Application of thiol capped ZnS quantum dots as a fluorescence probe for determination of tetracycline residues

Mili, Khawla; Hsine, Zouhour; Chevalier, Yves; Ledoux, Gilles; Mlika, R.

doi:10.1016/j.ssc.2022.115040

Cited by 8 publications

(7 citation statements)

References 74 publications

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“…Figure2displays the FTIR spectra where their results allowed to identify the stabilizing process utilizing thioglycolic acid molecules. The absorption band range of 2550-2670 cm − 1 indicated the presence of SH bonds in TGA ligands(Mili et al 2023). The breaking of this bond and the corresponding loading of thiol molecules on NPs surface were associated with the changes observed for this band in the nanoparticle spectra.…”

mentioning

confidence: 90%

“…Zn-S stretching vibrations were identi ed with the absorption band at 563 cm − 1 (Ouni et al2022). 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).…”

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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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confidence: 90%

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confidence: 99%

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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“…The ZnS QDs have been prepared in the presence of thiol capping agent (TGA) in accordance with procedures reported in the literature with minor modifications [32,33]. The Zn 2+ /S 2− /TGA molar ratio of 1/0.5/2.5 was used, corresponding to the stoichiometric requirement generating adequate coverage and full saturation of the dangling bonds on the surface of the QDs with the thiol groups.…”

Section: Preparation Of Tga-capped Zns Quantum Dotsmentioning

confidence: 99%

“…Several fluorescent sensors have been used for the detection of TCy, however their major problem is that the detection takes place in acidic or basic medias which limit their real application in biological fluids. As a few examples, Zhang et al have developed a fluorescent sensor based on silver nanoclusters (Ag NCs) for the detection of TCy at pH = 5 [33]. Guo et al used copper doped carbon dots (Cu-CDs) as fluorescence probes for detection of TCy at pH = 4 [34].…”

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confidence: 99%

Application of Thiol Capped Zns Quantum Dots as a Fluorescence Probe for Determination of Tetracycline Residues

Mili¹,

Hsine²,

Chevalier³

et al. 2022

SSRN Journal

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“…Thus far, more and more surface-coating Fe 3 O 4 nanoparticles have been synthesized to improve the biocompatibility and multi-function. Zinc sulfide (ZnS) is one of the most commonly used as a solid coat due to its good thermal stability, high electric mobility, excellent transport properties, and the presence of polar surfaces [19,20]. Many new nanomaterials combined ZnS with various nanostructures and have been used in a wide range of applications because of their unique physical properties.…”

Section: Introductionmentioning

confidence: 99%

A Multifunctional Magnetic Fluorescent Nanoprobe for Copper(II) Using ZnS-DL-Mercaptosuccinic Acid-Modified Fe3O4 Nanocomposites

Xu,

Chen,

Chen

et al. 2024

Coatings

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Cu2+ has increasingly become a great threat to the natural environment and human health due to its abundant content and wide application in various industries. DL-Mercaptosuccinic acid and ZnS-modified Fe3O4 nanocomposites were designed, synthesized, and applied in the determination of Cu2+. The prepared nanocomposites were characterized by scanning electron microscopy (SEM), transmission electron microscopes (TEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffractometer (XRD), X-ray photoelectron spectroscopy (XPS), vibrating sample magnetometer (VSM), and thermogravimetric analyzer (TG). The magnetic fluorescent nanoprobe exhibited highly selective and sensitive fluorescence-quenching characteristics with Cu2+ ions. The fluorescence detection linear range was 0–400 μM, with the detection limit being 0.489 μM. In addition, the magnetic fluorescent nanoprobe exhibited a high adsorption and removal rate for Cu2+. It had been successfully applied to detect Cu2+ in real water samples with a satisfactory recovery rate. The magnetic fluorescent nanoprobe could simultaneously realize the functions of enrichment, quantitative detection, and separation, reduce the pollution of copper ions and probes, and establish an environment-friendly detection method. Consequently, the magnetic fluorescent nanoprobe offered a new pathway for the removal and detection of not only Cu2+ but also other heavy metal ions in water.

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Application of thiol capped ZnS quantum dots as a fluorescence probe for determination of tetracycline residues

Cited by 8 publications

References 74 publications

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

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

Application of Thiol Capped Zns Quantum Dots as a Fluorescence Probe for Determination of Tetracycline Residues

A Multifunctional Magnetic Fluorescent Nanoprobe for Copper(II) Using ZnS-DL-Mercaptosuccinic Acid-Modified Fe3O4 Nanocomposites

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