A novel adsorbent based on magnetic Fe3O4 contained polyvinyl alcohol/chitosan composite nanofibers for chromium (VI) removal

被引：28

作者：

Yan, Eryun ^{[1
]}

Cao, Minglu ^{[1
]}

Jiang, Jinyu ^{[1
]}

Gao, Jianwei ^{[2
]}

Jiang, Congcheng ^{[3
]}

Ba, Xuewei ^{[1
]}

Yang, Xiuying ^{[1
]}

Zhang, Deqing ^{[1
]}

机构：

[1] Qiqihar Univ, Coll Mat Sci & Engn, Qiqihar 161006, Peoples R China

[2] Qiqihar Univ, Coll Food & Biol Engn, Qiqihar 161006, Peoples R China

[3] Sinoma Blade Beijing Branch, Beijing 102101, Peoples R China

来源：

SOLID STATE SCIENCES | 2017年 / 72卷

关键词：

Fe3O4; Electrospinning; Composite nanofibers; Adsorbent; Chromium removal; ADSORPTION; REDUCTION; NANOPARTICLES; PERFORMANCE; HUMANS; CR(VI); SHELL;

D O I：

10.1016/j.solidstatesciences.2017.08.014

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The magnetic Fe3O4 contained polyvinyl alcohol/chitosan (Fe3O4@PVA/CS) composite nanofibers were successfully synthesized via the electrospinning method and characterized by scanning electron microscope (SEM), transmission electron microscope (TEM), vibrating sample magnetometer (VSM) and Fourier transform infrared (FT-IR). The composite nanofibers were used as a novel adsorbent for removing toxic chromium (VI) (Cr-VI) in aqueous solution. The doping of Fe3O4 nanoparticles (NPs) into the fibers had a positive effect on the absorption for Cr-VI ions both under neutral and acidic conditions, and the saturated adsorption reached the highest when pH was 3.0. The results of the kinetics of Cr-VI removal on the as-prepared Fe3O4@PVA/CS composite nanofibers suggested a rapid initial loading and a subsequent stable stage, and the adsorption was well described by the pseudo-first-order model. The possible Cr-VI removal mechanism of the magnetic Fe3O4@PVA/CS composite nanofibers was also proposed. (C) 2017 Elsevier Masson SAS. All rights reserved.

引用

页码：94 / 102

页数：9

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