High Adsorption Capacity for Cationic Dye Removal and Antibacterial Properties of Sonochemically Synthesized Ag<sub>2</sub>WO<sub>4</sub> Nanorods

Dutta, Dimple P.; Singh, Anamika; Ballal, Anand; Tyagi, A. K.

doi:10.1002/ejic.201402612

Cited by 64 publications

(39 citation statements)

References 49 publications

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“…Silver tungstate, α‐Ag 2 WO 4 , is a material that has received special attention from the scientific community because of its applications in a variety of fields such as photoluminescence, bactericide behavior, gas sensor, and photocatalytic activity …”

Section: Introductionmentioning

confidence: 99%

Formation of Ag nanoparticles under electron beam irradiation: Atomistic origins from first‐principles calculations

Andrés

Gouveia

Gracia

et al. 2017

Int J of Quantum Chemistry

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The formation of Ag nanoparticles is currently a topic subject to a great deal of research because they are excellent materials with many technological applications. Recently, the formation of Ag nanoparticles on a-Ag 2 WO 4 semiconductors induced by electron irradiation has been reported, but the mechanism underlying the transformations remains elusive. The aim of this article is to describe the mechanisms of electron beam irradiation on a-Ag 2 WO 4 and its transformation to form Ag nanoparticles in vacuum conditions. To this end, a combined study involving experiments and multiscale computational approaches (density functional theory calculations and molecular dynamics simulations) is presented. With the increasing interplay between experimental and computational approaches at multiple length scales, we will also discuss how these combined data can be used to provide a deep insight into the rationalization of electron beam-induced transformations. This phenomenon is likely to be promoted by electron charge redistribution in these materials due to electronic excitations combined with the formation of silver vacancies under electron beam irradiation. As this mechanism should be relevant to other Ag-based materials, our results provide pointers for the further development and optimization of electron beammediated engineering of the atomic structure and electronic properties at the atomic resolution. K E Y W O R D Sa-Ag 2 WO 4 , Ag nanoparticles, electron beam irradiation, first-principles calculations, plasmons | I N TR ODU C TI ONIn recent years, a strong continuous effort has been made in the synthesis of Ag nanoparticles (NPs) due to their remarkable properties and exciting applications in areas such as photonics, electronics, photocatalysis, sensing, and biomedicine. [1][2][3][4][5][6][7][8][9][10][11][12] The possibility of building new materials byThis article is dedicated to our colleague and friend, Prof. Nino Russo, as a tribute on the occasion of his 70th birthday. We hereby take this opportunity to convey our most heartfelt congratulations to an excellent person and a great researcher who possesses a privileged vision of interpersonal relations, teachinglearning processes, and technical-scientific innovations. combining metallic Ag with a semiconductor gives rise to a broad spectrum of synergistic and complementary properties that enable new applications to be developed, and many studies have revealed that the deposition of Ag on semiconductors enhances their photocatalytic activity due to the particular properties of Ag-based photocatalysts. [13,14] This phenomenon is related to the surface plasmon resonance, which improves the separation of the electron-hole pair. [15][16][17][18][19][20][21][22][23][24] The controlled combination of these two different materials is an interesting challenge, in which Ag NPs on the contact interface trigger structural and electronic variations that affect the photocatalytic performance of the semiconductor by increasing the electron-hole separation and then th...

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Section: Introductionmentioning

confidence: 99%

Formation of Ag nanoparticles under electron beam irradiation: Atomistic origins from first‐principles calculations

Andrés

Gouveia

Gracia

et al. 2017

Int J of Quantum Chemistry

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“…A range of applications for silver tungstate is reported in the literature these include chemical fixation of CO 2 [22], a catalyst in organic chemistry [23], photoswitches [24], photocatalysis of organic pollutants [25][26][27][28][29][30], lubricants [31], electrocatalysis [32], gas sensor [33,34], LED [35] as well as an antimicrobial and antibacterial agents [36][37][38]. The influence of electron beam irradiation on structural and optical properties of this material has also been investigated [39].…”

