Publication: An efficient wastewater treatment through reduction of organic dyes using Ag nanoparticles supported on cellulose gum beads
Date
2024
Authors
Khan M.S.J.
Sidek L.M.
Kamal T.
Asiri A.M.
Khan S.B.
Basri H.
Zawawi M.H.
Ahmed A.N.
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier B.V.
Abstract
This work reports silver nanoparticles (AgNPs) supported on biopolymer carboxymethyl cellulose beads (Ag-CMC) serves as an efficient catalyst in the reduction process of p-nitrophenol (p-NP) and methyl orange (MO). For Ag-CMC synthesis, first CMC beads were prepared by crosslinking the CMC solution in aluminium nitrate solution and then the CMC beads were introduced into AgNO3 solution to adsorb Ag ions. Field emission scanning electron microscopy (FE-SEM) analysis suggests the uniform distribution of Ag nanoparticles on the CMC beads. The X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) analysis revealed the metallic and fcc planes of AgNPs, respectively, in the Ag-CMC catalyst. The Ag-CMC catalyst exhibits remarkable reduction activity for the p-NP and MO dyes with the highest rate constant (kapp) of a chemical reaction is 0.519 and 0.697 min?1, respectively. Comparative reduction studies of Ag-CMC with CMC, Fe-CMC and Co-CMC disclosed that Ag-CMC containing AgNPs is an important factore in reducing the organic pollutants like p-NP and MO dyes. During the recyclability tests, the Ag-CMC also maintained high reduction activity, which suggests that CMC protects the AgNPs from leaching during dye reduction reactions. ? 2023 Elsevier B.V.
Description
Keywords
Aluminum Compounds , Beads , Carboxymethyl Cellulose , Reduction , Scanning Electron Microscopy , Silver Compounds , Biopolymers , Carboxymethylcellulose Sodium , Coloring Agents , Metal Nanoparticles , Silver , Aluminum compounds , Biomolecules , Biopolymers , Catalyst activity , Cellulose , Crosslinking , Field emission microscopes , Metal nanoparticles , Organic pollutants , Rate constants , Scanning electron microscopy , Silver compounds , Wastewater treatment , X ray diffraction analysis , 4 nitrophenol , aluminum nitrate , biopolymer , carboxymethylcellulose , dye , methyl orange , silver , silver nanoparticle , biopolymer , carboxymethylcellulose , coloring agent , metal nanoparticle , silver , % reductions , Carboxymethyl cellulose , Cellulose beads , Dye reduction , Methyl orange dyes , Organic dye , p-Nitrophenol , Reduction activity , Waste-water treatment , ]+ catalyst , adsorption , Article , catalyst , chemical reaction , controlled study , cross linking , field emission scanning electron microscopy , leaching , rate constant , recycling , reduction (chemistry) , synthesis , waste water management , water pollutant , X ray diffraction , X ray photoemission spectroscopy , Silver nanoparticles