Novel NiS/Ag2MoO4 heterostructure nanocomposite: Synthesis, characterization and superior antibacterial and enhanced photocatalytic activity

Kokilavani, S.; Al-Kheraif, Abdulaziz A.; Thomas, Ajith M.; Syed, Asad; Elgorban, Abdallah M.; Raju, Lija L.; Das, Arunava; Khan, S. Sudheer

doi:10.1016/j.physe.2021.114767

Cited by 26 publications

(10 citation statements)

References 41 publications

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“…UV−Vis by DRS. The optical properties through the UV−vis spectra by DRS are illustrated in Figure 2a−d. On the basis of the literature, 21,30 a high photon absorption is expected by silver molybdate in the UV region, agreeing with the DSR spectrum, as shown in Figure 2a. However, the illustrated spectrum for β-Ag 1.94 Cu 0.06 MoO 4 shows strong absorption with a maximum reflectance near 600 nm, attributed to the d− d transitions of the Cu 3d orbitals.…”

Section: Results Andsupporting

confidence: 87%

“…20 x clusters. 21 The PL emission in the blue region (E photon = 2.7 eV) is related to the indirect electronic transitions from CB to CB, 18 while the PL emission in the red region is related to the deep defects in the forbidden zone. 32 Therefore, the replacement of Ag + by Cu 2+ in the silver molybdates induces a decrease of the deep defects in the structure.…”

Section: Results Andmentioning

confidence: 99%

“…β-Ag 2 MoO 4 has aroused great interest because of its good chemical stability at high temperatures, in addition to presenting a range of applications in different fields including energy storage, 18 antimicrobial agents, 1,2 photocatalysis, 19,20 and PL. 21,22 However, β-Ag 2 MoO 4 has an effective photon absorption in the ultraviolet region, which is limited to several photonics applications. 4,5 For this reason, the insertion of dopants on these materials such as rare-earth metals have been extensively studied.…”

Section: Introductionmentioning

confidence: 99%

“…Molybdenum oxide compounds are a well-known semiconductor family that has been investigated for several applications such as catalysts, − sensors, , photocatalysts, , microbial agents, , and photoluminescence (PL). − Silver molybdate (Ag 2 MoO 4 ) is an important member of this family and has two polymorphs: α-Ag 2 MoO 4 with a tetragonal structure and α-Ag 2 MoO 4 , which exhibits a cubic spinel-like structure. ,, Therefore, stick, flower, and potato morphologies have been synthesized for these materials. β-Ag 2 MoO 4 has aroused great interest because of its good chemical stability at high temperatures, in addition to presenting a range of applications in different fields including energy storage, antimicrobial agents, , photocatalysis, , and PL. , However, β-Ag 2 MoO 4 has an effective photon absorption in the ultraviolet region, which is limited to several photonics applications. , For this reason, the insertion of dopants on these materials such as rare-earth metals have been extensively studied . Although the rare-earth metals are attractive candidates as dopants, a reduction in the availability coupled with demand has led to increased prices for these compounds.…”

Section: Introductionmentioning

confidence: 99%

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Rietveld Refinement, Morphology, and Optical and Photoluminescence Properties of a β-Ag_1.94Cu_0.06MoO₄ Solid Solution

et al. 2022

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Corner-truncated cubic β-Ag 1.94 Cu 0.06 MoO 4 microcrystals were synthesized using the hydrothermal method. These were investigated by X-ray diffraction, confirming obtention of the spinel structure Fd3̅ m. Through Raman spectroscopy are confirmed all modes for the point group of O h 7. The E gap shows a decrease of the band gap from 3.20 to 3.07 eV, with reduction of the conduction band occurring from −0.20 eV (β-Ag 2 MoO 4 ) to −0.13 eV (β-Ag 1.94 Cu 0.06 MoO 4 ), suggesting a p-type behavior for the Cu 2+ ion. The fieldemission scanning electron microscopy images confirm the morphological changes for β-Ag 2 MoO 4 , where potato-like microcrystals were found. Meanwhile, corner-truncated cubic microcrystals for β-Ag 1.94 Cu 0.06 MoO 4 . The photoluminescence (PL) spectrum confirms the increase in the PL emission for β-Ag 1.94 Cu 0.06 MoO 4 , with suppression of the deep defects occurring in the structure caused by oxygen and silver atoms. In contrast, the green region is intensified because of distortions of the Ag−O and Mo−O bonds. Therefore, the β-Ag 1.94 Cu 0.06 MoO 4 solid solution has PL emission with CCT (4510 K) and CIE coordinates (x = 0.372 and y = 0.433), which could be interesting properties for applications as light-emitting diodes.

