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Iranian Journal of Chemistry and Chemical Engineering، جلد ۴۱، شماره ۱، صفحات ۱-۱۴
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عنوان انگلیسی Green Synthesis of Copper Nanoparticles using Centaurea cyanus Plant Extract: A Cationic Dye Adsorption Application
چکیده انگلیسی مقاله In this study, copper nanoparticles (Cu-NPs) were synthesized through green and economic techniques. The Centaurea cyanus plant extract was used as an appropriate reducing and stabilizing agent in this process. The synthesized nanoparticles were characterized by Fourier-Transform InfraRed (FT-IR) spectroscopy, X-Ray powder Diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM), Transmission Electron Microscopy (TEM), and N2 adsorption porosimetry analysis. The analysis showed that the average size of spherical nanoparticles was around 11.9 nm, with 74.2 m2/g and 0.36 cm3/g mane surface area and pore size, respectively. Then, Cu-NPs were studied as a low-cost adsorbent to remove Methylene Blue (MB) dye from aqueous solutions. For this purpose, Central Composite Design (CCD) under the Response Surface Methodology (RSM) was applied to design the experiments, model the data, and optimize the operating conditions. The effect of various operating parameters such as pH, MB initial concentration, adsorbent amount, and contact time on the MB removal was practiced. Analysis of variance (ANOVA) showed a good agreement between the experimental data and the predicted ones obtained from the quadratic model. The optimum conditions for MB removal (63.20 %) were found at pH of 6.6, MB initial concentration of 30 mg/L, adsorbent amount of 0.15 g, and time of 101.5 min. The results showed that the Langmuir isotherm with a maximum adoption capacity of 21.9 mg/g and pseudo-second-order kinetic models with a rate constant of 0.359 (g/mg) (1/min) can properly legitimize the experimental data.
کلیدواژه‌های انگلیسی مقاله Green synthesis,Centaurea cyanus,Copper nanoparticles,Adsorption,Optimization
نویسندگان مقاله Reza Davarnejad |
Department of Chemical Engineering, Faculty of Engineering, Arak University, Arak, I.R. IRAN

Amir Azizi |
Department of Chemistry, Faculty of Science, Arak University, Arak, I.R. IRAN

Sajjad Asadi |
Department of Chemical Engineering, Faculty of Engineering, Arak University, Arak, I.R. IRAN

Maryam Mohammadi |
Department of Chemical Engineering, Faculty of Engineering, Arak University, Arak, I.R. IRAN

نشانی اینترنتی https://ijcce.ac.ir/article_45014_1ee569869306a0ec6ac39205906fe41f.pdf
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