Role of fluorine doping on luminescence centers and enhanced photocatalytic performance of nebulizer sprayed TiO2 films under visible light

Ravidhas, C.; Anitha, B.; Venkatesh, R.; Monica, S. Esther Santhoshi; Gopalakrishna, Deepak; Raj, A. Moses Ezhil; Ravichandran, K.

doi:10.1016/j.jlumin.2018.02.050

Cited by 11 publications

(3 citation statements)

References 47 publications

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“…The phonons lifetime of films can be calculated by 27 : where ΔE represents the uncertainty in the energy of the phonon mode, ћ denotes Planck’s constant divided by 2π and Γ is the full-width at half maximum of the Raman peak in units of cm -1 . The related data of the phonon lifetime are illustrated in Table 2 .…”

Section: Methodsmentioning

confidence: 99%

“…As a result of changing the substrate type and the employed deposition angle, the crystalline structure of samples changes; one of which is the change in crystallite size that is effective in the phonons lifetime. Actually, with the increment of the crystallite size, the lifetime of phonon increases too 27 . In addition, with the increase of deposition angle and increase of the defects in the structure, the phonon lifetime increases 28 .…”

Section: Methodsmentioning

confidence: 99%

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Growth mechanism of nano-plates structured SnS films on different substrates in glancing angle deposition method

Sazideh

Ehsani

Shahidi

et al. 2022

Sci Rep

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In this work, Tin (II) sulfide films have been deposited on glass, Indium Tin Oxide, and Fluorinated Tin Oxide substrates at the deposition angles of 0º, 65º, and 85º using Physical Vapor Deposition method equipped with Glancing Angle Deposition technique. Based on the results obtained from the X-ray diffraction technique, the crystalline structure of substrates and the angle of depositions along with their effects on the structure of SnS nano-plates have been investigated. Using Raman analysis, the phonons lifetime of the samples was found to change with the type of substrate and the employed deposition angle. Based Energy-dispersive X-ray spectroscopy analysis, the atomic ratio of Sn to S was observed to change with the change of deposition angle, substrate type and variation the diameter of nano-plates. This phenomenon resulted the formation of the second phase of Sn2S3 which was confirmed by Raman and X-ray diffraction patterns. The nano-sheets-like growth of all the samples has been confirmed using Felid Emission Scanning Electron Microscopy analysis. For further morphological studies, the Atomic Force Microscopy analysis has been applied, by which the direct relation between the substrate roughness and the final structure of the samples has been observed. The relation between the substrate roughness and the deposition angle in the growth process of SnS nano-sheets has been explained.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Growth mechanism of nano-plates structured SnS films on different substrates in glancing angle deposition method

Sazideh

Ehsani

Shahidi

et al. 2022

Sci Rep

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“…Element doping is a convenient method used to introduce foreign materials and structures into semiconductors. Doping metal and non-metal elements in TiO 2 refers to the introduction of foreign atoms into the crystal structure during the synthetic process, which provides an intermediate state in the band gap and transit center for the electron-hole pair, thereby affecting the generation of reactive species by tuning the redox potential and narrowing the band structure, which allows a higher response to the visible light of solar energy [32,44]. However, the doping sites are also the recombination centers for electrons and holes; thus, balance between insertion of the mid-gap in the lattice and the introduction of recombination centers is a concern when applying the doping method [45].…”

Section: Improvement Strategiesmentioning

confidence: 99%

Review of Piezocatalysis and Piezo-Assisted Photocatalysis in Environmental Engineering

He,

Dong,

Chen

et al. 2023

Crystals

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In light of external bias potential separating charge carriers on the photocatalyst surface, piezo materials’ built-in electric field plays a comparable role in enhancing photocatalyst performance. The synergistic effect provided by combining piezo materials assures the future of photocatalysis in practical applications. This paper discusses the principles and mechanisms of piezo-photocatalysis and various materials and structures used for piezo-photocatalytic processes. In piezo-photocatalyst composites, the built-in electric field introduced by the piezo component provides bias potential and extracts photocatalytically generated charge carriers for their subsequent reaction to form reactive oxygen species, which crucially affects the catalytic performance. In the composites, the shape and structure of substrate materials particularly matter. The potential of this technology in other applications, such as energy generation and environmental remediation, are discussed. To shed light on the practical application and future direction of the technique, this review gives opinions on moving the technique forward in terms of material development, process optimization, pilot-scale studies, comprehensive assessment of the technology, and regulatory frameworks to advance practical applications, and by analyzing its principles, applications, and challenges, we hope to inspire further research and development in this field and promote the adoption of piezo-photocatalysis as a viable treatment method for treating emerging pollutants in wastewater.

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Simultaneous doping of higher ionic state metal and surface plasmon resonance-inducing element with ZnO: an effective approach to improve photocatalytic dye degradation

et al. 2020

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Role of fluorine doping on luminescence centers and enhanced photocatalytic performance of nebulizer sprayed TiO2 films under visible light

Cited by 11 publications

References 47 publications

Growth mechanism of nano-plates structured SnS films on different substrates in glancing angle deposition method

Growth mechanism of nano-plates structured SnS films on different substrates in glancing angle deposition method

Review of Piezocatalysis and Piezo-Assisted Photocatalysis in Environmental Engineering

Simultaneous doping of higher ionic state metal and surface plasmon resonance-inducing element with ZnO: an effective approach to improve photocatalytic dye degradation

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