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The innovation and development of water purification methods have been at the center of extensive research for several decades. Many nanoparticles are frequently seen in industrial waste water. In this research, zinc oxide nanoparticles (ZnO) were synthesized following an autocombustion method with and without honey capping. Structural crystallinity and bonding structure were examined via X-ray diffraction (XRD) analysis and Fourier transform infrared (FTIR) spectroscopy. Optical behavior was analyzed using ultraviolet–visible (UV–Vis) spectroscopy and photoluminescence (PL). Size estimation and surface morphology were studied using scanning electron microscopy (SEM), while energy-dispersive spectroscopy (EDS) was performed to analyze the sample purity and elemental composition. The photocatalytic degradation of methylene blue (MB) by ZnO was assessed as it is an efficient water treatment process with high potential. The biological activity of ZnO nanoparticles was also investigated in terms of antibacterial and antifungal activities against different bacterial and fungal species. Surprisingly, the as-synthesized ZnO nanoparticles were found to be substantially bioactive compared to conventional drugs. Honey-mediated nanoparticles displayed 86% dye degradation efficiency, and that of bare ZnO was 60%. Therefore, the involvement of honey in the synthesis of ZnO nanoparticles has great potential due to its dual applicability in both biological and environmental remediation processes.
M. Sharmila; R. Jothi Mani; Abdul Kader; Awais Ahmad; Gaber E. Eldesoky; Adel E. M. Yahya; Aboud Ahmed Awadh Bahajjaj. Photocatalytic and Biological Activity of ZnO Nanoparticles Using Honey. Coatings 2021, 11, 1046 .
AMA StyleM. Sharmila, R. Jothi Mani, Abdul Kader, Awais Ahmad, Gaber E. Eldesoky, Adel E. M. Yahya, Aboud Ahmed Awadh Bahajjaj. Photocatalytic and Biological Activity of ZnO Nanoparticles Using Honey. Coatings. 2021; 11 (9):1046.
Chicago/Turabian StyleM. Sharmila; R. Jothi Mani; Abdul Kader; Awais Ahmad; Gaber E. Eldesoky; Adel E. M. Yahya; Aboud Ahmed Awadh Bahajjaj. 2021. "Photocatalytic and Biological Activity of ZnO Nanoparticles Using Honey." Coatings 11, no. 9: 1046.
In this work, the widely-abundant, cheap, wild plant Lavandula pubescens Decne was evaluated as an adsorbent for removing Pb(II) ions from wastewater. The chemical composition of the plant was partially isolated and characterized by the corresponding techniques, including gas chromatography–mass spectrometry, gas liquid chromatography, and FTIR spectroscopy. The adsorption capacity of the dried plant material for Pb(II) ions increased with increasing contact time, initial ion concentration, and temperature, while it decreased with increasing adsorbent dosage. The optimum condition for Pb(II) adsorption was determined as 550 mg/L initial metal concentration, pH ≤ 7, and 90 min of contact. The best fit for Pb(II) adsorption isotherms was the linear form of the Freundlich model; however, the maximum capacity indicated by Langmuir was 91.32 mg/g. The experimental data fit better the pseudo-second-order kinetic model (R2 = 0.969), suggesting chemisorption process. Thermodynamic data revealed an endothermic, nonspontaneous, and adsorption process favored at higher concentrations.
Ali Q. Alorabi; Fahad A. Alharthi; Mohamed Azizi; Nabil Al-Zaqri; Adel El-Marghany; Khaled A. Abdelshafeek. Removal of Lead(II) from Synthetic Wastewater by Lavandula pubescens Decne Biosorbent: Insight into Composition–Adsorption Relationship. Applied Sciences 2020, 10, 7450 .
AMA StyleAli Q. Alorabi, Fahad A. Alharthi, Mohamed Azizi, Nabil Al-Zaqri, Adel El-Marghany, Khaled A. Abdelshafeek. Removal of Lead(II) from Synthetic Wastewater by Lavandula pubescens Decne Biosorbent: Insight into Composition–Adsorption Relationship. Applied Sciences. 2020; 10 (21):7450.
Chicago/Turabian StyleAli Q. Alorabi; Fahad A. Alharthi; Mohamed Azizi; Nabil Al-Zaqri; Adel El-Marghany; Khaled A. Abdelshafeek. 2020. "Removal of Lead(II) from Synthetic Wastewater by Lavandula pubescens Decne Biosorbent: Insight into Composition–Adsorption Relationship." Applied Sciences 10, no. 21: 7450.
The contamination of water surfaces by mercury is a dangerous environmental problem due to its toxicity, which leads kidney damage. Activated carbon from mixed recyclable waste modified by phosphonium-based ionic liquid (IL-ACMRW) was therefore prepared and evaluated for Hg(II) remediation. The activated carbon used in this study was prepared from mixed waste, including cardboard, papers and palm wastes as cheap raw materials. The mixed Recyclable Waste Activated Carbon was combined with trihexyl(tetradecyl)phosphonium Bis2,4,4-(trimethylpentyl)phosphinate (Cyphos® IL 104) ionic liquid to form an adsorbent with organic-inorganic content, in order to improve the Hg(II) uptake from aqueous solutions. FTIR confirms the presence of P, C=O and OH after this modification. The adsorption process was investigated and the evaluated results showed that the capacity was 124 mg/g at pH 4, with a contact time of 90 min, an adsorbent dose of 0.4 g/L, and a Hg(II) concentration of 50 mg/L. This Hg(II) adsorption capacity is superior than that reported in the literature for modified multiwall carbon nanotubes. The adsorption of Hg(II) on the modified activated carbon from mixed recyclable waste was found to follow the pseudo second-order kinetics model. Isotherms of adsorption were analyzed via Freundlich and Langmuir models. The results indicated that Freundlich is the best model to describe the process, suggesting multilayer adsorption.
