Solid state synthesis of cadmium doped ZnS with excellent photocatalytic activity and enhanced visible light emission

Suganya, S.; Jothibas, M.; Jeyakumar, S. Johnson

doi:10.1007/s10854-019-01113-6

Cited by 14 publications

(5 citation statements)

References 38 publications

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“…It is clear that pure ZnS can be a good candidate for dye degradation under sunlight irradiation. This material offer additional advantages such as it does not use expensive organic moieties and toxic products in the catalyst preparation together with a higher rate of decolorization under UV and sunlight irradiations (Gajendiran et al 2020;Samanta et al 2018;Pathania et al 2016;Suganya et al 2019;Samanta et al 2020;Dake et al 2020;Ramki et al 2020;Matras-Postołek et al 2019). These results are encouraging for the application of these NCs to degrade organic compounds dissolved in wastewater at great scale in the industrial sector.…”

Section: Toward An Industrial Efficient Solar Activated Nanocatalystmentioning

confidence: 99%

Fast and effective catalytic degradation of an organic dye by eco-friendly capped ZnS and Mn-doped ZnS nanocrystals

Ouni

Mohamed

Chaaben

et al. 2022

Environ Sci Pollut Res

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Undoped and Mn-doped ZnS nanocrystals encapsulated with thioglycolic acid were synthetized and characterized with different techniques, and finally tested in the photodegradation of a methyl orange in aqueous solution under UV and sunlight irradiations.FTIR and X-ray diffraction results confirmed the functionalization of these nanocrystals surface by thioglycolic acid and the formation of crystalline structures of ZnS and Mn-doped ZnS with cubic and hexagonal phases. Calculated average size of ZnS nanocrystals was in the range of 2 -3 nm. It was observed a blue shift of the absorbance threshold and the estimated bandgap energies were higher than that of Bulk ZnS thus confirming the quantum confinement effect of charge carriers. Photoluminescence spectra of ZnS nanocrystals exhibited emission in the range of 410-490 nm and the appearance of an additional emission band around 580 nm (2.13eV) connected to the 4 𝑇1→ 6 𝐴1 transition of the Mn 2+ ions.Photodegradation of methylene orange with undoped and Mn-doped ZnS-TGA nanocrystals was investigated. Dye adsorption prior to photocatalysis using nanocrystals was studied via kinetic experiments and statistical physics models. The maximum dye adsorption capacity on doped ZnS-TGA was ~ 26.98 mg/g. The adsorption kinetic was found to follow the pseudosecond-order kinetic model.According to the statistical physics results, the calculated adsorption energy was 22.47-23.47 kJ/mol and it showed that the dye adsorption was associated to the hydrogen interaction where the removal process was feasible and multimolecular. The photocatalytic activity of undoped ZnS nanoparticles under UV irradiation showed better efficiency than doped nanocrystals thus indicating that manganese doping generated a dropping of the photocatalytic degradation of the dye. Dye degradation efficiency of 81.37% using ZnS-TGA nanocrystals was achieved after 6 min, which indicated that ZnMnS-TGA nanocrystals may be considered as an alternative low cost and environmental friendly material for facing water pollution caused by organic compounds via photodegradation processes.

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Section: Toward An Industrial Efficient Solar Activated Nanocatalystmentioning

confidence: 99%

Fast and effective catalytic degradation of an organic dye by eco-friendly capped ZnS and Mn-doped ZnS nanocrystals

Ouni

Mohamed

Chaaben

et al. 2022

Environ Sci Pollut Res

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“…32, the pattern mostly leans towards the (111) direction, while the signals related to the (220) and (311) orientations are not as strong. 138 Cd : ZnO/ZnS core-shell QDs were created by Luo, Jian, and colleagues. The results showed that at Cd dopant levels less than 20%, a slight redshift in the PL spectra was visible, and the intensity increased sharply with increasing Cd concentration.…”

Section: Silver (Ag)-doped Znsmentioning

confidence: 99%

“…32 XRD patterns of pure and Cd : ZnS nanoparticles. 138 Fig. 33 XRD patterns of Mo-doped ZnS nanoparticles.…”

Section: Molybdenum (Mo)-doped Znsmentioning

confidence: 99%

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Cation exchange doping by transition and non-transition metals: embracing luminescence for band gap tunability in a ZnS lattice

Pandey,

Singh,

Kaundal

et al. 2024

New J. Chem.

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“…Several techniques such as chemical vapour deposition, wet chemical route, coprecipitation, solvothermal or hydrothermal processes, thermal decomposition method, radio frequency magnetron sputtering technique and solid state reaction method were used by many researchers to prepare ZnS NPs [19]. Among them the hydrothermal process, which is ecofriendly because of the use of water as a solvent and an inorganic salt as a catalyst for the reaction, appears very suitable due to its ease and high efficiency.…”

Section: J O U R N a L P R E -P R O O Fmentioning

confidence: 99%

Investigating photoluminescence properties of Ca-doped ZnS nanoparticles prepared via hydrothermal method

Messalti

El‐Ghozzi

Zambón

et al. 2021

Journal of Luminescence

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Solid state synthesis of cadmium doped ZnS with excellent photocatalytic activity and enhanced visible light emission

Cited by 14 publications

References 38 publications

Fast and effective catalytic degradation of an organic dye by eco-friendly capped ZnS and Mn-doped ZnS nanocrystals

Fast and effective catalytic degradation of an organic dye by eco-friendly capped ZnS and Mn-doped ZnS nanocrystals

Cation exchange doping by transition and non-transition metals: embracing luminescence for band gap tunability in a ZnS lattice

Investigating photoluminescence properties of Ca-doped ZnS nanoparticles prepared via hydrothermal method

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