Catalytic Activity for Dye Degradation and Characterization of Silver/Silver Oxide Nanoparticles Green Synthesized by Aqueous Leaves Extract of Phoenix Dactylifera L.

Laouini, Salah Eddine; Tedjani, Mohammed Laid

doi:10.21203/rs.3.rs-139856/v1

Cited by 17 publications

(5 citation statements)

References 44 publications

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“…λ max = 372, 523 and 800 nm) relating to Cr (VI), Mn (VII) & Cu(II) matching well with early-declared findings (Fig. 7) [48]. To evaluate the adsorption influence of the designed adsorbents, Cr (VI), Cu (II) & Mn (VII) was used as a model heavy metals contaminants in this study.…”

Section: Removal Performance Of Rgo and Magnetite Nanocomposites Towa...supporting

confidence: 81%

Magnetite/Reduced Graphene Oxide Synthesis and Study as a Potential Adsorbent for Absorptive Removal of Heavy Metals

Eldamhogy

Tantawy

Elkorashy

et al. 2022

Advances in Environmental and Life Sciences

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Owing to its exceptional properties, graphene, a planar layer of sp 2 -bonded carbon atoms, attracted interest of researchers. A distinct matrix for nanocomposites, graphene has exceptional chemical endurance, high surface/volume ratio, and strong electrical conductivity. Due of their versatility, research in recent years has focused on incorporating graphene with appropriate materials. In this study, Improved Hummer method utilized in synthesizing graphene oxide (GO). An appropriate chemical reducing agent was used to synthesize (RGO). Magnetite was prepared from ferrous ammonium sulfate and ((NH 4 ) 2 Fe(SO 4 )26H 2 O) to ferric chloride (FeCl 3 ), then by co-precipitation method Magnetite Reduced Graphene Oxide (MRG) was synthesized with different amounts of RGO relative to magnetite (5, 10, and 30% wt. %) To prepare (MRG 5, 10, and 30%). Samples were morphologically characterized using a (HRTEM). Additionally, Raman and FTIR spectroscopy were used to identify the samples' chemical composition. Using (XRD), samples' crystallographic was identified. To ascertain the magnetic behavior, (VSM) was employed. Furthermore, fluctuation in metal ions concentration vs adsorption time was studied by UV-VIS spectrophotometer. Research findings demonstrated produced nano-composites' great adsorption potential even higher than both RGO and magnetite, the nano-composites demonstrated a synergistic effect that enhanced the composite's adsorption effectiveness. A 30% RGO sample was found to have the max adsorption activity for Cr (VI), Cu (II), and Mn (VII) with values of % removal 68, 80, and 70% respectively at PH =9 which make (MRG30) the ideal sample for heavy metal removal.

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Section: Removal Performance Of Rgo and Magnetite Nanocomposites Towa...supporting

confidence: 81%

Magnetite/Reduced Graphene Oxide Synthesis and Study as a Potential Adsorbent for Absorptive Removal of Heavy Metals

Eldamhogy

Tantawy

Elkorashy

et al. 2022

Advances in Environmental and Life Sciences

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“…An industrial revolution is in offing in nanoscience, to convert negative nanostructures into its positive and productive aspect. Nanotechnology is predicted to play a great role in the developing world, contributing to advances in medicine and pharmacy besides transport, energy storage etc 7 . Their shape, surface properties and size on modification give rise to several nano systems which may be utilized in imaging, diagnosis and treatment of serious diseases.…”

