School of Chemistry and Materials Science, Hubei Engineering University, Xiaogan, China.
Wuhan Branch, SGS-CSTC Standard Technical Services Co., Ltd, Wuhan, China.
Int J Biol Macromol. 2024 Jan;256(Pt 1):128400. doi: 10.1016/j.ijbiomac.2023.128400. Epub 2023 Nov 23.
Fe/Mn bimetallic carbon materials were synthesized by combining oat and urea, followed by and carbonization processes, the activity and mechanism of the obtained materials in activating peroxymonosulfate (PMS) for sulfamethoxazole (SMX) degradation were determined. Data suggested that the obtained material (CN@FeMn-10-800) showed the optimal performance for SMX degradation under the1:8:0.05:0.05 mass ratios of oat/urea/Fe/Mn. Around 91.2 % SMX (10 mg L) was removed under the conditions of 0.15 g L CN@FeMn-10-800 and 0.20 g L PMS. The CN@FeMn-10-800 showed great adaptability under different conditions, satisfactory activation repeatability and versatility. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) demonstrated that core-shell structure with rich porous of CN@FeMn-10-800 was achieved. Quenching test and electron paramagnetic resonance (EPR) indicated that surface bound oxygen and singlet oxygen (O) were the dominate reactive groups in this system. X-ray photoelectron spectroscopy (XPS) suggested that graphite N, Fe, FeC and Mn(II) were the dominant active sites. Through the work, a simple strategy could be found to make high-value use of biomass and use it to effectively purified wastewater.
Fe/Mn 双金属碳材料是通过结合燕麦和尿素，然后经过碳化过程合成的，研究了所得材料在活化过一硫酸盐（PMS）降解磺胺甲恶唑（SMX）中的活性和机制。数据表明，在燕麦/尿素/Fe/Mn 的质量比为 1:8:0.05:0.05 时，所得材料（CN@FeMn-10-800）在 SMX 降解方面表现出最佳性能。在 0.15 g L CN@FeMn-10-800 和 0.20 g L PMS 的条件下，约有 91.2%的 SMX（10 mg L）被去除。CN@FeMn-10-800 在不同条件下表现出很好的适应性，具有令人满意的可重复使用性和多功能性。扫描电子显微镜（SEM）和透射电子显微镜（TEM）表明，CN@FeMn-10-800 实现了具有丰富多孔的核壳结构。猝灭实验和电子顺磁共振（EPR）表明，表面结合氧和单线态氧（O）是该体系中的主要活性基团。X 射线光电子能谱（XPS）表明，石墨 N、Fe、FeC 和 Mn(II)是主要的活性位点。通过这项工作，可以找到一种简单的策略，充分利用生物质并有效地净化废水。
