An Experimental and Computational Study of β-AgVO<sub>3</sub>: Optical Properties and Formation of Ag Nanoparticles

Oliveira, Regiane Cristina de; Assis, Marcelo; Teixeira, Mayara Mondego; Silva, Maya Dayana Penha da; Li, Máximo Siu; Andrés, Juan; Longo, Elson

doi:10.1021/acs.jpcc.6b02840

Cited by 54 publications

(53 citation statements)

References 58 publications

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“…Since Ag 4 V 2 O 7 crystal is an n ‐ type semiconductor and oxygen vacancies ( V • O ) are already present, an n / p interface is created between the Ag NPs and Ag 4 V 2 O 7 crystals, thereby forming a semiconductor diode. A semiconductor diode has the valuable property that electrons only flow in one direction across it, and as a result, it acts as a rectifier …”

Section: Resultsmentioning

confidence: 99%

“…A semiconductor diode has the valuable property that electrons only flow in one direction across it, and as a result, it acts as a rectifier. 10 Since the Ag growth on flower-like Ag 4 V 2 O 7 crystals can affect the electrical properties of the material, electrical resistance measurements were performed, and the results were evaluated as a function of the exposure time, ie, as a function of the growth of these metallic Ag nanoparticles. Figure 5 shows the variation in the electrical resistance of flower-like Ag 4 V 2 O 7 crystals subjected to electron beam irradiation at different exposure times.…”

Section: Resultsmentioning

confidence: 99%

“…The reasons for this physicochemical phenomenon have been discussed in recent publications. 6,[8][9][10][11] Therefore, in this communication, we present new findings on the electrical resistance changes with the growth of metallic Ag NPs in the surface of the 3D flower-like Ag 4 V 2 O 7 crystals.…”

Section: Introductionmentioning

confidence: 83%

“…Recently, our group discovered a unwanted real‐time in situ nucleation and growth processes of metallic Ag NPs on different silver‐based semiconductors, such as α‐Ag 2 WO 4 , β‐Ag 2 MoO 4, Ag 3 PO 4 , and β‐AgVO 3 . The nucleation and growth processes were driven, in all cases, by accelerated electron beam irradiation from an electron microscope under high vacuum .…”

Section: Introductionmentioning

confidence: 99%

“…The nucleation and growth processes were driven, in all cases, by accelerated electron beam irradiation from an electron microscope under high vacuum . The reasons for this physicochemical phenomenon have been discussed in recent publications …”

Section: Introductionmentioning

confidence: 99%

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Effect of metallic Ag growth on the electrical resistance of 3D flower‐like Ag₄V₂O₇ crystals

et al. 2017

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In this communication, we report for the first time the nucleation and growth of metallic Ag nanoparticles on the surface of 3D flower‐like Ag4V2O7 crystals, induced by accelerated electron beam irradiation. The growth of metallic Ag on the surfaces of Ag4V2O7 crystals were studied by transmission electron microscopy (TEM) and energy dispersive X‐ray spectroscopy (EDXS). According to TEM images and EDXS analyses, exposure to the electron beam induces a reduction process and the growth of metallic Ag nanoparticles on the surface of Ag4V2O7 crystals. Moreover, the inductively coupled plasma optical emission spectrometry measurements indicated an excess of Ag and V vacancies at Ag4V2O7 lattice. Finally, it was observed that the electrical resistance varies considerably with the exposure time to electron beam irradiation.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of metallic Ag growth on the electrical resistance of 3D flower‐like Ag₄V₂O₇ crystals

et al. 2017

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Laser/Electron Irradiation on Indium Phosphide (InP) Semiconductor: Promising Pathways to In Situ Formation of Indium Nanoparticles

Assis

Macedo

Machado

et al. 2018

Part & Part Syst Charact

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In the current study, whether femtosecond laser and electron beam irradiation of indium phosphide (InP) are “green,” fast, and effective methods to produce metallic In nanoparticles is probed. High‐resolution transmission electron microscopy and energy‐dispersive X‐ray spectroscopy are employed to investigate the formation and growth of In nanoparticles on InP. Density functional theory and quantum theory of atoms in molecules calculations are employed to reveal the nature of formation of In nanoparticles under electron beam irradiation. These results expand the fundamental understanding of the atomic processes underpinning the mechanism of In−P bond rupture during the transformation process induced by the electron irradiation of the InP crystal by increasing the total number of electrons in the bulk structure.

