Surface plasmon enhanced near-UV emission in monodispersed ZnO:Ag core–shell type nanoparticles synthesized by a wet chemical method

Jadhav, J.; Biswas, Somnath

doi:10.1016/j.spmi.2015.12.040

Cited by 24 publications

(5 citation statements)

References 61 publications

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“…In comparison with other works, the E g of nano‐ZnO was only reduced from 3.25 eV to 3.18 eV, by Ag doping at 400 °C in the solid state milling and calcination of precursor powders [22] . Similarity, for ZnO−Ag core‐shell nanoparticles, the E g value of nano‐ZnO slightly reduced from 3.2 eV to 3.1 eV, once coated nano‐ZnO by AgNPs [23] . Thus, combination of TEM and UV‐Vis‐DR data confirmed the successful fabrication of ZnO−Ag nanohybrids.…”

Section: Resultsmentioning

confidence: 41%

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ZnO−Ag Hybrid Nanoparticles Used in the Antimicrobial Solvent‐Based Coatings: Antibacterial Studies in the Darkness and Under Visible‐Light Irradiation

Truc

Nguyen

et al. 2023

ChemistrySelect

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This study explores how hybrid nanoparticles can be used to improve the antibacteial properties of both single nanoparticles and their polymeric nanocomposite coatings. Hybridization of two different nanoparicles, such as nano‐ZnO and silver nanoparticles (AgNPs) has been carried out to combine advantages of the individual particles. For these purposes, firstly ZnO−Ag hybrid nanoparticles were chemically fabricated by reducing Ag+ precursor on the as‐received nano‐ZnO using sodium borohydride in aqueous medium. Thereafter, these ZnO−Ag nanohybrids were introduced into the acrylic polyurethane matrix (at 2 wt.%) under sonication in xylene/toluene solvents. To reveal the effect of hybridization on the antibacterial activity against E. coli of both ZnO−Ag nanohybrids and their nanocomposite coatings, two antibacterial tests have been carrieried out in presence of visible light irradiation or without light (in dark). The agar‐well diffusion method indicated that ZnO−Ag nanohybrids exhibited high antibacterial activity against E.coli at the low concentration (8 mg/mL). In addition, their larger inhibition zones under visible light exposure were observed, when compared to the dark condition. Similarity, antibacterial test (ISO 22196 : 2007 standard) indicated that nanocomposite coating under visible light exposure had a higher antibacterial activity than that in the dark condition. Data from this antibacterial test after 24 h indicated that the visible light exposure provided more bactericidal efficiency for APU/ZnO−Ag coating (4.17 log), as compared to the dark condition (4.07 log). This increase in the bactericidal efficiency can be attributed to the hybridization of nano‐ZnO and AgNPs in their hybrid nanostructure. From the experimental data, we propose the mechanism for antibacterial activity of ZnO−Ag hybrid nanoparticles. In addition, TEM photographs indicated that AgNPs (10–30 nm) were attached to the surface of nano‐ZnO (<100 nm). Data from the diffused reflectance spectra indicated that the deposition of AgNPs on nano‐ZnO reduced its band gap energy (Eg) from 3.2 eV to 2.75 eV. In case of nanocomposite coating, addition of 2 wt.% ZnO−Ag nanohybrids into the acrylic polyurethane matrix significantly increased their impact strength and abrasion resistance.

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Section: Resultsmentioning

confidence: 41%

“…[22] Similarity, for ZnOÀ Ag core-shell nanoparticles, the E g value of nano-ZnO slightly reduced from 3.2 eV to 3.1 eV, once coated nano-ZnO by AgNPs. [23] Thus, combination of TEM and UV-Vis-DR data confirmed the successful fabrication of ZnOÀ Ag nanohybrids.…”

Section: Characterization Of Znoà Ag Nanohybridsmentioning

confidence: 61%

ZnO−Ag Hybrid Nanoparticles Used in the Antimicrobial Solvent‐Based Coatings: Antibacterial Studies in the Darkness and Under Visible‐Light Irradiation

Truc

Nguyen

et al. 2023

ChemistrySelect

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“…К сожале-нию, недостатком наноструктур с большой удельной поверхностью являются их метастабильность, а также высокая скорость рекомбинации неравновесных носите-лей заряда. Поэтому более перспективным для детек-тирования УФ и для осуществления ряда фотохимиче-ских реакций, а также для создания газовых сенсоров представляется вариант использования нанокомпозитов ZnO/Ag [9,11,20,21,[26][27][28][29][30][31][32][33]. Согласно [26,28,31], благода-ря возникновению в наночастицах Ag локализованного поверхностного плазмонного резонанса интенсифициру-ется захват света гетероструктурой ZnO/Ag.…”

Section: Discussionunclassified

Структура и свойства электроосажденных в импульсном режиме наноструктурированных массивов ZnO и нанокомпозитов ZnO/Ag на их основе

Kopach¹,

Klepikova²,

Клочко³

et al. 2017

Физика И Техника Полупроводников

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Исследованы структура, морфология поверхности и оптические свойства электроосажденных в импульсном режиме наноструктурированных массивов ZnO, а также осажденных из коллоидных растворов наночастиц Ag и нанокомпозитов ZnO/Ag на их основе. По результатам исследований вольт-амперных и вольт-фарадных характеристик проведен анализ электронных и электрических параметров массивов ZnO и нанокомпозитов ZnO/Ag. Определены оптимальные режимы изготовления стабильных и высокочувствительных по отношению к ультрафиолетовому излучению гетероструктур ZnO/Ag в качестве перспективных материалов фотодетекторов, газовых датчиков и фотокатализаторов. DOI: 10.21883/FTP.2017.03.44206.8303

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“…The Ag-embedded samples showed higher absorption intensities in the visible region. This was attributed to the surface plasmon absorption characteristics of Ag [35,36]. This suggests that visible light can be used for the Ag/ZnO-MMT nanocomposite in photocatalysis processes.…”

Section: Study Of Uv-vis Diffuse Reflectance Spectramentioning

confidence: 99%

The green synthesis of Ag/ZnO in montmorillonite with enhanced photocatalytic activity

Sohrabnezhad

Seifi

2016

Applied Surface Science

106

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Surface plasmon enhanced near-UV emission in monodispersed ZnO:Ag core–shell type nanoparticles synthesized by a wet chemical method

Cited by 24 publications

References 61 publications

ZnO−Ag Hybrid Nanoparticles Used in the Antimicrobial Solvent‐Based Coatings: Antibacterial Studies in the Darkness and Under Visible‐Light Irradiation

ZnO−Ag Hybrid Nanoparticles Used in the Antimicrobial Solvent‐Based Coatings: Antibacterial Studies in the Darkness and Under Visible‐Light Irradiation

Структура и свойства электроосажденных в импульсном режиме наноструктурированных массивов ZnO и нанокомпозитов ZnO/Ag на их основе

The green synthesis of Ag/ZnO in montmorillonite with enhanced photocatalytic activity

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