RETRACTED ARTICLE: Facile approach to prepare ZnO@SiO2 nanomaterials for photocatalytic degradation of some organic pollutant models

Abdel-Messih, M. F.; Shalan, Ahmed Esmail; Sanad, Mohamed Fathi; Ahmed, M.A.

doi:10.1007/s10854-019-01798-9

Cited by 51 publications

(22 citation statements)

References 31 publications

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“…During the past few years, the research on metal oxides, particularly zinc oxide (ZnO), has remarkably increased and gained enormous interest from researchers in chemistry, materials science, physics, medical, textiles and many other fields of science [1][2][3][4][5][6][7][8][9][10][11][12]. ZnO belongs to a family of metal oxide semiconductors.…”

Section: Introductionmentioning

confidence: 99%

One-Pot Sonochemical Synthesis of ZnO Nanoparticles for Photocatalytic Applications, Modelling and Optimization

et al. 2019

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This present study proposed a successful one pot synthesis of zinc oxide nanoparticles (ZnO NPs) and their optimisation for photocatalytic applications. Zinc chloride (ZnCl2) and sodium hydroxide (NaOH) were selected as chemical reagents for the proposed study. The design of this experiment was based on the reagents’ amounts and the ultrasonic irradiations’ time. The results regarding scanning electron microscopy (SEM), X-ray diffraction (XRD) and Raman spectroscopy confirmed the presence of ZnO NPs with pure hexagonal wurtzite crystalline structure in all synthesised samples. Photocatalytic activity of the developed samples was evaluated against methylene blue dye solution. The rapid removal of methylene blue dye indicated the higher photocatalytic activity of the developed samples than untreated samples. Moreover, central composite design was utilised for statistical analysis regarding the obtained results. A mathematical model for the optimisation of input conditions was designed to predict the results at any given point. The role of crystallisation on the photocatalytic performance of developed samples was discussed in detail in this novel study.

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Section: Introductionmentioning

confidence: 99%

One-Pot Sonochemical Synthesis of ZnO Nanoparticles for Photocatalytic Applications, Modelling and Optimization

et al. 2019

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“…The presence of CA nanofiber membranes indicate the suitable photocatalytic performance of the Ag-CdSe/GO@CA sample as the nanofiber membranes lead to the excrescent spreading of Ag-CdSe/GO on the surface, which could improve the heterojunction structure, resulting in enhanced photocatalytic activity. 38 − 40 …”

Section: Resultsmentioning

confidence: 99%

“…Figure a,b demonstrates the absorption photo–removal spectrum of Ag-CdSe/GO and Ag-CdSe/GO@CA, respectively, over MG dye at different illumination time periods. The presence of CA nanofiber membranes indicate the suitable photocatalytic performance of the Ag-CdSe/GO@CA sample as the nanofiber membranes lead to the excrescent spreading of Ag-CdSe/GO on the surface, which could improve the heterojunction structure, resulting in enhanced photocatalytic activity. − …”

Section: Resultsmentioning

confidence: 99%

Silver-Doped Cadmium Selenide/Graphene Oxide-Filled Cellulose Acetate Nanocomposites for Photocatalytic Degradation of Malachite Green toward Wastewater Treatment

et al. 2021

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Silver-doped cadmium selenide/graphene oxide (GO) (Ag-CdSe/GO) nanocomposites have been synthesized, loaded in cellulose acetate (CA) to form Ag-CdSe/GO@CA heterostructure nanofibers, and characterized in terms of structural, morphological, photocatalytic properties, among others. The photocatalytic degradation of malachite green (MG) was estimated using cadmium selenide-filled CA (CdSe@CA), silver-doped cadmium selenide-filled CA (Ag-CdSe@CA), cadmium selenide/GO-filled CA (CdSe/GO@CA), and silver-doped cadmium selenide/GO-filled CA (Ag-CdSe/GO@CA) nanocomposite materials. The Ag-CdSe/GO@CA nanocomposites exhibit and retain an enhanced photocatalytic activity for the degradation of MG dye. This amended performance is associated with the multifunctional supporting impacts of GO, Ag, and CA on the composite structure and properties. The superior photocatalytic activity is related to the fact that both Ag and GO can act as electron acceptors that boost the separation efficiency of photogenerated carriers and the loading of the combined nanocomposite (Ag-CdSe@GO) on CA nanofibers, which can augment the adsorption of electrons and holes and facilitate the movement of carriers. The stability of Ag-CdSe/GO@CA nanocomposite photocatalysts demonstrates suitable results even after five recycles. This study establishes an advanced semiconductor-based hybrid nanocomposite material for efficient photocatalytic degradation of organic dyes.

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“…Besides, the recombination of electrons and holes on ZnO also lowers its photocatalytic activities. The modifications achieved by doping of metals, 3–9 rare earth metals, 10–12 non-metal elements, 13,14 oxides, 15–19 and carbon-based materials [graphene, graphene oxide (GO), or reduced graphene oxide (rGO)], 20–22 or co-doping of both metal and non-metal elements to form composite materials 23,24 have been studied for years. The obtained materials lowered the band gap and inhibited the recombination of electrons and holes, which possibly promoted the photocatalytic activity of objective materials.…”

Section: Introductionmentioning

confidence: 99%

One-pot hydrothermal preparation of capsule-like nanocomposites of C/Ce-co-doped ZnO supported on graphene to enhance photodegradation

Luu

Nguyen

et al. 2023

New J. Chem.

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RETRACTED ARTICLE: Facile approach to prepare ZnO@SiO2 nanomaterials for photocatalytic degradation of some organic pollutant models

Cited by 51 publications

References 31 publications

One-Pot Sonochemical Synthesis of ZnO Nanoparticles for Photocatalytic Applications, Modelling and Optimization

One-Pot Sonochemical Synthesis of ZnO Nanoparticles for Photocatalytic Applications, Modelling and Optimization

Silver-Doped Cadmium Selenide/Graphene Oxide-Filled Cellulose Acetate Nanocomposites for Photocatalytic Degradation of Malachite Green toward Wastewater Treatment

One-pot hydrothermal preparation of capsule-like nanocomposites of C/Ce-co-doped ZnO supported on graphene to enhance photodegradation

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