Influence of erbium doping on zinc oxide nanoparticles: Structural, optical and antimicrobial activity

Sánchez-López, Angélica Lizeth; Sánchez-Martínez, A.; Ceballos-Sánchez, O.; Sepúlveda-Villegas, Maricruz; Rincón‐Enríquez, Gabriel; Rodríguez-González, Vicente; García-Varela, Rebeca; Lozano, Luis Marcelo; Navarro-López, Diego Eloyr; Sánchez-Ante, Gildardo; Corona-Romero, Kaled; López-Mena, Edgar R.

doi:10.1016/j.apsusc.2021.151764

Cited by 23 publications

(11 citation statements)

References 63 publications

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“…For ZnO and Er:ZnO colloidal NPs, E g was ∼ 3.13 and 3.21 eV, respectively, and for the hybrid Ag/ZnO and Ag/Er:ZnO samples, E g was ∼ 3.11 and 3.21 eV, respectively (table 1). Thus, the apparent E g of Er:ZnO sample is slightly widened compared to that of ZnO NPs, and the observed bandgap widening could be attributed to the Burstein-Moss effect caused by Er-dopants [58,73]. No obvious change was observed in the ZnO bandgap upon hybridizing ZnO and Er:ZnO NPs colloidal samples with Ag NPs.…”

Section: Resultsmentioning

confidence: 90%

Photocatalytic activity of hybrid Ag/Er:ZnO nanoparticles synthesized by pulsed laser ablation in distilled water

Ahmed¹,

Imam²

2023

Phys. Scr.

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We have studied the photocatalytic performance of ZnO, Er:ZnO, hybrid Ag/ZnO, and Ag/Er:ZnO colloidal nanoparticles (NPs) synthesized by pulsed laser ablation of stoichiometric targets and silver plate in double distilled water. The X-ray diffraction (XRD) analysis revealed the polycrystalline structure of the ablated NPs. The morphology of the nanoparticles was examined by the transmission electron microscope (TEM). The optical properties of the prepared colloidal NPs were investigated by the UV-visible absorption and photoluminescence spectroscopies. The photodegradation of the Rhodamine 6G organic dye was utilized to evaluate the photocatalytic activity of the produced colloidal NPs under illumination by UV light. The hybrid Ag/Er:ZnO colloidal NPs showed enhanced photodegradation efficiency of 96.4%, after 45 min of UV irradiation, compared to 79.7% of the pristine ZnO NPs. The obtained results point out the enhancing effect of the dopants on the photocatalytic performance of ZnO, and further demonstrate the pulsed laser ablation of bulk materials in pure water as a fast and eco-friendly technique for producing efficient nanoparticle photocatalysts.

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Section: Resultsmentioning

confidence: 90%

Photocatalytic activity of hybrid Ag/Er:ZnO nanoparticles synthesized by pulsed laser ablation in distilled water

Ahmed¹,

Imam²

2023

Phys. Scr.

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“…16 ZnO:Er nanoparticles exhibit antimicrobial activity. 17 Zinc oxide is also known for its scintillating abilities. For example, ZnO:Cu was used in cathodoluminescence screens, 18 while ZnO:Ga is also considered for use in alpha particle scintillation screens.…”

Section: Introductionmentioning

confidence: 99%

“…ZnO:Er nanorods find application in optical thermometry, while ZnO:Er nanoparticles covered with polyethylene glycol are suitable for cell imaging . ZnO:Er nanoparticles exhibit antimicrobial activity . Zinc oxide is also known for its scintillating abilities.…”

Section: Introductionmentioning

confidence: 99%

Peculiarities Related to Er Doping of ZnO Nanorods Simultaneously Grown as Particles and Vertically Arranged Arrays

Buryi,

Remeš,

Hájek

et al. 2023

J. Phys. Chem. C

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A unique set of undoped and Er-doped ZnO nanorods that are grown by a hydrothermal method under exactly the same conditions in the form of 2D nanoarrays on the SiO2/ZnO substrate or in a free-standing form on random nucleation seeds in solution were investigated. Their optoelectronic properties are characterized by photo-, radio-, and cathodoluminescence in correlation with scanning electron microscopy, energy-dispersive X-ray spectroscopy, electron paramagnetic resonance spectroscopy, resonance Raman spectroscopy, and theoretical computing by using density functional theory. We demonstrate that erbium is incorporated at a regular zinc site in the 2D arrays and as additional nucleation seeds in the free-standing nanorods. The deposited nanorods contain a larger number of shallow donors (by about 2 orders of magnitude) and a larger number of free carriers (by about 1 order of magnitude) as compared to the free-standing ones. It is related to the fact that the nanorods grow about 1 order of magnitude larger and in polycrystalline bunches on the random seeds in solution compared to the deposited arrays. Doping by Er slows the excitonic emission from 465 to 522 ps.

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“…Applications of such material include the creation of optoelectronic devices, gas sensors, light-emitting diodes (LEDs), photodetectors, antireflective coatings, acoustic transducers, transparent conductive electrodes, heterogeneous catalysis, photocatalytic devices, and optical windows in solar panels [3][4][5][6][7][8][9][10][11]. They are also used for the manufacture of varnishes, paints, printer inks, in the beauty industry for cosmetics, cleaning products such as soaps, in medicine to produce drugs for Sun protection, balms, as a DNA (deoxyribonucleic acid) sequence sensor, in addition to its important applications as an anticancer, antibacterial, antidiabetic, anti-inflammatory substance [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

How Cr doping influences on the properties of ZnO nanoparticles obtained by aqueous synthesis: Exploring at low Cr concentrations

et al. 2023

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A detailed physico-chemical study of Cr3+-doped ZnO nanoparticles (NPs) obtained via aqueous synthesis was carried out. The NPs acquire greenish tonality as the Cr concentration increased. High efficiency of Cr incorporation into the ZnO lattice was found up to approximately 1 at% Cr. The ZnO:Cr NPs show wurtzite hexagonal phase with a lattice compressed for low Cr concentration and tensed for higher concentrations. Structural, chemical and optical analyses indicate that for low Cr concentration Cr occupies the Zn vacancy sites, owing to the reduction in acceptor compensation by passivating the Zn vacancies and the contribution of the unpaired electron of Cr3+, which induces an increase of electron concentration, changes in the conductivity, transport of carriers, optical properties and ferromagnetic properties, among others. At higher Cr concentrations, the passivation of Zn vacancies by Cr atoms reduces the acceptor contribution, and substantial substitution of Zn atoms by Cr atoms in the ZnO lattice strengthens the retention of O atoms in the Cr-O bonds. This results in a reduction in O vacancy concentration, donor contribution, strain, electron concentration, and luminescence intensity.

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Influence of erbium doping on zinc oxide nanoparticles: Structural, optical and antimicrobial activity

Cited by 23 publications

References 63 publications

Photocatalytic activity of hybrid Ag/Er:ZnO nanoparticles synthesized by pulsed laser ablation in distilled water

Photocatalytic activity of hybrid Ag/Er:ZnO nanoparticles synthesized by pulsed laser ablation in distilled water

Peculiarities Related to Er Doping of ZnO Nanorods Simultaneously Grown as Particles and Vertically Arranged Arrays

How Cr doping influences on the properties of ZnO nanoparticles obtained by aqueous synthesis: Exploring at low Cr concentrations

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