数字农科院2.0

Preparation Of Magnetic Fe3O4/Mil-88A Nanocomposite A.nd Its Adsorption Properties F or Bromophenol Blue Dye In Aqueous Solution

文献类型： 外文期刊

作者： Liu, Y; Huang, YM; Xiao, AP; Qiu, HJ; Liu, LL

作者机构：

关键词： adsorption; bromophenol blue; magnetic nanoparticles; metal-organic frameworks; wastewater

期刊名称： NANOMATERIALS

ISSN： 2079-4991

年卷期： 2019 年 9 卷 1 期

页码：

收录情况： JCR（2021版）

摘要： Metal-organic frameworks (MOFs) are considered as good materials for the adsorption of many environmental pollutants. In this study, magnetic Fe3O4/MIL-88A composite was prepared by modification of MIL-88A with magnetic nanoparticles using the coprecipitation method. The structures and magnetic property of magnetic Fe3O4/MIL-88A composite were characterized and the adsorption behavior and mechanism for Bromophenol Blue (BPB) were evaluated. The results showed that magnetic Fe3O4/MIL-88A composite maintained a hexagonal rod-like structure and has good magnetic responsibility for magnetic separation (the maximum saturation magnetization was 49.8 emu/g). Moreover, the maximum adsorption amount of Fe3O4/MIL-88A composite for BPB was 167.2 mg/g and could maintain 94% of the initial adsorption amount after five cycles. The pseudo-second order kinetics and Langmuir isotherm models mostly fitted to the adsorption for BPB suggesting that chemisorption is the rate-limiting step for this monomolecular-layer adsorption. The adsorption capacity for another eight dyes (Bromocresol Green, Brilliant Green, Brilliant Crocein, Amaranth, Fuchsin Basic, Safranine T, Malachite Green and Methyl Red) were also conducted and the magnetic Fe3O4/MIL-88A composite showed good adsorption for dyes with sulfonyl groups. In conclusion, magnetic Fe3O4/MIL-88A composite could be a promising adsorbent and shows great potential for the removal of anionic dyes containing sulfonyl groups.

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