Ultrasonic-induced synthesis of CeO2 nanotubes

Miao, Jianjun; Wang, Hui; Li, Yuru; Zhu, Jianxi; Zhu, Jun‐Jie

doi:10.1016/j.jcrysgro.2005.04.058

Cited by 90 publications

(44 citation statements)

References 22 publications

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“…Nanoparticles possess several physical and chemical properties, due to their high surface-to-volume ratio. Cerium oxide (CeO 2 ) is a semiconductor with a wide band-gap energy (3.19 eV) and a large exciton-binding energy [1], which is used for a wide range of applications such as electronics [2], bio-sensors [3], drug delivery [4], agriculture [5], medical field [6], etc. In general, CeO 2 nanoparticles (CeO 2 NPs) could be synthesized by physical, chemical, and biological (plants and microorganisms) methods [7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Mycogenesis of cerium oxide nanoparticles using Aspergillus niger culture filtrate and their applications for antibacterial and larvicidal activities

et al. 2015

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Cerium oxide nanoparticles (CeO 2 NPs) were synthesized using Aspergillus niger culture filtrate. The mycosynthesized CeO 2 NPs were characterized by UVVisible (UV-Vis), Fourier Transform Infrared (FT-IR), X-ray diffraction (XRD), Micro Raman, Thermogravimetric/Differential Thermal Analysis (TG/DTA), Photoluminescence, and Transmission Electron Microscopy (TEM) analyses. UV-Vis spectrum exhibited a corresponding absorption peak for CeO 2 NPs at 296 nm, and the functional groups present in the fungal filtrate responsible for the synthesis of NPs were analyzed by FT-IR. The further characterization of the mycosynthesized CeO 2 NPs revealed particles of the cubic structure and spherical shape, with the particle sizes ranging from 5 to 20 nm. The antibacterial activity of CeO 2 NPs was examined in respect of two Gram-positive (G?) bacteria (Streptococcus pneumoniae, Bacillus subtilis) and two Gram-negative (G-) bacteria (Proteus vulgaris, Escherichia coli) by disk diffusion method. The test results for CeO 2 NPs at a concentration of 10 mg/mL showed higher activities on the zone of inhibition of up to 10.67 ± 0.33 and 10.33 ± 0.33 mm against Streptococcus pneumonia and Bacillus subtilis, respectively, The CeO 2 NPs caused 100 % mortality on first instar of Aedes aegypti at 0.250 mg/L concentration after 24-h exposure. The mycosynthesis of CeO 2 NPs is a simple, cost-effective and eco-friendly approach and it will also potentially helpful to control pathogenic bacteria and dengue vector.

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Section: Introductionmentioning

confidence: 99%

Mycogenesis of cerium oxide nanoparticles using Aspergillus niger culture filtrate and their applications for antibacterial and larvicidal activities

et al. 2015

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“…blueshift. [45] The optical bandgap E g can be determined by the following equation for a semiconductor: (αhυ) n = B(hυ -E g ), [46,47] where hυ is the photon energy, α is the absorption coefficient, B is a constant relative to the material, and n is either 2 for a direct transition or 1/2 for an indirect transition. The (αhυ) 2 ≈ hυ curve for the sample shown in Figure 6b.…”

Section: Resultsmentioning

confidence: 99%

A Novel Route Toward Fabrication of Twofold‐Shaped CeO₂ Dendrites

Zhang¹,

Tong²,

Li³

et al. 2008

Eur J Inorg Chem

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Highly uniform twofold-shaped CeO 2 dendrites were successfully prepared in large quantities by using an approach that involves the thermal decomposition of the precursor. The precursor with an average size of 10 µm was prepared from the reaction of Ce(NH 4 ) 2 (NO 3 ) 6 with CO(NH 2 ) 2 at 160°C in a water/diethanolamine (DEA) complex solution. The influence of DEA on dendrite formation is discussed. The dendritic pattern of precursor is almost retained in the as-pre-

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“…A simple sensing system in solution is established and the sensor response is examined by the current-potential (I-V) measurements, along with the cyclic voltammetry technique to evaluate the electrode reaction kinetics. [33,34].…”

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confidence: 99%

Highly sensitive ethanol chemical sensor based on nanostructured SnO2 doped ZnO modified glassy carbon electrode

Harraz

Ismail

Ibrahim

et al. 2015

Chemical Physics Letters

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Ultrasonic-induced synthesis of CeO2 nanotubes

Cited by 90 publications

References 22 publications

Mycogenesis of cerium oxide nanoparticles using Aspergillus niger culture filtrate and their applications for antibacterial and larvicidal activities

Mycogenesis of cerium oxide nanoparticles using Aspergillus niger culture filtrate and their applications for antibacterial and larvicidal activities

A Novel Route Toward Fabrication of Twofold‐Shaped CeO₂ Dendrites

Highly sensitive ethanol chemical sensor based on nanostructured SnO2 doped ZnO modified glassy carbon electrode

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Ultrasonic-induced synthesis of CeO2 nanotubes

Cited by 90 publications

References 22 publications

Mycogenesis of cerium oxide nanoparticles using Aspergillus niger culture filtrate and their applications for antibacterial and larvicidal activities

Mycogenesis of cerium oxide nanoparticles using Aspergillus niger culture filtrate and their applications for antibacterial and larvicidal activities

A Novel Route Toward Fabrication of Twofold‐Shaped CeO2 Dendrites

Highly sensitive ethanol chemical sensor based on nanostructured SnO2 doped ZnO modified glassy carbon electrode

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A Novel Route Toward Fabrication of Twofold‐Shaped CeO₂ Dendrites