Document Type
Article
Source of Publication
Polymers
Publication Date
12-23-2024
Abstract
This work focuses on the preparation and application of silver nanoparticles/organophilic clay/polyethylene glycol for the catalytic reduction of the contaminants methylene blue (MB) and 4-nitrophenol (4-NP) in a simple and binary system. Algerian clay was subjected to a series of treatments including acid treatment, ion exchange with the surfactant hexadecyltrimethylammonium bromide (HTABr), immobilization of polyethylene glycol polymer, and finally dispersion of AgNPs. The molecular weight of polyethylene glycol was varied (100, 200, and 4000) to study its effect on the stabilization of silver nanoparticles (AgNPs) and the catalytic activity of the resulting samples. The results showed that the catalyst with the highest molecular weight of polyethylene glycol had the highest AgNP content. Catalyst mass, NaBH4 concentration, and type of catalyst were shown to have a significant influence on the conversion and rate constant. The material with the highest silver nanoparticle content was identified as the optimal catalyst for the reduction of both pollutants. The measured rate constants for the reduction of methylene blue (MB) and 4-nitrophenol (4-NP) were 164 × 10-4 s-1 and 25 × 10-4 s-1, respectively. The reduction of MB and 4-NP in the binary system showed high selectivity for MB dye, with rate constants of 64 × 10-4 s-1 and 9 × 10-4 s-1 for MB and 4-NP, respectively. The reuse of the best catalyst via MB dye reduction for four cycles showed good results without loss of performance.
DOI Link
ISSN
Publisher
MDPI AG
Volume
16
Issue
24
First Page
3608
Last Page
3608
Disciplines
Engineering
Keywords
Silver nanoparticles, Organophilic clay, Polyethylene glycol, Catalytic reduction, Organic pollutants
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Recommended Citation
Sardi, Amina; Boukoussa, Bouhadjar; Benmaati, Aouicha; Chinoune, Kheira; Mokhtar, Adel; Hachemaoui, Mohammed; Abdelkrim, Soumia; Ismail, Issam; Iqbal, Jibran; Patole, Shashikant P.; Viscusi, Gianluca; and Abboud, Mohamed, "In Situ Preparation of Silver Nanoparticles/Organophilic-Clay/Polyethylene Glycol Nanocomposites for the Reduction of Organic Pollutants" (2024). All Works. 7068.
https://zuscholars.zu.ac.ae/works/7068
Indexed in Scopus
no
Open Access
yes
Open Access Type
Gold: This publication is openly available in an open access journal/series