التفاصيل البيبلوغرافية
| العنوان: |
Synthesis and characterization of polymetallic Fe-Co-Ni-S nanocomposite displaying high adsorption capacity for Rhodamine B dye. |
| المؤلفون: |
Bai Sun, Fengshou Zhao, Yunming Cheng, Chenxu Shao, Menghao Sun, Mingjian Yi, Yun Wang, Xiangxiang Wang, Shuguang Zhu, Xinli Cai |
| المصدر: |
Desalination & Water Treatment; Aug2023, Vol. 303, p200-211, 12p |
| مصطلحات موضوعية: |
ADSORPTION capacity, RHODAMINE B, ORGANIC dyes, ADSORPTION kinetics, ENDOTHERMIC reactions, LANGMUIR isotherms, NANOCOMPOSITE materials |
| مستخلص: |
Fe-Co-Ni-S (FCNS) nanocomposite is prepared through a hydrothermal method as a new efficient adsorbent to remove organic dyes in wastewater. The morphology, elemental composition and crystalline structure of the adsorbents have been studied by scanning electron microscopy, energy-dispersive X-ray spectroscopy and X-ray diffraction. The influence of the dosage of adsorbent and the pH value on the adsorption performance, the reusability of the nanocomposite, and effects of different anions are studied, which show that the adsorption rate of FCNS towards Rhodamine B (RhB) is as high as 99.63%. The adsorption kinetics of RhB on FCNS is described to pseudo-second- order model. At 318 K, the saturated adsorption capacity is 581.4 mg/g, which is consistent with the Langmuir isotherm. The kinetic results indicate that the adsorption process involves three steps, among which chemical adsorption and intraparticle diffusion play important roles. In addition, through the thermodynamic fitting of the adsorption process, it indicates that the adsorption of RhB by FCNS is spontaneous and accompanied by endothermic reaction. The FCNS nanocomposites has good adsorption performance under pH values ranging from 3 to 11. The FCNS has good reusability and adsorption performance after being reused 5 times. The Fourier-transform infrared spectrum indicates that hydrogen bonding is one of the main factors for influencing the adsorption. Compared with monometallic or bimetallic sulfides, the composite presented here has better adsorption performance and higher adsorption capacity, which will inspire some other emerging trimetallic sulfide composites for various advanced applications. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
