Investigation on photocatalytic activity of ZnS/NiFe2O4 NCs under sunlight irradiation via a novel two-step synthesis approach

Dharmaraja, C.; Nicholas, P. Emmanuel; Ramya, P.; Premkumar, I. J. Isaac; Vijayan, Veena; Senthilkumar, N.

doi:10.1016/j.inoche.2021.108481

Cited by 21 publications

(6 citation statements)

References 31 publications

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“…When the rate constants of the produced material were examined, it was found that it followed the Langmuir-Hinshelwood model rst-order kinetics [7].…”

Section: Photocatalytic Degradation Studiesmentioning

confidence: 99%

“…Therefore, interest in the photocatalysis method has increased. Semiconductor heterogeneous photocatalysis method, one of these wastewater treatment techniques, is accepted amongst the most promising and e cient approach for the removal and separation of organic pollutants from wastewater because it is suitable for the use of solar energy as a power source and is environmentally friendly [7]. Speci cally, photocatalysis using visible light as a perennial energy source, non-marking green technology with wide applicability has emerged as an option [8].…”

Section: Introductionmentioning

confidence: 99%

“…Several semiconductor photocatalysts have proven suitable for the removal of non-removable pollutants in wastewater such as TiO 2 , ZnO, CdO, WO 3 , Fe 2 O 3 , CdS, CdSe and ZnS [7,9,10]. Poor stability in photocatalysts can lead to low e ciency due to some of their unique properties such as simple assembly, high recombination rate and wide band gap.…”

Section: Introductionmentioning

confidence: 99%

“…The use of ZnS as a photocatalyst can be preferred among semiconductor materials, with a wide band gap of 3.6 eV, good holding time, high light absorption, high electronic mobility, non-toxicity, nondegradation in interaction with heat and low cost. ZnS semiconductor materials can be used with different morphological properties in combination with others to increase photocatalytic properties [1,7,8,11].…”

Section: Introductionmentioning

confidence: 99%

“…However, these magnetic materials are known to exhibit lower photocatalytic activity under visible light illumination. Considering the individual properties of CdSe, ZnS and Fe 2 O 3 , the combination of these three materials can facilitate the elimination of waste dyestuffs [7]. The suppression of the recombination of electrons and holes by trapping electrons from the conduction band of γ-Fe 2 O 3 with quantum dots may act as an e cient photocatalyst.…”

Section: Introductionmentioning

confidence: 99%

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PEGylated emissive CdSe/ZnS@Fe2O3 nanocrystals for the UV mediated superior degradation of methylene blue

Ekici

Mutlugün

2022

Preprint

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This work focuses on the degradation of methylene blue (MB), which has a toxic effect in water and cannot be completely removed by classical methods, i.e. under UV light. Photocatalytic nanoparticles produced in heterogeneous structure were carried out by examining the interaction of MB with our pegylated core-shell CdSe/ZnS@Fe2O3 nanocrystals under UV light in a dye-stuff solution medium. In our study CdSe/ZnS@Fe2O3 nanoparticles were synthesized and then, PEG has been attached to the surface upon careful surface engineering. The amount and time of catalyst upon degradation of MB under these conditions were investigated. The PEG:(CdSe/ZnS@Fe2O3) nanocomposite enable the degradation of MB with a photocataliytic degradation rate of 16,5*10− 3 min-1 in 30 mins, which is found to be more than 4,9 times when compared with the pegylated bare Fe2O3. It is worth noting that further optimizing the PEG:(CdSe/ZnS@Fe2O3) and the MB ratio the reaction rate reaches the maximum level of 63,12*10− 3 min-1. The PEG-(CdSe/ZnS@Fe2O3) nanocomposite exhibited a photocatalytic degradation efficiency of 84,2% within 30 min for methylene blue under visible light.

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“…When the rate constants of the produced material were examined, it was found that it followed the Langmuir-Hinshelwood model rst-order kinetics [7].…”

Section: Photocatalytic Degradation Studiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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