Adsorption Mechanism and Electrochemical Properties of Methyl Blue onto Magnetic CoxCu(1–x)Fe2O4 Nanoparticles Prepared via an Alcohol Solution of Nitrate Combustion and Calcination Process
| Autor: | Shaoshuai Zhang, Jiaqian Bi, Ruitong Yin, Jianming Xue, Ruijiang Liu, Yueyang Xu |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Polymers and Plastics Methyl blue Nanoparticle 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences law.invention Dielectric spectroscopy chemistry.chemical_compound Adsorption chemistry Chemical engineering law Specific surface area Materials Chemistry Calcination Cyclic voltammetry 0210 nano-technology High-resolution transmission electron microscopy |
| Zdroj: | Journal of Inorganic and Organometallic Polymers and Materials. 31:3584-3594 |
| ISSN: | 1574-1451 1574-1443 |
| Popis: | Magnetic CoxCu(1–x)Fe2O4 nanoparticles were prepared via an alcohol solution of nitrate combustion and calcination process. Their magnetic properties, microstructure, and element composition were measured by XRD, VSM, SEM, TEM, HRTEM, EDS, BET, and XPS. For larger specific surface area and facile separation from solutions, magnetic Co0.8Cu0.2Fe2O4 nanoparticles calcined at 400 °C for 2 h with 20 mL absolute ethyl alcohol were employed to adsorb methyl blue (MB). The adsorption mechanism was expounded by the intraparticle diffusion model and the Temkin model, which suggested that the adsorption of MB onto Co0.8Cu0.2Fe2O4 nanoparticles was the monolayer-multilayer mixed adsorption mechanism. The adsorption of MB onto Co0.8Cu0.2Fe2O4 nanoparticles kept the high efficiency when the pH of dye solution was equal to or over seven, and the adsorption capacity of Co0.8Cu0.2Fe2O4 nanoparticles remained 57.1% of the original removal effect after five times circulation. Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) were used to characterize the adsorption behavior innovatively. |
| Databáze: | OpenAIRE |
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