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首页> 外文期刊>RSC Advances >Fabrication of hydrochar functionalized Fe–Mn binary oxide nanocomposites: characterization and 17β-estradiol removal
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Fabrication of hydrochar functionalized Fe–Mn binary oxide nanocomposites: characterization and 17β-estradiol removal

机译：碳氢官能化的Fe-Mn二元氧化物纳米复合材料的制备：表征和17β-雌二醇的去除

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In this work, Fe–Mn binary oxide modified hydrochar (hydrochar-FMBO) was successfully prepared by deposition of Fe–Mn binary oxide (FMBO) nanoparticles on pristine hydrochar. The as-prepared sample was characterized for its physicochemical properties and employed as an adsorbent for 17β-estradiol (E2) removal from water. The characterization results indicated that nano-sized FMBO particles deposited on the hydrochar matrix. For bath experiments, hydrochar-FMBO showed an excellent E2 adsorption capacity (49.77 mg g?1), which was much higher than the known reported-adsorbents. The adsorption kinetic studies demonstrated that the adsorption of E2 on hydrochar-FMBO was well fitted by the pseudo-second-order kinetic model. Besides, adsorption of E2 on hydrochar-FMBO was a rather complex process involving intraparticle diffusion. In addition, the exhausted hydrochar-FMBO could be regenerated and restored to 83% of its initial capacity in the fifth cycle. Relative mechanistic analyses for the adsorption processes were also provided in this article. These results demonstrated that the modified hydrochar could be efficiently utilized as a high-performance sustainable material for organic contaminants removal.
机译：在这项工作中，通过将Fe-Mn二元氧化物（FMBO）纳米粒子沉积在原始水状炭上，成功制备了Fe-Mn二元氧化物改性的炭（hydrochar-FMBO）。所制备的样品对其理化性质进行表征，并用作从水中去除17β-雌二醇（E2）的吸附剂。表征结果表明，纳米级FMBO颗粒沉积在水煤基质上。对于浴实验，hydrochar-FMBO表现出优异的E2吸附容量（49.77 mg g ？1 ），远高于已知的吸附剂。吸附动力学研究表明，伪二级动力学模型很好地拟合了E2在水焦-FMBO上的吸附。此外，E2在水焦-FMBO上的吸附是一个相当复杂的过程，涉及颗粒内扩散。此外，在第五个循环中，用尽的碳氢化合物-FMBO可以再生并恢复至其初始容量的83％。本文还提供了吸附过程的相对机理分析。这些结果证明，改性的水炭可以有效地用作高性能的可持续材料，用于去除有机污染物。

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