A Novel Green Synthesis of Zinc Sulfide Nano-Adsorbents Using Artemisia Herba Alba Plant Extract for Adsorption and Photocatalysis of Methylene Blue Dye

Ouni, Sabri; Mohamed, Naim Bel Haj; Haouari, Mohamed; Elaı̈ssari, Abdelhamid; Errachid, Abdelhamid; Jaffrezic‐Renault, Nicole

doi:10.1007/s42250-023-00667-7

Cited by 5 publications

(6 citation statements)

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“…note that, under ideal sunlight conditions, UV radiation only makes up 5% (50 W/m 2 ) of the total solar ux received at the earth surface (Ouni et al 2023b).…”

Section: Sunlight-based Photocatalytic Degradation Experimentsmentioning

confidence: 99%

“…The calculated D M values decreased with temperature from 26.45 to 10.64 mg/g. Note that if n values increased, the space in the ZnS-TGA nanoadsorbents surface reduced and, consequently, the number of adsorption sites available for dye removal became limited (Ouni et al 2023b). Indeed, a high D M value implies a high effectiveness of the adsorbent since more adsorption sites are available for pollutant adsorption (Bel Haj Mohamed et al 2022a).…”

Section: Dye Adsorption Kineticsmentioning

confidence: 99%

“…To overcome these drawbacks, the characterization and preparation of a new generation of zinc-based semiconducting colloidal nanocrystals have been studied. Zinc-based semiconducting colloidal nanocrystals are nanoscale semiconductor particles composed of zinc-based materials, such as zinc sul de (ZnS) or zinc selenide (ZnSe) (Bondar et al 2023;Ouni et al 2023b). The quantum con nement effect generates that they can display relevant electronic and optical properties.…”

Section: Introductionmentioning

confidence: 99%

“…The sulfonate groups on TGA-capped ZnS NPs was veri ed by the absorption bands at 780 cm − 1 (-C-S), 850 cm − 1 (-S-H), 1429 cm − 1 (-COO-), and 1508 cm − 1 (-C = O)(Mili et al 2023). The O-H elongation vibration of TGA molecules was identi ed via the wide absorption band at 3340 cm − 1(Ouni et al 2023b). These ndings showed that the TGA ligand was attached to the ZnS surface.…”

mentioning

confidence: 99%

“…An additional plausible reason might be that the dye's ability to block sunlight resulted in a decrease in the nanocatalysts capacity to absorb light(Ouni et al 2021). Dye molecules have a greater capacity to absorb sunlight than ZnS-TGA nanocatalysts, which lowered the catalytic reaction's e ciency as free radical concentrations dropped(Ouni et al 2023b).…”

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confidence: 99%

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An effective and sustainable dye removal via sunlight-based photocatalysis and adsorption using eco-friendly and low-cost ZnS nanoparticles: Experiments, modelling, and mechanism

Ouni,

Yahia,

Mohamed

et al. 2024

Preprint

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Novel sulfur zinc nanoparticles functionalized with thioglycolic acid were synthetized via hydrothermal route and tested in a solar radiation-based dye photodegradation process. These nanoparticles were characterized, and the findings revealed that thioglycolic acid was a strong capping ligand for the generation of sulfur zinc nanoparticles with a specific surface area of 36.82 m2/g and 7.15 nm average nanocrystal size. The cubic and wurtzite phases of these nanoparticles were confirmed via X-ray diffraction. The quantum confinement effect caused a larger energy band gap and a blue shift in the absorbance band of these nanoparticles in contrast to the bulk sulfur zinc. The improved adsorption effectiveness of these nanoparticles was proved to remove methylene blue from aqueous solutions. They can remove 30.92 mg/g of tested dye molecule. To understand the synergy between adsorption and photocatalysis, these nanoparticles were used to analyze the dye adsorption prior to the photodegradation via the experimental measurement of isotherms and kinetics. The rationalization of the dye adsorption on these nanoparticles was performed with calculated statistical physics parameters including the estimation of dye – nanoparticles adsorption energy. Dye molecules and nanoparticles surface exhibited physical interactions with adsorption energies of 25.92–23.31 kJ/mol. The sunlight-based photocatalytic activity of these nanoparticles demonstrated 91.1% dye degradation efficiency in 180 min. Overall, the photocatalytic efficiency remained almost unchanged after five consecutive degradation cycles with a methylene blue degradation of 88 ± 3%. These results indicate that these sustainable nanoparticles can be applied in the cleaning of industrial and urban fluids polluted by hazardous organic compounds like dye molecules.

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“…note that, under ideal sunlight conditions, UV radiation only makes up 5% (50 W/m 2 ) of the total solar ux received at the earth surface (Ouni et al 2023b).…”

Section: Sunlight-based Photocatalytic Degradation Experimentsmentioning

confidence: 99%

Section: Dye Adsorption Kineticsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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confidence: 99%

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