Section: Benefits Of Nanomaterialsmentioning

confidence: 99%

Application of Nanoparticles in Medicine

Pandya¹,

Saran²

2022

J. ISAS

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Nanomaterials due to their size (ranging from 0.1-100 nm, at least in one dimension) and higher ratio of surface area to volume display dominant quantum effects causing drastic changes in their chemical reactivity as well as optical, elastic, electrical and magnetic properties. The electrons due to their wave nature move very easily without scattering in nanomaterials and allow their use as biological sensors. Nano wires, semiconducting in nature, act as a versatile optoelectronic component in photodetectors sensitive to polarization and arrays with sub wavelength resolution. The wide applicability of nanomaterials in medicines emerge from the similarity in size of biomolecule moieties of metabolic processes occurring at nano levels. Optical properties of quantum dots allow their use as biomarkers subsequent to coating with a material able to bind selectively with certain biological structures like cancer cells by fluorescent absorption followed by emission of electrons known as functionalised quantum dots. Nanomaterials on combining with biomolecules develop ability to recognize sensitive diagnostic and regulated drug delivery processes with appreciably better performances and may be used as tissue substitutes. The properties produced in organic solvents make them hydrophobic and incompatible to biological molecules. At the same time, they may be converted into water soluble form and made biocompatible through different techniques like ligand exchange, encapsulation, polymer coating (with functional groups attached to the surface) providing reactive site for bio conjugation through different processes keeping limitations of the processes in view. Nanomaterials play prominent role in medicines as obviated by growing global market for them in the field expected to reach to USD 182.3 billion by 2027 at a compounded annual growth rate of 19.9% from 2021

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“…However, their large-scale environmental application remains difficult due to financial constraints. Due to their optical, physical, and biological properties, metal oxide nanoparticles (NPs) such as silver oxide (Ag 2 O) [15], zinc oxide (ZnO) [16], copper oxide (CuO) [17], and iron oxide (Fe 2 O 3 ) [18] are now considered potential alternatives for catalysis. Many scientists focused their catalysis studies on CuO NPs due to their diverse applications in water pollutant treatment and environmental remediation [19].…”

Section: Introductionmentioning

confidence: 99%

Croton macrostachyus leaf-mediated biosynthesis of copper oxide nanoparticles for enhanced catalytic reduction of organic dyes

Bassa,

Zelekew,

Meresa

et al. 2024

Mater. Res. Express

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Introduction: Owing to the increasing use of organic dyes, the biosynthesis of metal oxide nanocatalysts is urgently required as an economical and environmentally friendly solution to reduce their waste release. Method: In this study, we synthesized copper oxide nanoparticles (CuO NPs) by the sol-gel method using Croton Macrostachyus (CM) leaf extracts as capping and reducing agents. The synthesized CuO catalysts were characterized using X-ray diffraction analysis (XRD), thermogravimetric differential thermal analysis (TGA-DTA), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and Fourier transform infrared spectroscopy (FTIR). Result: The result showed that the synthesized CuO NPs had a crystallite size of about 9 nm and had good crystalline texture. Furthermore, the catalyst showed the best catalytic reduction performance in 1 min for methylene blue (MB) and 3 min for methyl orange (MO). Furthermore, the CuO catalyst synthesized using Croton macrostachyus leaf extract resulted in apparent rate constant (Kapp) values for MB and MO of 0.06793 s-1 and 0.01877 s-1, respectively. Discussion: the recyclability of the CuO catalyst was investigated, and it was shown that the catalysts are suitable for reuse in dye reduction. Therefore, the catalytic activity of this study suggests that the CuO nanocatalysts prepared in this work are a potential candidate for controlling organic pollutants or trace amounts of naturally occurring active organic chemicals in all environmental dye wastes.

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Catalytic Activity for Dye Degradation and Characterization of Silver/Silver Oxide Nanoparticles Green Synthesized by Aqueous Leaves Extract of Phoenix Dactylifera L.

Cited by 17 publications

References 44 publications

Magnetite/Reduced Graphene Oxide Synthesis and Study as a Potential Adsorbent for Absorptive Removal of Heavy Metals

Magnetite/Reduced Graphene Oxide Synthesis and Study as a Potential Adsorbent for Absorptive Removal of Heavy Metals

Application of Nanoparticles in Medicine

Croton macrostachyus leaf-mediated biosynthesis of copper oxide nanoparticles for enhanced catalytic reduction of organic dyes

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