Abstract The present work reported the pertinence of samarium (Sm) doped spinel nanoferrites as magnetically recoverable photocatalyst for the removal of organic pollutants from wastewater. Thus, a series of Sm substituted spinel nanoferrites, MSmxFe2–xO4 (M = Ni, Co; x = 0, 0.02, 0.06, 0.1) were synthesized via sol-gel methodology. The systematic effect of Sm doping on the structural, morphological, optical and magnetic properties of pristine nanoferrites was investigated. Further, the fabricated samples were explored as photocatalysts for the oxidative degradation of antibiotics (ofloxacin and norfloxacin) and dyes (methyl orange and safranin O). The Sm doped nanoferrites exhibited astonishing catalytic efficacy that could be attributed to higher surface area, octahedral site preference of Sm ions and reduced band gap. The synthesized nanoferrites displayed excellent recyclability which enabled them to be utilized as potential photocatalysts for wastewater treatment.

中文翻译：

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穿越钐掺杂尖晶石纳米铁氧体光催化去除有机污染物的有利作用

摘要 目前的工作报告了钐 (Sm) 掺杂尖晶石纳米铁氧体作为磁性可回收光催化剂用于去除废水中的有机污染物的相关性。因此，通过溶胶-凝胶方法合成了一系列 Sm 取代的尖晶石纳米铁氧体 MSmxFe2–xO4（M = Ni、Co；x = 0、0.02、0.06、0.1）。研究了 Sm 掺杂对原始纳米铁氧体的结构、形态、光学和磁性能的系统影响。此外，将制造的样品作为光催化剂用于抗生素（氧氟沙星和诺氟沙星）和染料（甲基橙和番红 O）的氧化降解。Sm 掺杂的纳米铁氧体表现出惊人的催化功效，这可能归因于更高的表面积、Sm 离子的八面体位点偏好和减小的带隙。