| Autor: |
Mahmoud AED; Environmental Sciences Department, Faculty of Science, Alexandria University, Alexandria, 21511, Egypt. alaa-mahmoud@alexu.edu.eg.; Green Technology Group, Faculty of Science, Alexandria University, Alexandria, 21511, Egypt. alaa-mahmoud@alexu.edu.eg., Al-Qahtani KM; Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia., Alflaij SO; Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia., Al-Qahtani SF; Center of Excellence for Advanced Materials and Manufacturing, King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia., Alsamhan FA; Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia. |
| Jazyk: |
angličtina |
| Zdroj: |
Scientific reports [Sci Rep] 2021 Jun 15; Vol. 11 (1), pp. 12547. Date of Electronic Publication: 2021 Jun 15. |
| DOI: |
10.1038/s41598-021-91093-7 |
| Abstrakt: |
Environmentally friendly copper oxide nanoparticles (CuO NPs) were prepared with a green synthesis route without using hazardous chemicals. Hence, the extracts of mint leaves and orange peels were utilized as reducing agents to synthesize CuO NPs-1 and CuO NPs-2, respectively. The synthesized CuO NPs nanoparticles were characterized using scanning electron microscopy (SEM), Energy Dispersive X-ray Analysis (EDX), BET surface area, Ultraviolet-Visible spectroscopy (UV-Vis), and Fourier Transform Infrared Spectroscopy (FT-IR). Various parameters of batch experiments were considered for the removal of Pb(II), Ni(II), and Cd(II) using the CuO NPs such as nanosorbent dose, contact time, pH, and initial metal concentration. The maximum uptake capacity (q m ) of both CuO NPs-1 and CuO NPs-2 followed the order of Pb(II) > Ni(II) > Cd(II). The optimum q m of CuO NPs were 88.80, 54.90, and 15.60 mg g -1 for Pb(II), Ni(II), and Cd(II), respectively and occurred at sorbent dose of 0.33 g L -1 and pH of 6. Furthermore, isotherm and kinetic models were applied to fit the experimental data. Freundlich models (R 2 > 0.97) and pseudo-second-order model (R 2 > 0.96) were fitted well to the experimental data and the equilibrium of metal adsorption occurred within 60 min. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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