Calcination temperature dependent structural modifications, tailored morphology and luminescence properties of MoO3 nanostructures prepared by sonochemical method

Yogananda, H.S.; Nagabhushana, H.; Naik, Ramachandra; Prashantha, S.C.

doi:10.1016/j.jsamd.2017.11.001

Cited by 19 publications

(8 citation statements)

References 56 publications

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“…However, the strong quantum confinement of nanostructures makes the nanostructured MoO 3 emit luminescence via direct transition or defect induced level transition [12]. Importantly, the Mo 5+ defects and oxygen vacancies result in photoluminescence (PL) of MoO 3 -based materials [12,13,[19][20][21][22]. In particular, the PL emission of MoO 3 -based nanomaterials is enhanced through morphology engineering and doping techniques [12,13,23,24].…”

Section: Introductionmentioning

confidence: 99%

Effects of tungsten doping on structure and photoluminescence of MoO_3–xnanomaterials

Wang

Zhong

Shao

et al. 2020

J. Phys. D: Appl. Phys.

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The challenge in molybdenum oxides intended for integration into electronic, optical, energy conversion, and other devices is tuning of their photoluminescence (PL) properties. Despite some initial studies on possibilities of tuning PL properties, this issue remains unresolved. For this reason, we explored the tailoring of PL properties of molybdenum oxide nanomaterials with a dopant through a robust synthesis by hot filament chemical vapour deposition. Here the MoO3–x nanomaterials are doped with tungsten in a low concentration, and the room temperature PL properties are studied. The obtained results highlight the interaction of Mo5+ defects and oxygen vacancies, which are playing an essential role in the enhancement of green PL emission. Moreover, the used doping method is fast and straightforward and can be used to control the structure as well as the PL properties of molybdenum oxide nanomaterials.

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Section: Introductionmentioning

confidence: 99%

Effects of tungsten doping on structure and photoluminescence of MoO_3–xnanomaterials

Wang

Zhong

Shao

et al. 2020

J. Phys. D: Appl. Phys.

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“…Often these changes in their crystal structure can lead to novel properties and the opening up of potential applications in several research areas, like photocatalysts, sensing gas, ion conductors, among others. 1,2,3,4,5,6,7,8,9,10 Polymorphs of binary or complex metal oxides are well known in several oxides, namely TiO 2 , CaCO 3 , ZrO 2 , WO 3 , as well as zeolites and SiO 2 , etc. 11,12,13,14,15,16 These polymorphs have different stabilities and may transform, under particular conditions, from an unstable form (metastable phase) to a more stable polymorph.…”

Section: Introductionmentioning

confidence: 99%

“…Different polymorphs can have dramatically different chemical, physical, and biological properties. Often these changes in their crystal structure can lead to novel properties and the opening up of potential applications in several research areas, such as photocatalysts, sensing gases, and ion conductors among others. − …”

Section: Introductionmentioning

confidence: 99%

Selective Synthesis of α-, β-, and γ-Ag₂WO₄ Polymorphs: Promising Platforms for Photocatalytic and Antibacterial Materials

et al. 2020

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Silver tungstate (Ag 2 WO 4 ) shows structural polymorphism with different crystalline phases, namely orthorhombic, hexagonal, and cubic structures that are commonly known as α, β, and γ, respectively. In this work, these Ag 2 WO 4 polymorphs were selectively and successfully synthesized through a simple precipitation route at ambient temperature. The polymorph-controlled synthesis was conducted by means of the volumetric ratios of the silver nitrate/tungstate sodium dehydrate precursors in solution. The structural and electronic properties of the as-synthetized Ag 2 WO 4 polymorphs were investigated by using a combination of X-ray diffraction and Rietveld refinements, X-ray absorption spectroscopies, X-ray absorption near edge structure spectroscopy, field emission-scanning electron microscopy images, and photoluminescence. To complement and rationalize the experimental results, first-principles calculations, at density functional theory level, were carried out, leading to an unprecedented glimpse into the atomic-level properties of the morphology and the exposed surfaces of Ag 2 WO 4 polymorphs. Following the analysis of the local coordination of Ag and W cations (clusters) at each exposed surface of the three polymorphs, the structure-property relationship between the morphology and the photocatalytic and antibacterial activities against Amiloride degradation under ultraviolet light irradiation and methicillin-resistant Staphylococcus aureus, respectively, was investigated. A possible mechanism of the photocatalytic and antibacterial activity as well the formation process and growth of the polymorphs is also explored and proposed.

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“…As a typical layered materials and n-type metal oxide semiconductors, MoO 3 nanomaterials have drawn considerable attention because of their superior physical and chemical properties [1,2]. In recent years, they have been applied extensively as photochromic and electrochromic devices, gas sensors and catalysis, chemical and biological sensors, catalysts, energy storage, battery electrodes and supercapacitors [3][4][5][6][7][8][9][10][11][12]. The structures and morphologies of MoO 3 affect greatly its superior properties.…”

Section: Introductionmentioning

confidence: 99%

A facile synthesis and controlled growth of various MoO3 nanostructures and their gas-sensing properties

Cao

Zhao

2019

SN Appl. Sci.

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In this paper, three MoO 3 nanostructures were successfully synthesized via a hydrothermal method with the assistance of surfactants. We systematically explained the evolution process and proposed the possible formation mechanisms of the morphologies. The additives played an important role in the formation of MoO 3 morphologies. The gas sensing performance of the MoO 3 nanostructures to ethanol was also investigated. 3D porous nest-like MoO 3 nanostructures assembled with numerous nanorods exhibited excellent property. The results may be of great benefit to further investigations of synthesizing different MoO 3 nanostructures and their gas sensing applications.

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Calcination temperature dependent structural modifications, tailored morphology and luminescence properties of MoO3 nanostructures prepared by sonochemical method

Cited by 19 publications

References 56 publications

Effects of tungsten doping on structure and photoluminescence of MoO_3–xnanomaterials

Effects of tungsten doping on structure and photoluminescence of MoO_3–xnanomaterials

Selective Synthesis of α-, β-, and γ-Ag₂WO₄ Polymorphs: Promising Platforms for Photocatalytic and Antibacterial Materials

A facile synthesis and controlled growth of various MoO3 nanostructures and their gas-sensing properties

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Calcination temperature dependent structural modifications, tailored morphology and luminescence properties of MoO3 nanostructures prepared by sonochemical method

Cited by 19 publications

References 56 publications

Effects of tungsten doping on structure and photoluminescence of MoO3–xnanomaterials

Effects of tungsten doping on structure and photoluminescence of MoO3–xnanomaterials

Selective Synthesis of α-, β-, and γ-Ag2WO4 Polymorphs: Promising Platforms for Photocatalytic and Antibacterial Materials

A facile synthesis and controlled growth of various MoO3 nanostructures and their gas-sensing properties

Contact Info

Product

Resources

About

Effects of tungsten doping on structure and photoluminescence of MoO_3–xnanomaterials

Effects of tungsten doping on structure and photoluminescence of MoO_3–xnanomaterials

Selective Synthesis of α-, β-, and γ-Ag₂WO₄ Polymorphs: Promising Platforms for Photocatalytic and Antibacterial Materials