Synthesis and Characterization of Highly Photocatalytic Active Ce and Cu Co-Doped Novel Spray Pyrolysis Developed MoO3 Films for Photocatalytic Degradation of Eosin-Y Dye

Kamoun, Olfa; Gassoumi, Abdelaziz; Shkir, Mohd.; Gorji, Nima E.; Turki-Kamoun, Najoua

doi:10.3390/coatings12060823

Cited by 27 publications

(6 citation statements)

References 27 publications

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“…To clarify the NA mechanisms, it is necessary to determine the bandgap energy of the materials. The bandgap energy is obtained by the Tauc plot using the below expression [49].…”

Section: Linear Optical Analysismentioning

confidence: 99%

Enhanced nonlinear absorption and photoluminescence properties of Zn, Fe, Cu, V and Ni doped MoO₃ transition metal oxide thin films

Pepe,

Tutel,

Ucar

et al. 2024

Phys. Scr.

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In this study, the effect of the dopant element on the linear, nonlinear absorption and optical limiting properties of ultrasonically sprayed MoO3 thin films is presented. The linear optical results showed an increase with the density of the defect states in the bandgap with doping, in conjunction with a decrease in bandgap energy and an increase in Urbach energy. Broad photoluminescence emissions are detected in the range of 350 and 600 nm, decreasing in intensity by doping. To reveal the defect states effects’ on the nonlinear absorption (NA) behavior, OA Z-scan data were analyzed with two theoretical models considering only two photon absorption (2PA) (model 1), and one photon absorption (OPA), 2PA and free carrier absorption (model 2). The NA behavior is observed and found to get enhanced by increasing input intensity and doping atoms due to generation of new oxygen vacancies and formation of further defect states. The NA coefficient values of the thin films in model 2 are 100 times higher than that of 2PA coefficient values in model 1. This result revealed the strong effect of defect states on the NA behavior. Among the investigated dopant atoms, Cu resulted in enhanced NA due to the higher density of defect states. While the genuine 2PA is the dominant NA mechanism for V and Fe doped MoO3 thin films, OPA and 2PA are the dominant NA mechanisms for the Ni, Zn and Cu doped MoO3 thin films due to their higher concentration of defect states. Cu-doped MoO3 thin film has a lower optical limiting threshold of 0.026 mJ/cm2 due to its enhanced NA behavior. Considering the results obtained, this study opens the door to the potential of doped MoO3 thin films to be used as optical limiters in the visible wavelength region.

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“…To clarify the NA mechanisms, it is necessary to determine the bandgap energy of the materials. The bandgap energy is obtained by the Tauc plot using the below expression [49].…”

Section: Linear Optical Analysismentioning

confidence: 99%

Enhanced nonlinear absorption and photoluminescence properties of Zn, Fe, Cu, V and Ni doped MoO₃ transition metal oxide thin films

Pepe,

Tutel,

Ucar

et al. 2024

Phys. Scr.

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“…The combination of a PLA layer and a biphasic PLA/bioglass G5 layer for the regeneration of osteochondral defects by using a nozzle-deposition system with the direct-printing tool has been reported by Barbeck et al [ 97 ]. The data obtained from both histomorphometry measurements and histological observations revealed the tissue responses to different layers of two-layered scaffolds are localized to the relevant implantation sites [ 98 ].…”