Section: Introductionmentioning

confidence: 99%

Low temperature micro Raman and laser induced upconversion and downconversion spectra of europium doped silver tungstate Ag2−3xEuxWO4 nanorods

Pinatti

Ireland

Fern

et al. 2016

J Mater Sci: Mater Electron

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All the red emitting europium-doped silver tungstate a-Ag 2-3x Eu x WO 4 (x = 0.01-0.08 mol) phosphor reported herein crystalise as nanorods. The nanorods were structurally characterised by X-ray powder diffraction, Rietveld refinement, low temperature (20 to -190°C) micro-Raman spectroscopy . The morphology of the nanorods reported herein was confirmed by field emission scanning electron microscopy. The optical properties were studied using low temperature (20 to -190°C) high resolution laser excited upconversion and downconversion luminescence.

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“…The h + in bottom of the valence band will react with water and generate • OH radicals and electron present in top of the conduction band of SNBS should create superoxide anion radicals (O 2 •− ) during the methylene degradation under visible light irradiation . Finally the materialization of active radicals result in the expert to degrades MB dye during visible light irradiation towards complete and fast degradation behavior was observed.…”

Section: Resultsmentioning

confidence: 99%

Biological Evolution of New Intercalated Layered Double Hydroxides: Anticancer, Antibacterial and Photocatalytic Studies

et al. 2017

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In this work, we have synthesized a novel sodium‐3‐nitrobenzenesulfonate (SNBS) of organic moiety intercalated into Zn−Al layered double hydroxide nanoflakes (ZANF) via facile hydrothermal method. The structure, optical property, morphology, size and surface area of the as‐synthesized intercalated Zn−Al nanoflakes (i‐ZANF) were characterized by various techniques. The i‐ZANF was utilized as an anti‐cancer agent against MCF‐7 cell lines. The IC50 value of synthesized i‐ZANF against MCF‐7 cancer cell was found to be 30 μg/mL. Antibacterial activity against noxious bacteria such as, methicillin resistant staphylococcus areus and Acinetobacter baumannii has been examined. Photocatalytic activity of i‐ZANF was evaluated by using methylene blue (MB) as a toxic environmental pollutant. The obtained results showed that the i‐ZANF has notable antibacterial and anticancer activity, along with excellent photocatalytic degradation efficiency (91.2% within 105 min). Hence, it can be proposed that the i‐ZANF with multifunctional applications has been developed to expand as large potential window for anticancer agents, antibaterial and photocatalytic field in upcoming days.

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High Adsorption Capacity for Cationic Dye Removal and Antibacterial Properties of Sonochemically Synthesized Ag₂WO₄ Nanorods

Cited by 64 publications

References 49 publications

Formation of Ag nanoparticles under electron beam irradiation: Atomistic origins from first‐principles calculations

Formation of Ag nanoparticles under electron beam irradiation: Atomistic origins from first‐principles calculations

Low temperature micro Raman and laser induced upconversion and downconversion spectra of europium doped silver tungstate Ag2−3xEuxWO4 nanorods

Biological Evolution of New Intercalated Layered Double Hydroxides: Anticancer, Antibacterial and Photocatalytic Studies

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High Adsorption Capacity for Cationic Dye Removal and Antibacterial Properties of Sonochemically Synthesized Ag2WO4 Nanorods

Cited by 64 publications

References 49 publications

Formation of Ag nanoparticles under electron beam irradiation: Atomistic origins from first‐principles calculations

Formation of Ag nanoparticles under electron beam irradiation: Atomistic origins from first‐principles calculations

Low temperature micro Raman and laser induced upconversion and downconversion spectra of europium doped silver tungstate Ag2−3xEuxWO4 nanorods

Biological Evolution of New Intercalated Layered Double Hydroxides: Anticancer, Antibacterial and Photocatalytic Studies

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High Adsorption Capacity for Cationic Dye Removal and Antibacterial Properties of Sonochemically Synthesized Ag₂WO₄ Nanorods