Effect of Ferric Chloride Concentration on the Type of Magnetite (Fe3O4) Nanoparticles Biosynthesized by Aqueous Leaves Extract of Artemisia and Assessment of Their Antioxidant Activities

Bouafia, Abderrhmane; Laouini, Salah Eddine; Khelef, Abdelhamid; Tedjani, Mohammed Laid; Guemari, Fathi

doi:10.1007/s10876-020-01868-7

Cited by 82 publications

(22 citation statements)

References 26 publications

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“…The resultant FTIR spectra exhibited several absorption bands corresponding to the functional groups of the biomolecules existing in the plant extract. Five main absorption bands were observed: the broadband centered at 3340 cm −1 is assigned to O–H stretching vibrations [ 46 ], and the intense band at 1650 cm −1 is due to C=O stretching and N–H bending vibrations of the primary amides group, which is commonly found in the protein [ 47 ]. The absorption bands situated around 1740 and 1364 cm −1 correspond to the stretching vibrations of C=C, C–C, and C–O of the aromatics cycles [ 48 ].…”

Section: Resultsmentioning

confidence: 99%

Green Synthesized of Ag/Ag2O Nanoparticles Using Aqueous Leaves Extracts of Phoenix dactylifera L. and Their Azo Dye Photodegradation

et al. 2021

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In this study, silver/silver oxide nanoparticles (Ag/Ag2O NPs) were successfully biosynthesized using Phoenix dactylifera L. aqueous leaves extract. The effect of different plant extract/precursor contractions (volume ratio, v/v%) on Ag/Ag2O NP formation, their optical properties, and photocatalytic activity towards azo dye degradation, i.e., Congo red (CR) and methylene blue (MB), were investigated. X-ray diffraction confirmed the crystalline nature of Ag/Ag2O NPs with a crystallite size range from 28 to 39 nm. Scanning electron microscope images showed that the Ag/Ag2O NPs have an oval and spherical shape. UV–vis spectroscopy showed that Ag/Ag2O NPs have a direct bandgap of 2.07–2.86 eV and an indirect bandgap of 1.60–1.76 eV. Fourier transform infrared analysis suggests that the synthesized Ag/Ag2O NPs might be stabilized through the interactions of -OH and C=O groups in the carbohydrates, flavonoids, tannins, and phenolic acids present in Phoenix dactylifera L. Interestingly, the prepared Ag/Ag2O NPs showed high catalytic degradation activity for CR dye. The photocatalytic degradation of the azo dye was monitored spectrophotometrically in a wavelength range of 250–900 nm, and a high decolorization efficiency (84.50%) was obtained after 50 min of reaction. As a result, the use of Phoenix dactylifera L. aqueous leaves extract offers a cost-effective and eco-friendly method.

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Section: Resultsmentioning

confidence: 99%

Green Synthesized of Ag/Ag2O Nanoparticles Using Aqueous Leaves Extracts of Phoenix dactylifera L. and Their Azo Dye Photodegradation

et al. 2021

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“…The mixture was stirred stably at room temperature for one day. After that, the extract was filtered with filter paper (Whatman No: 42) and stored in a glass container at 4°C for further use 6,8,17 .…”

Section: Preparation Of Plant Leaf Extractmentioning

confidence: 99%

“…The resultant FTIR spectrum ( Figure 5) has exhibited several absorption bands that correspond to the functional groups of the biomolecules existing in the plant extract. Five main absorption peaks were observed, the broad peak centered at 3340 cm -1 is assigned to O-H stretching vibrations 6 , the intense peak at 1650 cm -1 is due to C=O stretching and N-H bending vibrations of primary amides group which is commonly found in the protein 26 . The two peaks located at 1364 cm -1 and 1204 cm -1 are assigned to the nitro banding N-O vibrations and C-O-C stretching vibrations of the aromatic ring respectively 27 .…”

Section: 12fourier Transform Infrared (Ftir) Spectroscopymentioning

confidence: 99%

“…Green synthesis is a modern area of biotechnology that is economically and environmentally beneficial as an alternative to chemical and physical methods that contain part of the hazard to the environment. Because in this method, biologically safe, non-toxic, and environmentally friendly natural reagents 4 , Mentha pulegium L 5 , Artemisia 6 , Moringa Oleifera 7 , Phoenix dactylifera L 8 , and others are used in the biosynthesis of metal oxide nanoparticles 9,10 . The researchers used widely available plant extracts in nature in the green synthesis of metal oxide nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

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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.

Laouini

Tedjani

2021

Preprint

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In this study, green synthesis of silver /silver oxide nanoparticles was successfully prepared from Phoenix Dactylifera L aqueous leaves extract. The effect of different volume ratio (% v/v) (Plant extract / Precursor) on the nanoparticles silver /silver oxide nanoparticles formation, optical properties, and catalytic activity for dye degradation was studied. The obtained Ag/Ag2O nanoparticles were characterized using various techniques, such as UV-Visible, FT-IR, XRD, SEM for this purpose. The UV-Vis spectrum shows the absorption at 430 nm associated with Ag/Ag2O NPs. The optical bandgap values were found to be in the range of 3.22 to 4.47 eV for the direct bandgap and 3.73 to 5.23 eV for the indirect bandgap. The functional groups present in plant extracts were studied by FTIR. XRD confirmed the crystalline nature of Ag / Ag2O NP, and its average particle size was between 28.66-39.40 nm. SEM showed that the green synthesized silver/silver oxide nanoparticles have a spherical shape. The purpose of this study, it highlights the high catalytic activity for dye degradation of Ag/Ag2O NPs green synthesized. As a result, the use of Phoenix Dactylifera L aqueous leaves extract offers a cost-effective and eco-friendly method.

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“…Green synthesis approaches have attracted great attention in developing nanomaterial preparations to overcome the limitations of the techniques mentioned above [ 33 , 34 , 35 ]. The procedure for this technique is described in Figure 4 .…”

Section: Metal Nanoparticles Synthesismentioning

confidence: 99%

The Recent Progress on Silver Nanoparticles: Synthesis and Electronic Applications

et al. 2021

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Nanoscience enables researchers to develop new and cost-effective nanomaterials for energy, healthcare, and medical applications. Silver nanoparticles (Ag NPs) are currently increasingly synthesized for their superior physicochemical and electronic properties. Good knowledge of these characteristics allows the development of applications in all sensitive and essential fields in the service of humans and the environment. This review aims to summarize the Ag NPs synthesis methods, properties, applications, and future challenges. Generally, Ag NPs can be synthesized using physical, chemical, and biological routes. Due to the great and increasing demand for metal and metal oxide nanoparticles, researchers have invented a new, environmentally friendly, inexpensive synthetic method that replaces other methods with many defects. Studies of Ag NPs have increased after clear and substantial support from governments to develop nanotechnology. Ag NPs are the most widely due to their various potent properties. Thus, this comprehensive review discusses the different synthesis procedures and electronic applications of Ag NPs.

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Effect of Ferric Chloride Concentration on the Type of Magnetite (Fe3O4) Nanoparticles Biosynthesized by Aqueous Leaves Extract of Artemisia and Assessment of Their Antioxidant Activities

Cited by 82 publications

References 26 publications

Green Synthesized of Ag/Ag2O Nanoparticles Using Aqueous Leaves Extracts of Phoenix dactylifera L. and Their Azo Dye Photodegradation

Green Synthesized of Ag/Ag2O Nanoparticles Using Aqueous Leaves Extracts of Phoenix dactylifera L. and Their Azo Dye Photodegradation

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

The Recent Progress on Silver Nanoparticles: Synthesis and Electronic Applications

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