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| Preparation and Adsorption of 2-Nitro-1,3-benzenediol of Fe3O4/GO/PPy Composite |
| Author Name | Affiliation | E-mail | | LEI Li-Ling | Zhengzhou Institute of Light Industry, Zhengzhou 450000, China | | | YANG Qing-Xiang | Zhengzhou Institute of Light Industry, Zhengzhou 450000, China | | | ZHAO Jun-Hong | Zhengzhou Institute of Light Industry, Zhengzhou 450000, China | | | ZHANG Yan | Zhengzhou Institute of Light Industry, Zhengzhou 450000, China | | | JIA Chao-Yang | Zhengzhou Institute of Light Industry, Zhengzhou 450000, China | | | LU Ran | Zhengzhou Institute of Light Industry, Zhengzhou 450000, China | | | NIE Li-Min | Zhengzhou Institute of Light Industry, Zhengzhou 450000, China | | | CHEN Zhi-Jun | Zhengzhou Institute of Light Industry, Zhengzhou 450000, China | mcchenzj@zzuli.edu.cn |
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| Abstract: In order to improve the ability to remove 2-nitro-1,3-benzenediol (NRC) in water, Fe3O4/GO/PPy ternary composites were prepared by hydrothermal method using GO prepared by modified Hummers method. UV-visible absorption spectroscopy (UV-Vis), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), ζ potential analysis to study the structural of magnetic nanocomposites, while the pH value of the solution, the amount of adsorbent, initial concentration, adsorption time and temperature on the adsorption of NRC were studied by adsorption kinetics and adsorption isotherms. The results showed that the prepared Fe3O4/GO/PPy composites were layered dispersed structure; GO layer structure was stripped; PPy and Fe3O4 particles irregularly interspersed among the GO sheets. Fe3O4 particles were the polyhedral crystal structure with polyhedral size in the range of 100~300 nm. The interface between Fe3O4 and PPy particles in the graphene sheet layer was in close contact with each other; Fe3O4/GO/PPy could easily separated in water because of the superparamagnetism. Fe3O4/GO/PPy could be separated with 40 s under external magnetic field and the removal ratio of the NRC was 91.6%. The adsorption property of Fe3O4/GO/PPy for NRC obtained the strongest adsorption under the NRC initial concentration (C0) was 200 mg·L-1, pH value was 5.00±0.05, tempreture (T) was 318.15 K, adsorbent dosage (m) was 10 mg·L-1 and time (t) was 6 h, and the adsorption amount reached 163.3 mg·g-1. The adsorption kinetics of NRC follows the second-order kinetic model, and the adsorption isotherm conforms to the Langmuir model. After using NRC for five times, the removal rate decreased from 91.6% to 77.6%, that illustrated Fe3O4/GO/PPy magnetic complex possessed good stability and repeated use ability. |
| Keywords: adsorption organic-inorganic hybrid composites graphene 2-nitro-1,3-benzenediol |
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| LEI Li-Ling,YANG Qing-Xiang,ZHAO Jun-Hong,ZHANG Yan,JIA Chao-Yang,LU Ran,NIE Li-Min,CHEN Zhi-Jun.Preparation and Adsorption of 2-Nitro-1,3-benzenediol of Fe3O4/GO/PPy Composite[J].Chinese Journal of Inorganic Chemistry,2019,35(4):658-666. |
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