Effect of Vanadium doping on optoelectronic and magnetic properties of wurtzite ZnS crystal

Khan, Muhammad Sheraz; Shi, Lei; Zou, B. S.; Ullah, Hamid

doi:10.1016/j.ijleo.2019.164162

Cited by 19 publications

(9 citation statements)

References 21 publications

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“…This analysis was conducted based on the data presented in Figure 6b. Consistent with prior findings, the results indicate that the In 2 S 3 , ZnIn 2 S 4 , and ZnS bandgaps were measured to be 2.05 eV, 2.82 eV, and 3.32 eV, respectively [25,51,52].…”

Section: Resultssupporting

confidence: 89%

Rapid Microwave-Assisted Synthesis of ZnIn2S4 Nanosheets for Highly Efficient Photocatalytic Hydrogen Production

2023

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In this study, a facile and rapid microwave-assisted synthesis method was used to synthesize In2S3 nanosheets, ZnS nanosheets, and ZnIn2S4 nanosheets with sulfur vacancies. The two-dimensional semiconductor photocatalysts of ZnIn2S4 nanosheets were characterized by XRD, FESEM, BET, TEM, XPS, UV–vis diffuse reflectance, and PL spectroscopy. The ZnIn2S4 with sulfur vacancies exhibited an evident energy bandgap value of 2.82 eV, as determined by UV–visible diffuse reflectance spectroscopy, and its energy band diagram was obtained through the combination of XPS and energy bandgap values. ZnIn2S4 nanosheets exhibited about 33.3 and 16.6 times higher photocatalytic hydrogen production than In2S3 nanosheets and ZnS nanosheets, respectively, under visible-light irradiation. Various factors, including materials, sacrificial reagents, and pH values, were used to evaluate the influence of ZnIn2S4 nanosheets on photocatalytic hydrogen production. In addition, the ZnIn2S4 nanosheets revealed the highest photocatalytic hydrogen production from seawater, which was about 209.4 and 106.7 times higher than that of In2S3 nanosheets and ZnS nanosheets, respectively. The presence of sulfur vacancies in ZnIn2S4 nanosheets offers promising opportunities for developing highly efficient and stable photocatalysts for photocatalytic hydrogen production from seawater under visible-light irradiation.

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Section: Resultssupporting

confidence: 89%

Rapid Microwave-Assisted Synthesis of ZnIn2S4 Nanosheets for Highly Efficient Photocatalytic Hydrogen Production

2023

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“…UV-Visible Analysis. Zinc sulfide NPs have attracted great attention because of their distinct optical properties with broad applications in optoelectronic devices and biomedical science [44,45]. As seen in Figure 5(a), the recorded UV-vis spectra revealed an absorption decrease as wavelength increases, showing an absorption edge at about 331 nm; however, the absorption value is exclusively dependent on various factors, including the structure of the material, the size of the NPs and the defects in grain structure.…”

Section: Sem Analysismentioning

confidence: 99%

Garlic Extract-Mediated Synthesis of ZnS Nanoparticles: Structural, Optical, Antibacterial, and Hemolysis Studies

Alnehia

Al-Odayni

Al-Hammadi

et al. 2023

Journal of Nanomaterials

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The green synthesis of zinc sulfide nanoparticles (ZnS NPs)-mediated plant extract is gaining importance because of its simplicity, cost-effectiveness, and ecofriendly nature. In this work, ZnS NPs were synthesized using garlic extract as NPs facilitating agent, characterized by Fourier transform infrared, X-ray diffraction, scanning electron microscope, and UV–visible, then their antibacterial and hemocompatibility were assayed. Analysis revealed a cubic phase, 2.33 nm crystallite size, and a 3.75 eV optical bandgap. Bioactivity test against Staphylococcus aureus and Escherichia coli indicated dose-dependent potency closer to that of azithromycin standard drug and more efficient on S. aureus (Gram-positive) than E. coli (Gram-negative) bacteria. Biocompatibility test in terms of erythrocyte hemolysis, in reference to normal saline and water as minimal and maximal controls, confirmed nontoxic substance up to 100 μg/mL as the highest examined concentration and at which a lysis of 2.9% was detected. Therefore, it could be concluded that this biogenic method is effective in producing ZnS NPs with desirable properties for potential biomedical applications.

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“…Density functional theory calculations can provide valuable estimates of the thermodynamic stability with appreciable accuracy. To investigate the stability of Ti-doped CaS compound, the formation energies are computed according to the following expression [37]:…”

Section: -2-defect Formation Energymentioning

confidence: 99%

Theoretical Investigation of Structural, Electronic Properties and Half-Metallic Ferromagnetism in Ca1−xTixS ternary alloys

Ziati

Ez‐Zahraouy

2021

J Supercond Nov Magn

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In this research paper, we investigated the structural, electronic, and magnetic features of titanium atom substituting calcium atom in rock-salt structure of CaS to explore the new dilute magnetic semiconductor compounds Ca 1−x Ti x S. The calculations are carried out using the full potential-linearized augmented plane wave (FP-LAPW) method based on spin-polarized density functional theory (SP-DFT), implemented in WIEN2k code. The exchange and correlation potential are described by the generalized gradient approximation (PBE-GGA) and Tran-Balaha modified Becke-Johnson exchange potential (TB − mBJ). The stability of Ca 1−x Ti x S ternary alloys in ferromagnetic state is provided by the total energy released from the optimized structures and defect formation energies. The classical model of Heisenberg is employed to estimate Curie temperature of these compounds. It is found that the room temperature ferromagnetism achieved at low concentrations. The studied materials exhibit halfmetallic ferromagnetic demeanor. The half metallic gaps (GHM) are the extremely significant factors to consider for spintronic applications. The insertion of impurity significantly decreased the value of GHM due the broadening of Ti − 3d states in the gap of the minority spin. Furthermore, to evaluate the effects of the exchange splitting process, the p − d exchange splitting ΔE C , ΔE v and the exchange constants N 0⍺ , N 0β are predicted.

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Effect of Vanadium doping on optoelectronic and magnetic properties of wurtzite ZnS crystal

Cited by 19 publications

References 21 publications

Rapid Microwave-Assisted Synthesis of ZnIn2S4 Nanosheets for Highly Efficient Photocatalytic Hydrogen Production

Rapid Microwave-Assisted Synthesis of ZnIn2S4 Nanosheets for Highly Efficient Photocatalytic Hydrogen Production

Garlic Extract-Mediated Synthesis of ZnS Nanoparticles: Structural, Optical, Antibacterial, and Hemolysis Studies

Theoretical Investigation of Structural, Electronic Properties and Half-Metallic Ferromagnetism in Ca1−xTixS ternary alloys

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