yosef, M., Fahmy, A., hassan, A., El hotaby, W., Anis, B. (2021). Porous Polyvinyl Formaldehyde / MWCNTs Foam for Pb+2 Removal from Water. Egyptian Journal of Chemistry, 64(1), 533-545. doi: 10.21608/ejchem.2020.34453.2733
Mohammed yosef; Alaa Fahmy; Ali hassan; Walid El hotaby; Badawi Anis. "Porous Polyvinyl Formaldehyde / MWCNTs Foam for Pb+2 Removal from Water". Egyptian Journal of Chemistry, 64, 1, 2021, 533-545. doi: 10.21608/ejchem.2020.34453.2733
yosef, M., Fahmy, A., hassan, A., El hotaby, W., Anis, B. (2021). 'Porous Polyvinyl Formaldehyde / MWCNTs Foam for Pb+2 Removal from Water', Egyptian Journal of Chemistry, 64(1), pp. 533-545. doi: 10.21608/ejchem.2020.34453.2733
yosef, M., Fahmy, A., hassan, A., El hotaby, W., Anis, B. Porous Polyvinyl Formaldehyde / MWCNTs Foam for Pb+2 Removal from Water. Egyptian Journal of Chemistry, 2021; 64(1): 533-545. doi: 10.21608/ejchem.2020.34453.2733
Porous Polyvinyl Formaldehyde / MWCNTs Foam for Pb+2 Removal from Water
1Chemistry Department, Faculty of Science, Al Azhar University, 11884 Cairo, Egypt
2Spectroscopy Department., Physics Division., National Research Centre, Dokki, Giza, Egypt
Receive Date: 09 July 2020,
Revise Date: 13 August 2020,
Accept Date: 16 August 2020
Abstract
Preparation of macro-porous polyvinyl formaldehyde / multi-walled carbon nanotubes (PVF/MWCNTs) foam was done via one step reaction during acetalization of polyvinyl alcohol (PVA). The as-prepared PVF/MWCNTs composite was used as an eco-friendly, easy recovery sorbets for Pb (II) from aqueous medium. Fourier transform infrared (FTIR), and high-resolution scanning electron microscopy (HRSEM) were used to investigate the chemical composition and morphological structure of the prepared foam. The results showed that equilibrium occurred within 60 min at pH≈ 5 with a maximum adsorption capacity 3.4 mg/g with 43 % removal (considering the total weight of composite). In addition, the kinetic results are most fitted with pseudo-second-order model indicating that the reaction mechanism is chemisorption in nature. Therefore, it is suggested that the prepared PVF/MWCNTs foam can be used in water treatment systems as an eco-friendly and efficiency sorbent.
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