Pollutant degradation of different organic dyes using the photocatalytic activity of ZnO@ZnS nanocomposite materials

Sanad, Mohamed Fathi; Shalan, Ahmed Esmail; Bazid, Shreen Magdy; Abdelbasir, Sabah M.

doi:10.1016/j.jece.2018.05.035

Cited by 71 publications

(23 citation statements)

References 34 publications

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“…With the same procedure as discussed in our previous related studies, NAD-dependent mitochondrial dehydrogenase of viable cells is used to cleave the MTT (3-(4, 5-dimethyl thiazol-2yl)−2, 5-diphenyl tetrazolium bromide) to form a quantifiable purple formazan product [ 34 , 35 , 36 , 37 , 38 ]. We can observe the proportional relationship between the attained formazan production and viable cell number.…”

Section: Methodsmentioning

confidence: 99%

RETRACTED: Biogenic synthesis and cytotoxic effects of silver nanoparticles mediated by white rot fungi

Gudikandula

Srileka

Charya

et al. 2021

Heliyon

Self Cite

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Silver nanoparticles (AgNPs) were successfully synthesized using silver nitrate via the biological route using the culture filtrate of Ganoderma enigmaticum as well as Trametes ljubarskyi white rot fungi materials at room temperature. The proposed synthetic technique was applied for the first time for AgNPs preparation via the biological route through a low-cost pathway, which considered as an adequate direction of preparation compared to the commercial methods. This study reports the in vitro cytotoxic effect of biologically synthesized AgNPs in disposing of the human lung cancer cell line (A549) and human breast cancer cell (MCF-7) by using a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay. In addition, the viability of the tested cell lines was tested after treatment for 24 h in the presence of the prepared nanoparticles. The obtained results indicated the reduced viability of cancer cell lines with improving concentrations of AgNPs (40–120 μg/mL) at 24 h. Furthermore, at 120 μg/mL concentration, the fungal nanoparticles showed substantial cytotoxic effects toward the treated cells. Consequently, the results designated that the biologically synthesized silver nanoparticles have effective behavior for treating A549 and MCF-7 cancer cells from the laboratory experiment approach; however, additional studies are required to validate these results in vivo models as anticancer agents depending on their cytotoxic activity.

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Section: Methodsmentioning

confidence: 99%

RETRACTED: Biogenic synthesis and cytotoxic effects of silver nanoparticles mediated by white rot fungi

Gudikandula

Srileka

Charya

et al. 2021

Heliyon

Self Cite

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“…This implies that the change in band-gap is compensated by the higher surface area (and thus easy pollutant and light accessibility) of the Ag-decorated ZnO micro/nanoferns. Moreover, it is worth emphasizing that the knor of ZnO@ZnS core@shell bioinspired micro/nanoferns, listed in Table 2, are similar or even higher than that of the most competitive stateof-the-art ZnO-based photocatalysts (Tables S1-S3) [23,29,34,[67][68][69][70][71][72][73][74][75][76][77][78][79][80][81][82][83][84][85][86]. Therefore, in relation to the photocatalytic activity, the ZnO@ZnS core@shell bioinspired fern-shape microleaves exhibit an outstanding photocatalyzed remediation for the three different studied pollutants with a catalytic performance rivaling with doped ZnO nano-catalysts.…”

Section: Photocatalystmentioning

confidence: 99%

Highly active ZnO-based biomimetic fern-like microleaves for photocatalytic water decontamination using sunlight

Serrà

Zhang

Sepúlveda

et al. 2019

Applied Catalysis B: Environmental

110

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“…On the one hand, two individual photocatalysts could obtain two-step excitation by an electron transfer mediator 15 . Sulphides are good photocatalyst candidates, and many wide band gap semiconductors (ZnS 16 , CdS 17 , and ZnSe 18 ) were utilised to synthesize ZnO-based photocatalysts. ZnS attracted more attention because it is nontoxic and chemically stable and has wide band gap (3.72 eV) characters 19 .…”

Section: Introductionmentioning

confidence: 99%

Synergistic adsorption-photocatalytic degradation effect and norfloxacin mechanism of ZnO/ZnS@BC under UV-light irradiation

Wen

Wang

et al. 2020

Sci Rep

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Norfloxacin (NOF) is an environmentally harmful and ubiquitous aquatic pollutant with extensive production and application. In this study, a novel composition named carbon-based composite photocatalytic material of zinc oxide and zinc sulphide (ZnO/ZnS@BC) was successfully obtained by the impregnation-roasting method to remove NOF under UV-light. Scanning electron microscopy, X-ray photoelectron spectroscopy, transmission electron microscopy and energy dispersive spectrometer characterised the composition. ZnO/ZnS was successfully decorated on the surface of biochar (BC). The pH, the ZnSO 4 /PS ratio, and ions and quenchers, were investigated. High removal efficiency was obtained with a pH of 7 and a ZnSO 4 /PS ratio of 1:1, and the removal ratio of NOF reached 95% within three hours; the adsorption and degradation ratios reached 46% and 49%, respectively. Fe 2+ promoted the degradation of NOF, whereas other ions inhibited it, with NO 3 − showing the strongest inhibitory effect. Three reactive species (tert-butanol, quinone, and ammonium oxala) were identified in the catalytic system. The decreasing order of the contribution of each reactive species was: O 2 − > ·OH − > h + . Additionally, a recycling experiment demonstrated the stability of the catalyst; the catalytic degradation ratio of NOF reached 78% after five successive runs. Therefore, ZnO/ZnS@BC possessed strong adsorption capacity and high ultraviolet photocatalysis ability.

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Pollutant degradation of different organic dyes using the photocatalytic activity of ZnO@ZnS nanocomposite materials

Cited by 71 publications

References 34 publications

RETRACTED: Biogenic synthesis and cytotoxic effects of silver nanoparticles mediated by white rot fungi

RETRACTED: Biogenic synthesis and cytotoxic effects of silver nanoparticles mediated by white rot fungi

Highly active ZnO-based biomimetic fern-like microleaves for photocatalytic water decontamination using sunlight

Synergistic adsorption-photocatalytic degradation effect and norfloxacin mechanism of ZnO/ZnS@BC under UV-light irradiation

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