In present work, we studied a novel Fe/C nanomaterial fabricated using Fe-based metal organic frameworks (MOFs) as precursors through thermal pyrolysis to catalyze gamma irradiation-induced degradation of antibiotics, cephalosporin C (CEP-C) and sulfamethazine (SMT) in aqueous solution. The MOFs-derived Fe/C nanomaterials (DMOFs) had the regular octahedrons structure of MOFs and contained element C, Fe and O, while Fe° with a fraction of Fe3O4 and Fe2O3 were identified. Results showed that DMOFs addition could accelerate the generation of OH during gamma irradiation, while the intermediates of bonds cleavages of antibiotic molecules and OH addition were identified. DMOFs were more effective to improve the decomposition of antibiotic having the higher adsorption capacity like SMT. The degradation rate of CEP-C and SMT increased by 1.3 times and 1.8 times, and TOC reduction at 1.0 kGy reached 42 % and 51 %, respectively by gamma/DMOFs treatment, while only 20.2 % (CEP-C) and 4.5 % (SMT) of TOC reduction were obtained by γ-irradiation alone. The crystal structure, functional groups and magnetism of DMOFs changed slightly after gamma irradiation, which made it possible to be reused. DMOFs were promising to enhance the degradation of antibiotics during gamma irradiation.

中文翻译：

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使用源自铁基MOF的Fe / C纳米材料增强电离辐射诱导的抗生素催化降解。

在目前的工作中，我们研究了一种以铁基金属有机骨架（MOFs）为前体通过热裂解制备的新型Fe / C纳米材料，以催化γ射线诱导的抗生素，头孢菌素C（CEP-C）和磺胺二甲嘧啶（SMT）降解。在水溶液中。来自MOF的Fe / C纳米材料（DMOF）具有MOF的规则八面体结构，并包含元素C，Fe和O，同时鉴定出Fe3O4和Fe2O3含量较低的Fe°。结果表明，添加DMOFs可以加速γ射线辐照过程中OH的生成，同时鉴定了抗生素分子键裂解和OH添加的中间产物。DMOF更有效地改善了SMT等具有较高吸附能力的抗生素的分解。CEP-C和SMT的降解率分别提高了1.3倍和1。通过γ/ DMOF处理，TOC降低了8倍，在1.0 kGy下的TOC降低分别达到42％和51％，而仅通过γ辐照仅获得了TOC降低的20.2％（CEP-C）和4.5％（SMT）。γ射线辐照后，DMOF的晶体结构，官能团和磁性发生了微小变化，从而可以重复使用。DMOF有希望在伽马射线照射期间增强抗生素的降解。