Preparation of activated carbon-metal nanoparticle composite materials for the catalytic reduction of organic pollutants

Author First name, Last name, Institution

Bouhadjar Boukoussa, Département de Génie des Matériaux, Faculté de Chimie, Université des Sciences et de la Technologie Mohamed Boudiaf, BP 1505, El-Mnaouer, 31000 Oran, Algeria; Laboratoire de Chimie des Matériaux L.C.M, Université Oran1 Ahmed Ben Bella, BP 1524, El-Mnaouer, 31000 Oran, Algeria
Khoukha Rachida Cherdouane, Département de Génie des Matériaux, Faculté de Chimie, Université des Sciences et de la Technologie Mohamed Boudiaf, BP 1505, El-Mnaouer, 31000 Oran, Algeria
Rajaa Zegai, Département de Génie des Matériaux, Faculté de Chimie, Université des Sciences et de la Technologie Mohamed Boudiaf, BP 1505, El-Mnaouer, 31000 Oran, Algeria
Adel Mokhtar, Laboratoire de Chimie des Matériaux L.C.M, Université Oran1 Ahmed Ben Bella, BP 1524, El-Mnaouer, 31000 Oran, Algeria; Department of Process Engineering, Faculty of Science and Technology, University of Relizane, 48000 Relizane, Algeria
Mohammed Hachemaoui, Laboratoire de Chimie des Matériaux L.C.M, Université Oran1 Ahmed Ben Bella, BP 1524, El-Mnaouer, 31000 Oran, Algeria; Département de Sciences de la Matière, Institut des Sciences et Technologies, Université Ahmed Zabana, 48000 Relizane, Algeria
Ismail Issam, Khalifa University of Science and Technology
Jibran Iqbal, Zayed University
Shashikant P. Patole, Khalifa University of Science and Technology
Algeria; Center de Recherche Scientifique et Technique en Analyses Physico-chimiques Zeggai, Fatima Zohra (Laboratory of Polymer Chemistry, Department of Chemistry, Faculty of Exact and Applied Sciences, University Oran1 Ahmed Ben Bella, BP 1524 El M'Naouar, Oran 31000, CRAPC
, BP 38Bou-Ismail-RP, Tipaza 42004, Algeria , BP 38Bou-Ismail-RP, Tipaza 42004, Algeria, , BP 38Bou-Ismail-RP, Tipaza 42004, Algeria
Rachida Hamacha, Laboratoire de Chimie des Matériaux L.C.M, Université Oran1 Ahmed Ben Bella, BP 1524, El-Mnaouer, 31000 Oran, Algeria
Mohamed Abboud, King Khalid University

Document Type

Article

Source of Publication

Surfaces and Interfaces

Publication Date

1-1-2024

Abstract

This work focuses on the preparation of inexpensive composite materials based on activated carbon-containing metallic nanoparticles MNPs (M = Cu, Ag, Fe). The metal nanoparticles supported on the activated carbon were prepared by ultrasound followed by chemical treatment using a reducing agent NaBH4. The obtained materials were characterized by XRD, XRF, FTIR, XPS, TGA, SEM, and TEM analysis. The different samples were tested as catalysts for the catalytic reduction of organic pollutants (MB, MO, 4-NP) in a simple and binary system in the presence of NaBH4. The results confirmed that the content of metal nanoparticles was in the following sequence 2.12%, 11.15%, and 12.13% for the materials AC-Ag, AC-Cu, and AC-Fe, respectively. According to TEM analysis, the size and dispersion of nanoparticles differ from one catalyst to another, hence the AC-Cu material exhibited good dispersion of CuNPs having ultrafine particles in the range of 4–14 nm. In order to optimize the best conditions for the reduction reaction, the effect of the nature of the catalyst, the initial concentration of NaBH4, the concentration of the pollutant, the mass of the catalyst and the nature of the pollutant were studied, and discussed. In terms of efficiency, the AC-Cu sample was the most efficient catalyst compared to AC-Fe, and AC-Ag, mainly due to the good dispersion of CuNPs on the surface of activated carbon. The recorded rate constant for the MB, MO, and 4-NP in the single system using the same operating conditions was 0.0259 s − 1, 0.0218 s − 1, and 0.0074 s − 1, respectively. In the binary system containing MB + MO or MB + 4-NP, the AC-Cu catalyst was more selective towards the MB dye in both systems. The reuse of the AC-Cu catalyst towards the reduction of the MB dye showed good performance during five consecutive cycles without losing its efficiency.

ISSN

2468-0230

Publisher

Elsevier BV

Volume

44

First Page

103622

Last Page

103622

Disciplines

Environmental Sciences

Keywords

Activated carbon, Metal nanoparticles, CuNPs, Dye reduction

Indexed in Scopus

no

Open Access

no

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