select ad.sno,ad.journal,ad.title,ad.author_names,ad.abstract,ad.abstractlink,j.j_name,vi.* from articles_data ad left join journals j on j.journal=ad.journal left join vol_issues vi on vi.issue_id_en=ad.issue_id where ad.sno_en='57695' and ad.lang_id='6' and j.lang_id='6' and vi.lang_id='6' Electrospinning of polyacrylonitrile nanofibers embedded wit | 57695
医薬品分析化学: オープンアクセス

医薬品分析化学: オープンアクセス
オープンアクセス

ISSN: 2471-2698

概要

Electrospinning of polyacrylonitrile nanofibers embedded with zero-valent iron and cerium oxide nanoparticles, as Cr (VI) adsorbents for water treatment

Edna Vazquez-Velez

Zero-valent 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

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