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Physically-crosslinked hydroxyethyl cellulose-g-poly (acrylic acid-co-acrylamide)-Fe 3+ /silver nanoparticles for water disinfection and enhanced adsorption of basic methylene blue dye.

Authors :
Sultan M
Nagieb ZA
El-Masry HM
Taha GM
Source :
International journal of biological macromolecules [Int J Biol Macromol] 2022 Jan 31; Vol. 196, pp. 180-193. Date of Electronic Publication: 2021 Nov 20.
Publication Year :
2022

Abstract

In this study, we report the development of physically cross-linked hydroxyethyl cellulose grafted polyacrylic acid-co-polyacrylamide/silver nanocomposite [Ag@HEC-g-P(AA-co-AM)-Fe <superscript>3+</superscript> ] possesses excellent antimicrobial and enhanced MB adsorption. A green in-situ reduction process was used to prepare silver nanoparticles. UV-Vis spectroscopy, TEM, ATR-IR, XRD, SEM-EDS were used to analyze the green produced silver nanoparticles and Ag@HEC-g-P(AA-co-AM)-Fe <superscript>3+</superscript> . The swelling ratio of Ag@HEC-g-P(AA-co-AM)-Fe <superscript>3+</superscript> is dependent on AgNPs content and pH. The swelling kinetics fitted with Pseudo-second order. The cumulative release#% of AgNPs was 29.63 ± 1.7%, respectively up to 10 h and its kinetics obey Korsmeyer-Peppas model. The grafting to HEC and incorporation of AgNPs into HEC-g-P(AA-co-AM)-Fe <superscript>3+</superscript> enhances the thermal stabilities and increases total activation energies from 19,122.2 to 66,287.1 KJ mol. Ag@HEC-g-P(AA-co-AM)-Fe <superscript>3+</superscript> has powerful antimicrobial activity against Escherichia coli, Pseudomonas aeruginosa, Bacillus subtilis, Micrococcus leutus, Staphyllococus aureus. The maximum adsorption capacity of MB was 133.38 ± 1.25 mg/g at nanocomposite concentration (300 mg/L), pH (9.0), and MB concentration (5 mg/L). To anticipate the adsorption mechanism, Pseudo-first and second-order models, as well as three isotherm models (Langmuir, Freundlich, and Temkin) were used to model adsorption kinetics. The nonlinear Langmuir models and second-order kinetics were the most appropriate.<br /> (Copyright © 2021. Published by Elsevier B.V.)

Details

Language :
English
ISSN :
1879-0003
Volume :
196
Database :
MEDLINE
Journal :
International journal of biological macromolecules
Publication Type :
Academic Journal
Accession number :
34813782
Full Text :
https://doi.org/10.1016/j.ijbiomac.2021.11.109