄^∙- played the leading role. Moreover, a possible degradation pathway of LFH was proposed. MBC/CoFe₂O₄/PMS system still had 85.7% LFH removal efficiency after five times of reuse. Thence, the MBC/CoFe₂O₄ composite material might be a candidate for removing difficult pollutants in environmental remediation.

在这项工作中，使用具有成本效益的过氧一硫酸盐（PMS）作为氧化剂，并使用磁性钴铁氧体生物炭复合物作为催化剂来去除水中的洛美沙星盐酸盐（LFH）（一种新的污染物）。通过与生物炭复合促进了CoFe ₂ O _4对PMS的活化。MBC / CoFe ₂ O ₄ / PMS系统在20分钟内降解了LFH的86.9％。振动样品磁力计（VSM）测量的MBC / CoFe ₂ O ₄具有良好的磁性，便于分离和回收。此外，通过EPR测量来确定主要的活性氧化物种类。MBC / CoFe ₂ O ₄的催化机理/ PMS系统归因于另外产生了硫酸根（SO ₄ ^∙-），羟基（∙OH），单线态氧（¹ O ₂）和超氧自由基（∙O ₂ ^–），其中SO ₄ ^∙-发挥了作用领导角色。此外，提出了一种可能的LFH降解途径。在重复使用五次后，MBC / CoFe ₂ O ₄ / PMS系统的LFH去除率仍然为85.7％。因此，MBC / CoFe ₂ O ₄复合材料可能是去除环境修复中难处理污染物的候选材料。