Section: Pla In Extrusion-based Printing Technologiesmentioning

confidence: 99%

3D printing of polylactic acid: recent advances and opportunities

Joseph

Kallingal

Suresh

et al. 2023

Int J Adv Manuf Technol

123

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Bio-based polymers are a class of polymers made by living organisms, a few of them known and commercialized yet. Due to poor mechanical strength and economic constraints, they have not yet seen the extensive application. Instead, they have been an appropriate candidate for biological applications. Growing consumer knowledge of the environmental effect of polymers generated from petrochemical sources and a worldwide transition away from plastics with a lifespan of hundreds of years has resulted in greater interest in such hitherto unattainable sectors. Bio-based polymers come in various forms, including direct or “drop-in” replacements for their petrochemical counterparts with nearly identical properties or completely novel polymers that were previously unavailable, such as polylactide. Few of these bio-based polymers offer significantly improved technical specifications than their alternatives. Polylactic acid (PLA) has been well known in the last decade as a biodegradable thermoplastic source for use in 3DP by the “fused deposition modeling” method. The PLA market is anticipated to accomplish 5.2 billion US dollars in 2020 for its industrial usage. Conversely, 3DP is one of the emerging technologies with immense economic potential in numerous sectors where PLA is one of the critical options as the polymer source due to its environmentally friendly nature, glossiness, multicolor appearance, and ease of printing. The chemical structure, manufacturing techniques, standard features, and current market situation of PLA were examined in this study. This review looks at the process of 3DP that uses PLA filaments in extrusion-based 3DP technologies in particular. Several recent articles describing 3D-printed PLA items have been highlighted.

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“…The paint supplier is a hydraulic atomization device. The paint fluid is forced by a high-pressure paint pump to coerce the generation of paint droplets as the fluid passes through the cylindrical nozzle of the hydraulic atomizer [8,9]. Hydraulic atomization is applied due to its geometrical simplicity compared to mechanical atomization devices [10].…”

Section: Introductionmentioning

confidence: 99%

A CFD-DEM Simulation of Droplets in an Airless Spray Coating Process of a Square Duct

Li,

Chen,

Hong

et al. 2024

Coatings

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The purpose of this paper is to provide a numerical simulation, taking into account the collisional interactions of droplets in an airless rotary spray coating process. The hydrodynamics of gas and droplets are simulated using the CFD-discrete element method (DEM) with the JKR contact model in an airless rotary spray coating process of a horizontal square duct. The surface energy parameter used in the JKR model is calibrated using a virtual accumulation angle test in the funnel device. Based on the distribution of accumulation angles, a suitable surface energy for wall droplets is proposed. A rational gas RNG k-ε model is suggested in accordance with the comparisons of velocities, standard deviations, and the skewness of droplet number fractions from three turbulence models. The simulations of droplet film thicknesses agree with measurements from the literature regarding the film thickness along a vertical panel. The correlations of the exit gas and droplet velocities of sprayer holes are proposed with a discharge coefficient of 0.85 for gas and 5.87 for droplets. A number index of droplets is introduced in order to measure the uniformity of droplet distributions. A low droplet number index is found at low rotational speeds, representing a more uniform distribution of droplets as the rotation speeds reduce within the square duct. The normal force between the droplet and the wall is approximately an order of magnitude larger than the droplet–wall tangential force of collisions.

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Synthesis and Characterization of Highly Photocatalytic Active Ce and Cu Co-Doped Novel Spray Pyrolysis Developed MoO3 Films for Photocatalytic Degradation of Eosin-Y Dye

Cited by 27 publications

References 27 publications

Enhanced nonlinear absorption and photoluminescence properties of Zn, Fe, Cu, V and Ni doped MoO₃ transition metal oxide thin films

Enhanced nonlinear absorption and photoluminescence properties of Zn, Fe, Cu, V and Ni doped MoO₃ transition metal oxide thin films

3D printing of polylactic acid: recent advances and opportunities

A CFD-DEM Simulation of Droplets in an Airless Spray Coating Process of a Square Duct

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Synthesis and Characterization of Highly Photocatalytic Active Ce and Cu Co-Doped Novel Spray Pyrolysis Developed MoO3 Films for Photocatalytic Degradation of Eosin-Y Dye

Cited by 27 publications

References 27 publications

Enhanced nonlinear absorption and photoluminescence properties of Zn, Fe, Cu, V and Ni doped MoO3 transition metal oxide thin films

Enhanced nonlinear absorption and photoluminescence properties of Zn, Fe, Cu, V and Ni doped MoO3 transition metal oxide thin films

3D printing of polylactic acid: recent advances and opportunities

A CFD-DEM Simulation of Droplets in an Airless Spray Coating Process of a Square Duct

Contact Info

Product

Resources

About

Enhanced nonlinear absorption and photoluminescence properties of Zn, Fe, Cu, V and Ni doped MoO₃ transition metal oxide thin films

Enhanced nonlinear absorption and photoluminescence properties of Zn, Fe, Cu, V and Ni doped MoO₃ transition metal oxide thin films