Mohamed A. Habila; Zeid A. Alothman; Ayman A. Ghfar; Maha I.M. Al-Zaben; Ahmed A.S. Alothman; Ahmed A. Abdeltawab; Adel El-Marghany; Mohamed Sheikh. Phosphonium-based Ionic Liquid Modified Activated Carbon from Mixed Recyclable Waste for Mercury(II) Uptake. Molecules 2019, 24, 570 .
AMA StyleMohamed A. Habila, Zeid A. Alothman, Ayman A. Ghfar, Maha I.M. Al-Zaben, Ahmed A.S. Alothman, Ahmed A. Abdeltawab, Adel El-Marghany, Mohamed Sheikh. Phosphonium-based Ionic Liquid Modified Activated Carbon from Mixed Recyclable Waste for Mercury(II) Uptake. Molecules. 2019; 24 (3):570.
Chicago/Turabian StyleMohamed A. Habila; Zeid A. Alothman; Ayman A. Ghfar; Maha I.M. Al-Zaben; Ahmed A.S. Alothman; Ahmed A. Abdeltawab; Adel El-Marghany; Mohamed Sheikh. 2019. "Phosphonium-based Ionic Liquid Modified Activated Carbon from Mixed Recyclable Waste for Mercury(II) Uptake." Molecules 24, no. 3: 570.
Magnetic nanoparticles are used in adsorptive removal of heavy metals from polluted wastewater. However, their poor stability in an acidic medium necessitates their protection with a coating layer. Coating magnetic nanoparticles with carbon showed proper protection but the heavy metal removal efficiency was slightly weak. However, to boost the removal efficiencies of surface functionalization, polyacrylamide was applied to carbon-coated Fe3O4 nanoparticles. In this paper, to facilitate the synthesis process, one-step carbon coating and polyacrylamide functionalization were conducted using the hydrothermal technique with the aim of enhancing the adsorptive removal capacity of Fe3O4 nanoparticles towards some heavy metals such as Cu(II), Ni(II), Co(II), and Cd(II). The results showed that the one-step process succeeded in developing a carbon coating layer and polyacrylamide functionality on Fe3O4 nanoparticles. The stability of the magnetic Fe3O4 nanoparticles as an adsorbent in an acidic medium was improved due to its resistance to the dissolution that was gained during carbon coating and surface functionalization with polyacrylamide. The adsorptive removal process was investigated in relation to various parameters such as pH, time of contact, metal ion concentrations, adsorbent dose, and temperature. The polyacrylamide functionalized Fe3O4 showed an improvement in the adsorption capacity as compared with the unfunctionalized one. The conditions for superior adsorption were obtained at pH 6; time of contact, 90 min; metal solution concentration, 200 mg/L; adsorbent dose, 0.3 g/L. The modeling of the adsorption data was found to be consistent with the pseudo-second-order kinetic model, which suggests a fast adsorption process. However, the equilibrium data modeling was consistent with both the Langmuir and Freundlich isotherms. Furthermore, the thermodynamic parameters of the adsorptive removal process, including ΔG°, ΔH°, and ΔS°, indicated a spontaneous and endothermic sorption process. The developed adsorbent can be utilized further for industrial-based applications.
Mohamed A. Habila; Zeid A. Alothman; Ahmed Mohamed El-Toni; Joselito Puzon Labis; Aslam Khan; Adel Al-Marghany; Hussein Elsayed Elafifi. One-Step Carbon Coating and Polyacrylamide Functionalization of Fe3O4 Nanoparticles for Enhancing Magnetic Adsorptive-Remediation of Heavy Metals. Molecules 2017, 22, 2074 .
AMA StyleMohamed A. Habila, Zeid A. Alothman, Ahmed Mohamed El-Toni, Joselito Puzon Labis, Aslam Khan, Adel Al-Marghany, Hussein Elsayed Elafifi. One-Step Carbon Coating and Polyacrylamide Functionalization of Fe3O4 Nanoparticles for Enhancing Magnetic Adsorptive-Remediation of Heavy Metals. Molecules. 2017; 22 (12):2074.
Chicago/Turabian StyleMohamed A. Habila; Zeid A. Alothman; Ahmed Mohamed El-Toni; Joselito Puzon Labis; Aslam Khan; Adel Al-Marghany; Hussein Elsayed Elafifi. 2017. "One-Step Carbon Coating and Polyacrylamide Functionalization of Fe3O4 Nanoparticles for Enhancing Magnetic Adsorptive-Remediation of Heavy Metals." Molecules 22, no. 12: 2074.