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Section: Results Andsupporting

confidence: 87%

Section: Results Andmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Rietveld Refinement, Morphology, and Optical and Photoluminescence Properties of a β-Ag_1.94Cu_0.06MoO₄ Solid Solution

et al. 2022

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“…The assembly for various composites for the photocatalytic degradation of pollutants has also gained much attention during the last few years [7,8]. Different photocatalysts, such as pristine TiO 2 , WO 3 , CdS, Fe 2 O 3 , ZnS or TiO 2 composites, N-Doped ZnO, Ag-based compounds and their composites, can be used for the removal of contaminants owing to their outstanding properties [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and environmental remediation studies of Bi-substituted Li-Co spinel ferrites

Haider

Agboola

Al-Khalli

et al. 2021

Journal of Taibah University for Science

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Photocatalytic ability of Lithium-Cobalt ferrites was improved by doping with Bi. For the synthesis of different compositions of Bi-doped Li-Co Ferrites, the Micro-Emulsion method was used. X-ray diffraction (XRD) and Fourier transform infrared (FTIR) and Scanning Electron Microscopy (SEM) analyses confirmed its spinel structure and morphology. Bi-substituted Li-Co ferrites exhibit 93.8% and 83.9% degradation of methylene blue and crystal violet, respectively. While using scavenger this value of degradation of crystal violet exceeds up to 98.5%. The rate constants of LiCo 0.5 Bi 0.4 Fe 1.6 O 4 for methylene blue (MB) and crystal violet (CV) are 0.0203 and 0.01615 min −1 , respectively. The band gap energy value calculated using tauc plot is 2.70 eV and 3.95Ev for Li-Co ferrites and Bi-doped Li-Co ferrites, respectively. Electrochemical impedance spectroscopy (EIS) studies confirmed that the doping of Bi in Li-Co spinel ferrites enhances its conductance. The use of these ferrites for photocatalytic degradation is more beneficial because they can be easily separable afterwards due to their magnetic nature which is confirmed by studying the re-usability of the as-synthesized samples. Highlights• Li-Co ferrites and Bi-substituted Li-Co ferrites were synthesized by the micro-emulsion method. • XRD and FTIR confirmed their spinel structural features.• The prepared catalyst successfully degraded the MB ( > 90%) and CV ( > 80%).• Antibacterial studies of as-synthesized samples were also done for S. aureus (Positive Strain) and P. aeruginosa (Negative Strain) microorganisms.

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Mechanistic Insights and Emerging Trends in Photocatalytic Dye Degradation for Wastewater Treatment

Tak,

Grewal,

Shreya

et al. 2024

Chem Eng & Technol

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This review explores advancements, challenges, and considerations in photocatalytic dye degradation for sustainable wastewater treatment. It highlights smart photocatalyst design, visible‐light‐responsive materials, and co‐catalyst engineering, which enhance system efficacy. Despite environmental concerns, the eco‐friendly aspects of photocatalysis offer a promising alternative to traditional methods. Future perspectives emphasize nanotechnology's role in developing effective photocatalysts and integrating visible‐light and solar‐driven systems to meet sustainability goals. Efforts in co‐catalyst engineering and reactor design aim to optimize processes, addressing kinetic and scalability challenges, while economic research focuses on reducing costs to improve competitiveness.

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Novel NiS/Ag2MoO4 heterostructure nanocomposite: Synthesis, characterization and superior antibacterial and enhanced photocatalytic activity

Cited by 26 publications

References 41 publications

Rietveld Refinement, Morphology, and Optical and Photoluminescence Properties of a β-Ag_1.94Cu_0.06MoO₄ Solid Solution

Rietveld Refinement, Morphology, and Optical and Photoluminescence Properties of a β-Ag_1.94Cu_0.06MoO₄ Solid Solution

Synthesis, characterization and environmental remediation studies of Bi-substituted Li-Co spinel ferrites

Mechanistic Insights and Emerging Trends in Photocatalytic Dye Degradation for Wastewater Treatment

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Novel NiS/Ag2MoO4 heterostructure nanocomposite: Synthesis, characterization and superior antibacterial and enhanced photocatalytic activity

Cited by 26 publications

References 41 publications

Rietveld Refinement, Morphology, and Optical and Photoluminescence Properties of a β-Ag1.94Cu0.06MoO4 Solid Solution

Rietveld Refinement, Morphology, and Optical and Photoluminescence Properties of a β-Ag1.94Cu0.06MoO4 Solid Solution

Synthesis, characterization and environmental remediation studies of Bi-substituted Li-Co spinel ferrites

Mechanistic Insights and Emerging Trends in Photocatalytic Dye Degradation for Wastewater Treatment

Contact Info

Product

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Rietveld Refinement, Morphology, and Optical and Photoluminescence Properties of a β-Ag_1.94Cu_0.06MoO₄ Solid Solution

Rietveld Refinement, Morphology, and Optical and Photoluminescence Properties of a β-Ag_1.94Cu_0.06MoO₄ Solid Solution