Enhanced visible light driven photocatalytic and antibacterial activities of Ag2WO4 decorated ZnS nanocomposite

Kokilavani, S.; Al‐Farraj, Saleh A.; Thomas, Ajith M.; El‐Serehy, Hamed A.; Raju, Lija L.; Khan, S. Sudheer

doi:10.1016/j.ceramint.2021.01.163

Cited by 42 publications

(11 citation statements)

References 44 publications

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“…Comparatively, the conduction band (CB) position of BTO was more negative, and the valence band (VB) position of BO was more positive. Hence, according to the fact that pure BTO and BO both were p-type conductivity, it can be concluded that the produced BBTO composite was an interleaved type II and p–p heterojunction. ,,− Such energy band arrangement favored the separation of carriers in BBTO and promoted the photocatalytic efficiency. , …”

Section: Resultsmentioning

confidence: 96%

Preparation of Binary Type II α-Bi₂O₃/Bi₁₂TiO₂₀ Cross-Shaped Heterojunction with Enhanced Visible Light Photocatalytic Performance

Wang

Yan

Sun

et al. 2022

ACS Appl. Electron. Mater.

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The binary type II α-Bi 2 O 3 /Bi 12 TiO 20 heterojunction composite was successfully obtained by a simple hydrothermal process. The pH value and the Bi/Ti molar ratio were the key to form the α-Bi 2 O 3 /Bi 12 TiO 20 heterojunction. The α-Bi 2 O 3 nanobelts intertwined with the Bi 12 TiO 20 nanobelts to form a cross-shaped structure in the composite. The obvious red-shift can be detected in Raman spectra. UV−vis DRS also revealed that the effectively reduced band gap of the heterojunction composite led to sunlight absorption in a larger range. Meanwhile, the photocurrent responses and the EIS demonstrated that the combination of Bi 12 TiO 20 and α-Bi 2 O 3 significantly promoted the separation of photogenerated electron−hole pairs and suppressed their recombination, which was also confirmed by PL analysis. Furthermore, photocatalytic degradation experiments proved that the α-Bi 2 O 3 / Bi 12 TiO 20 heterojunction composite had excellent catalytic performance under visible light, whose rate constant value (k) was about 2.0 times that of pure α-Bi 2 O 3 and 4.5 times that of pure Bi 12 TiO 20 samples. A possible photocatalytic mechanism of α-Bi 2 O 3 /Bi 12 TiO 20 was also proposed based on p−p and type II heterojunction. It was concluded that the heterojunction structure markedly promoted the migration and separation of carriers to enhance its photoactivity.

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Section: Resultsmentioning

confidence: 96%

Preparation of Binary Type II α-Bi₂O₃/Bi₁₂TiO₂₀ Cross-Shaped Heterojunction with Enhanced Visible Light Photocatalytic Performance

Wang

Yan

Sun

et al. 2022

ACS Appl. Electron. Mater.

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“…68 Moreover, MB concentration inhibits the penetration of photons into the solution, thereby decreasing the reaction rate. 76,77 The highest degradation efficiency of 98.6 ± 1.13% was achieved for 25 ppm MB solution with a pseudo-first-order rate constant of 0.07101 min −1 (Table 4).…”

Section: Resultsmentioning

confidence: 99%

Development of high-performance bi-functional novel CdSnS₂ atom clusters for adsorption of rose Bengal and AOP-assisted degradation of methylene blue

Mishra

Gadore

Ahmaruzzaman

2023

Environ. Sci.: Water Res. Technol.

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“…Figures 8(g,h) and 9 (g,h) show the plots between ln(C o /C t ) and irradiation time (t). According to the first-order kinetic law: [ln(C o /C t ) = kt], from the slope of the straight line drawn using linear regression, the value of degradation rate constant (k) can be determined [47]. All these values show that Bi-doped LiCo 0.5 (Fe 2 O 4 ) exhibit phenomenal photocatalytic performance.…”

Section: Photocatalysismentioning

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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Enhanced visible light driven photocatalytic and antibacterial activities of Ag2WO4 decorated ZnS nanocomposite

Cited by 42 publications

References 44 publications

Preparation of Binary Type II α-Bi₂O₃/Bi₁₂TiO₂₀ Cross-Shaped Heterojunction with Enhanced Visible Light Photocatalytic Performance

Preparation of Binary Type II α-Bi₂O₃/Bi₁₂TiO₂₀ Cross-Shaped Heterojunction with Enhanced Visible Light Photocatalytic Performance

Development of high-performance bi-functional novel CdSnS₂ atom clusters for adsorption of rose Bengal and AOP-assisted degradation of methylene blue

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

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Enhanced visible light driven photocatalytic and antibacterial activities of Ag2WO4 decorated ZnS nanocomposite

Cited by 42 publications

References 44 publications

Preparation of Binary Type II α-Bi2O3/Bi12TiO20 Cross-Shaped Heterojunction with Enhanced Visible Light Photocatalytic Performance

Preparation of Binary Type II α-Bi2O3/Bi12TiO20 Cross-Shaped Heterojunction with Enhanced Visible Light Photocatalytic Performance

Development of high-performance bi-functional novel CdSnS2 atom clusters for adsorption of rose Bengal and AOP-assisted degradation of methylene blue

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

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Preparation of Binary Type II α-Bi₂O₃/Bi₁₂TiO₂₀ Cross-Shaped Heterojunction with Enhanced Visible Light Photocatalytic Performance

Preparation of Binary Type II α-Bi₂O₃/Bi₁₂TiO₂₀ Cross-Shaped Heterojunction with Enhanced Visible Light Photocatalytic Performance

Development of high-performance bi-functional novel CdSnS₂ atom clusters for adsorption of rose Bengal and AOP-assisted degradation of methylene blue