Oxidative degradation of salicylic acid by sprayed WO3 photocatalyst

Mohite, S.V.; Rajpure, K.Y.

doi:10.1016/j.mseb.2015.06.009

Cited by 31 publications

(5 citation statements)

References 44 publications

(48 reference statements)

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“…The excess amount of UVA radiation causes premature ageing and wrinkling; it means the radiation penetrates into the deeper skin layers, where connective tissue and blood vessels are affected. On the other hand, these radiations are also used for the degradation of the various harmful dies [1].…”

Section: Introductionmentioning

confidence: 99%

Chemical bath deposited ZnO thin film based UV photoconductive detector

Shaikh

Inamdar

Ganbavle

et al. 2016

Journal of Alloys and Compounds

131

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Section: Introductionmentioning

confidence: 99%

Chemical bath deposited ZnO thin film based UV photoconductive detector

Shaikh

Inamdar

Ganbavle

et al. 2016

Journal of Alloys and Compounds

131

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“…Another advantage associated with tungsten as a dopant is its ionic state, i.e., W +6 . When Zn +2 is replaced by a W +6 number of charge carriers in the ZnO system of semiconductor material increased and an improved degradation efficacy can be attained [64]. The charge transfer mechanism accountable for the photocatalytic activity of the g-C 3 N 4 /ZnO-W/Co x heterojunction can be well explained in terms of the configuration of the valance band (VB) and conduction band (CB) positions in g-C 3 N 4 and ZnO using visible light irradiation.…”

Section: Photodegradation Mechanismmentioning

confidence: 99%

Engineering of a Hybrid g-C3N4/ZnO-W/Cox Heterojunction Photocatalyst for the Removal of Methylene Blue Dye

et al. 2023

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Robust hybrid g-C3N4/ZnO-W/Cox heterojunction composites were synthesized using graphitic carbon nitride (g-C3N4) and ZnO-W nanoparticles (NPs) and different concentrations of Co dopant. The hybrid heterojunction composites were prepared by simple and low-cost coprecipitation methods. The fabricated catalyst was explored and investigated using various characterization techniques such as FTIR, XRD, FESEM and EDX. The surface morphology of the as-prepared hybrid nanocomposites with particle sizes in the range of 15–16 nm was validated by SEM analysis. The elemental composition of the synthesized composites was confirmed by EDS analysis. Photocatalysis using a photon as the sole energy source is considered a challenging approach for organic transformations under ambient conditions. The photocatalytic activity of the heterojunctions was tested by photodegrading methylene blue (MB) dye in the presence of sunlight. The reduced band gap of the heterojunction composite of 3.22–2.28 eV revealed that the incorporation of metal ions played an imperative role in modulating the light absorption range for photocatalytic applications. The as-synthesized g-C3N4/ZnO-W/Co0.010 composite suppressed the charge recombination ability during the photocatalytic degradation of methylene blue (MB) dye. The ternary heterojunction C3N4/ZnO-W/Co0.010 composite showed an impressive photocatalytic performance with 90% degradation of MB under visible light within 90 min of irradiation, compared to the outcomes achieved with the other compositions. Lastly, the synthesized composites showed good recyclability and mechanical stability over five cycles, confirming them as promising photocatalyst options in the future.

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“…Previous studies have reported the intrinsic reaction mechanism of WO 3 /elaectrolyte interfaces in various electrolytes [20][21][22][23]. The deposition of WO 3 thin films has been achieved through various techniques, including physical vapor deposition (PVD), chemical vapor deposition (CVD) [24], evaporation [25][26][27], electrodeposition [28], sputtering [29][30][31][32], sol-gel deposition [27,33], and spray pyrolysis technique [34][35][36][37]. The latter technique presents many advantages such as (i) short time deposition, (ii) simple technology, (iii) low-cost, (iv) no need for vacuum, and (v) large-scale area of thin film production.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Electrical Properties and Seebeck Effects of WO3 Thin Films Using Spray Pyrolysis: Insights into the Conductivity and Carrier Type

Asghari

Zad

Eshghi

2023

Advanced Energy Conversion Materials

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This study focuses on enhancing the electrical and thermoelectric properties of tungsten trioxide (WO3) thin films using the spray pyrolysis technique. Three samples, namely A1, A2, and A3, were prepared by depositing the films onto glass substrates at different deposition rates: R1 = 1 mL/min, R2 = 3 mL/min, and R3 = 7 mL/min, respectively. Subsequently, the films underwent annealing at 500 °C for 2 hours in the air. A detailed investigation was conducted to analyze the structural, morphological, optical, and electrical properties of the WO3 thin films. The Field Emission Scanning Electron Microscope (FE-SEM) images revealed the formation of circular strings with varying diameters for all layers. The diameter of each string decreased as the deposition rate increased. X-ray diffraction (XRD) structural analysis indicated that, before annealing, sample A1 exhibited a polycrystalline nature with mixed tetragonal-hexagonal phases, while the other two samples were amorphous. After annealing, sample A3 also became polycrystalline. Moreover, the UV-Vis spectra analysis demonstrated a monotonic decrease in the band gap of the layers with increasing spray rate, potentially attributed to the attenuation of the quantum confinement effect. The Seebeck effect was used to authenticate the n-type conductivity of the WO3 layers, as the Seebeck effect and conductivity exhibited a direct connection. Furthermore, the current-voltage variation was found to align with the oxygen vacancies sites. Remarkably, the sample A3 with the highest deposition rate exhibited the lowest resistivity.

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Oxidative degradation of salicylic acid by sprayed WO3 photocatalyst

Cited by 31 publications

References 44 publications

Chemical bath deposited ZnO thin film based UV photoconductive detector

Chemical bath deposited ZnO thin film based UV photoconductive detector

Engineering of a Hybrid g-C3N4/ZnO-W/Cox Heterojunction Photocatalyst for the Removal of Methylene Blue Dye

Enhancing Electrical Properties and Seebeck Effects of WO3 Thin Films Using Spray Pyrolysis: Insights into the Conductivity and Carrier Type

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