α Ag2WO4 under microwave, electron beam and femtosecond laser irradiations: Unveiling the relationship between morphology and photoluminescence emissions

Teixeira, Mayara Mondego; Santos, Lílian Cruz; Tello, Ana Cristina Mora; Almeida, Priscila B.; Silva, Jussara Soares da; Laier, Leticia O.; Gracia, Lourdes; Teodoro, M. D.; Silva, Luís F. da; Longo, E.

doi:10.1016/j.jallcom.2022.163840

Cited by 4 publications

(2 citation statements)

References 70 publications

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“…There were no expected percentages of C 1s in the samples, and the large amount of C 1s observed in the α-Ag 2 WO 4 -CA sample was assigned to the sample holder once the samples were dried for 10 h at 60 • C. The characteristic peaks of the Ag, W, and O atoms indicate a high purity for all samples. The binding energy values calculated for all samples agree with those in the literature for α-Ag 2 WO 4 samples [25,26].…”

Section: Resultssupporting

confidence: 84%

Tug-of-War Driven by the Structure of Carboxylic Acids: Tuning the Size, Morphology, and Photocatalytic Activity of α-Ag2WO4

et al. 2022

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Size and morphology control during the synthesis of materials requires a molecular-level understanding of how the addition of surface ligands regulates nucleation and growth. In this work, this control is achieved by using three carboxylic acids (tartaric, benzoic, and citric) during sonochemical syntheses. The presence of carboxylic acids affects the kinetics of the nucleation process, alters the growth rate, and governs the size and morphology. Samples synthesized with citric acid revealed excellent photocatalytic activity for the degradation process of Rhodamine B, and recyclability experiments demonstrate that it retains 91% of its photocatalytic activity after four recycles. Scavenger experiments indicate that both the hydroxyl radical and the hole are key species for the success of the transformation. A reaction pathway is proposed that involves a series of dissolution−hydration–dehydration and precipitation processes, mediated by the complexation of Ag+. We believe these studies contribute to a fundamental understanding of the crystallization process and provide guidance as to how carboxylic acids can influence the synthesis of materials with controlled size and morphology, which is promising for multiple other scientific fields, such as sensor and catalysis fields.

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Section: Resultssupporting

confidence: 84%

Tug-of-War Driven by the Structure of Carboxylic Acids: Tuning the Size, Morphology, and Photocatalytic Activity of α-Ag2WO4

et al. 2022

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“…Moreover, a very recent study demonstrated unconventional magnetic effects on Ag 2 WO 4 by these irradiation techniques, which opens the possibility for further explorations [274]. Also, the influence of morphology, surface band gap, and microstructure on the photoluminescence emissions of a-Ag 2 WO 4 samples obtained by the CP method, followed by treatment with MAH at different synthesis times and two different irradiation processes, EB and fs laser, has been experimentally and theoretically investigated [275].…”

Section: Ag Np Growth On Ag 2 Wo 4 By Femtosecond Laser Irradiationmentioning

confidence: 99%

Ag2WO4 as a multifunctional material: Fundamentals and progress of an extraordinarily versatile semiconductor

Gouveia

Roca

Macedo

et al. 2022

Journal of Materials Research and Technology

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Structural investigation, photoluminescence, and antibacterial properties of purified palygorskite impregnated with α-Ag2WO4 microcrystals

Quinzeiro,

Morais,

Lopes

et al. 2024

Ceramics International

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α Ag2WO4 under microwave, electron beam and femtosecond laser irradiations: Unveiling the relationship between morphology and photoluminescence emissions

Cited by 4 publications

References 70 publications

Tug-of-War Driven by the Structure of Carboxylic Acids: Tuning the Size, Morphology, and Photocatalytic Activity of α-Ag2WO4

Tug-of-War Driven by the Structure of Carboxylic Acids: Tuning the Size, Morphology, and Photocatalytic Activity of α-Ag2WO4

Ag2WO4 as a multifunctional material: Fundamentals and progress of an extraordinarily versatile semiconductor

Structural investigation, photoluminescence, and antibacterial properties of purified palygorskite impregnated with α-Ag2WO4 microcrystals

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