Effect of Green Silver Nanoparticles Embedded in Irradiated Sodium Alginate /Poly Acrylamide on Removal of Dye Wastes

Partila, Abir M.; El-Hadedy, D. E.

doi:10.1080/16878507.2020.1742442

Cited by 5 publications

(3 citation statements)

References 39 publications

(48 reference statements)

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“…5). It may be because at higher adsorbate concentration the binding capacity of the adsorbent approaches saturation resulting in a decreases in overall percentage removal [19] Fig…”

Section: Effect Of Concentration Of Fluoridementioning

confidence: 99%

Fluoride Adsorption from Aqueous Solution Using Natural Adsorbents Such As Centella Asiatica

Kistan¹

2022

JPPR

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In this study carried out by means of photo-colorimetry using the SPANDS indicator at 620 nm to adsorb Fluoride ion from aqueous solution. The influence of pH was studied by altering the pH from 2 to 12 using a 0.1 Molar concentration of HCl & NaOH solution using 10 ppm Fluoride concentration of as an initial point a kinetic investigation was conducted at pH 6.90 0.10 at various time intervals. The adsorption isotherm was investigated at pH of 6.90 by changing the initial fluoride concentration from 5 to 50 mg / L. The skills of 4 different isotherms used such as Langmuir, Freundlich, Temkin, and Redlich-Peterson adsorption isotherms were examined. To elucidate the mechanism of fluoride adsorption on the surface of the adsorbent, the kinetic model's pseudo-first-order, pseudo-second-order, intra-particle diffusion, and Elovich models are employed to examine the current adsorption data to determine the related kinetic parameters. Lastly, the effects of a number competing for ions (Cl-, NO3-, SO42-, PO43-, Ca2+ and Mg2+) were detected using, 20 - 200 mg / L solution at pH 6.90 ± 0.10 over 1 hr. SEM, XRD, and FT-IR techniques were used to investigate the surface morphology and size distribution of the natural adsorbent for fluoride adsorption (Centella Asiatica). The impact of adsorbent dosage, contact time, pH, co-ions, initial fluoride concentration, and shaking speed Centella Asiatica was determined and clearly reported

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“…5). It may be because at higher adsorbate concentration the binding capacity of the adsorbent approaches saturation resulting in a decreases in overall percentage removal [19] Fig…”

Section: Effect Of Concentration Of Fluoridementioning

confidence: 99%

Fluoride Adsorption from Aqueous Solution Using Natural Adsorbents Such As Centella Asiatica

Kistan¹

2022

JPPR

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“…39 The Ag nanoparticles embedded in the SA/poly acrylamide polymer have been reported for excellent catalytic reduction of hazardous dyes. 40 The composites of SA/PVP/TiO 2 showed 98.9% deterioration of methylene blue dye in 120 min. 41 In light of the above discussion, the innovation of this study is to develop metal sulfide-based nanostructures involving no additional energy but utilizing biocompatible polymer gelbased materials, where the structures originate at the interface and progress deep within the gel phase by the gradual diffusion of reactant particles.…”

Section: ■ Introductionmentioning

confidence: 99%

“…The magnetic SA and magnetic SA/H 2 O 2 photocatalytically degraded AZO dyes from its aqueous solution . The Ag nanoparticles embedded in the SA/poly acrylamide polymer have been reported for excellent catalytic reduction of hazardous dyes . The composites of SA/PVP/TiO 2 showed 98.9% deterioration of methylene blue dye in 120 min …”

Section: Introductionmentioning

confidence: 99%

Sodium Alginate–CuS Nanostructures Synthesized at the Gel–Liquid Interface: An Efficient Photocatalyst for Redox Reaction and Water Remediation

2023

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The use of visible light to propel chemical reactions is an exciting area of study that is crucial in the current socioeconomic environment. However, various photocatalysts have been developed to harness visible light, which consume high energy during synthesis. Thus, synthesizing photocatalysts at gel–liquid interfaces in ambient conditions is of scientific importance. Herein, we report an environmentally benign sodium alginate gel being used as a biopolymer template to synthesize copper sulfide (CuS) nanostructures at the gel–liquid interface. The driving force for the synthesis of CuS nanostructures is varied by changing the pH of the reaction medium (i.e., pH 7.4, 10, and 13) to tailor the morphology of CuS nanostructures. The CuS nanoflakes obtained at pH 7.4 transform into nanocubes when the pH is raised to 10, and the nanostructures deform at the pH of 13. Fourier transform infrared spectroscopy (FTIR) confirms all the characteristic stretching of sodium alginate, whereas the CuS nanostructures are crystallized in a hexagonal crystal system, as revealed by the powder X-ray diffraction analysis. The high-resolution X-ray photoelectron spectroscopy (XPS) spectra show the +2 and −2 oxidation states of copper (Cu) and sulfur (S) ions, respectively. The CuS nanoflakes physisorbed a higher concentration of greenhouse CO2 gas. Owing to a lower band gap of CuS nanoflakes synthesized at a pH of 7.4, compared to other CuS nanostructures prepared at pH 10 and 13, CuS photocatalytically degrades 95% of crystal violet and 98% of methylene blue aqueous dye solutions in 60 and 90 min, respectively, under blue light illumination. Additionally, sodium alginate–copper sulfide (SA-CuS) nanostructures synthesized at a pH of 7.4 demonstrate excellent performance in photoredox reactions to convert ferricyanide to ferrocyanide. The current research opens the door to developing new photocatalytic pathways for a wide range of photochemical reactions involving nanoparticle-impregnated alginate composites prepared on gel interfaces.

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Effect of Microbially Produced Silver Nanoparticles on Bioremediation of Waste Dye: Nanobioremediation

Partila

2021

Microorganisms for Sustainability

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Effect of Green Silver Nanoparticles Embedded in Irradiated Sodium Alginate /Poly Acrylamide on Removal of Dye Wastes

Cited by 5 publications

References 39 publications

Fluoride Adsorption from Aqueous Solution Using Natural Adsorbents Such As Centella Asiatica

Fluoride Adsorption from Aqueous Solution Using Natural Adsorbents Such As Centella Asiatica

Sodium Alginate–CuS Nanostructures Synthesized at the Gel–Liquid Interface: An Efficient Photocatalyst for Redox Reaction and Water Remediation

Effect of Microbially Produced Silver Nanoparticles on Bioremediation of Waste Dye: Nanobioremediation

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