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Unraveling Energy Storage Performance and Mechanism of Metal–Organic Framework‐Derived Copper Vanadium Oxides with Tunable Composition for Aqueous Zinc‐Ion Batteries

Kakarla,

Bandi,

Syed

et al. 2024

Small Methods

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Achieving high‐performance aqueous zinc (Zn)‐ion batteries (AZIBs) requires stable and efficient cathode materials capable of reversible Zn‐ion intercalation. Although layered vanadium oxides possess high Zn‐ion storage capacity, their sluggish kinetics and poor conductivity present significant hurdles for further enhancing the performance of AZIBs. In response to this challenge, a dissolution‐regrowth and conversion approach is formulated using metal–organic frameworks (MOFs) as a sacrificial template, which enables the in situ creation of copper vanadium oxides (CuVOx) with porous 1D channels and distinctive nanoarchitectures. Owing to their distinctive structure, the optimized CuVOx cathode experiences a reaction involving the synergistic insertion/extraction of Zn2+, resulting in rapid Zn2+ diffusion kinetics and enhanced electrochemical activity postactivation. Specifically, the activated electrode delivers a reversible capacity of 519 mAh g−1 at 0.5 A g−1 for AZIBs. It is noteworthy that the electrode exhibits a remarkable reversible rate capacity of 220 mAh g−1 at 5 A g−1 with excellent durable cycleability, retaining 88% of its capacity even after 3000 cycles. Various ex situ testing methods endorse the reversible insertion/extraction of Zn2+ in the CuVOx cathode. This study provides a novel insight into high‐performance MOF‐derived unique structure designs for AZIB electrodes.

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An Experimental and Computational Study of β-AgVO₃: Optical Properties and Formation of Ag Nanoparticles

Cited by 54 publications

References 58 publications

Effect of metallic Ag growth on the electrical resistance of 3D flower‐like Ag₄V₂O₇ crystals

Effect of metallic Ag growth on the electrical resistance of 3D flower‐like Ag₄V₂O₇ crystals

Laser/Electron Irradiation on Indium Phosphide (InP) Semiconductor: Promising Pathways to In Situ Formation of Indium Nanoparticles

Unraveling Energy Storage Performance and Mechanism of Metal–Organic Framework‐Derived Copper Vanadium Oxides with Tunable Composition for Aqueous Zinc‐Ion Batteries

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An Experimental and Computational Study of β-AgVO3: Optical Properties and Formation of Ag Nanoparticles

Cited by 54 publications

References 58 publications

Effect of metallic Ag growth on the electrical resistance of 3D flower‐like Ag4V2O7 crystals

Effect of metallic Ag growth on the electrical resistance of 3D flower‐like Ag4V2O7 crystals

Laser/Electron Irradiation on Indium Phosphide (InP) Semiconductor: Promising Pathways to In Situ Formation of Indium Nanoparticles

Unraveling Energy Storage Performance and Mechanism of Metal–Organic Framework‐Derived Copper Vanadium Oxides with Tunable Composition for Aqueous Zinc‐Ion Batteries

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An Experimental and Computational Study of β-AgVO₃: Optical Properties and Formation of Ag Nanoparticles

Effect of metallic Ag growth on the electrical resistance of 3D flower‐like Ag₄V₂O₇ crystals

Effect of metallic Ag growth on the electrical resistance of 3D flower‐like Ag₄V₂O₇ crystals