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首页> 外文期刊>Journal of Applied Polymer Science >Electrospinning of polyacrylonitrile nanofibers embedded with zerovalent iron and cerium oxide nanoparticles, as Cr(VI) adsorbents for water treatment
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Electrospinning of polyacrylonitrile nanofibers embedded with zerovalent iron and cerium oxide nanoparticles, as Cr(VI) adsorbents for water treatment

机译：嵌入氮价铁和氧化铈纳米粒子的聚丙烯腈纳米纤维的静电纺丝，作为水处理的Cr（VI）吸附剂

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摘要

Zerovalent iron (ZVI) and cerium oxide (CeO2) nanoparticles (NPs) embedded in polyacrylonitrile nanofibers (NFs) were obtained via electrospinning. Each NF was characterized using Fourier transform infrared spectroscopy and X-ray diffraction. The scaffold morphology and average diameter of the NFs were determined using scanning electron microscopy (SEM). Energy dispersive X-ray spectroscopy (EDS) mapping and Raman spectroscopy were used to characterize the NPs dispersion in the NFs. The Cr(VI) removal efficiency (%E) of ZVI and CeO2 NPs was compared with the efficiency of their corresponding NFs. CeO2 NPs showed 79% Cr(VI) removal; the efficiency was better for their NFs (96%). Regeneration of ZVI NFs was 98 %E. ZVI NPs were the best adsorbent with 99.9% efficiency. An adsorption mechanism was proposed using Langmuir, Freundlich, and Temkin isotherm models. SEM-EDS analyses revealed that Cr adsorbed on the NP and NF surfaces. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 137, 48663.
机译：通过静电纺丝得到填充在聚丙烯腈纳米纤维（NFS）中的Zerovalent铁（ZVI）和氧化铈（CeO 2）纳米颗粒（NPS）。每个NF使用傅里叶变换红外光谱和X射线衍射表征。使用扫描电子显微镜（SEM）测定NFS的支架形态和平均直径。能量分散X射线光谱（EDS）映射和拉曼光谱法用于表征NFS中的NPS分散体。将ZVI和CeO2 NP的Cr（VI）去除效率（％e）与相应的NFS的效率进行比较。 CEO2 NPS显示出79％CR（VI）删除;效率对他们的NFS（96％）更好。 ZVI NFS的再生为98％E. ZVI NPS是最佳吸附剂，效率为99.9％。使用Langmuir，Freundlich和Temkin等温线模型提出了一种吸附机制。 SEM-EDS分析显示CR吸附在NP和NF表面上。 （c）2019 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2019,137,48663。

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