Synthesis and characterization of CeO 2 nanoparticles via hydrothermal route

Panahi-Kalamuei, Mokhtar; Alizadeh, Sakineh; Mousavi‐Kamazani, Mehdi; Salavati‐Niasari, Masoud

doi:10.1016/j.jiec.2014.05.046

Cited by 164 publications

(38 citation statements)

References 24 publications

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“…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]. Nowadays, biological method offers more advantages such as cost effectiveness, large-scale commercial production, and less time-consuming process [16].…”

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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“…CeO 2 has shown good thermal and chemical stabilities, a high refractive index in the visible region (2.1-2.2), good transmittance in the visible spectrum and low cost due to the fact that it is one of the most abundant rare earth elements [13][14][15]. It has also potential applications such as in fuel and solar cells, catalysts, oxygen sensors, polishing agents, gate oxides, optical devices and coating materials [16][17][18]. Moreover, due to its broad band gap (BG) of 2.7-3.4 eV, depending on the preparation method, effective absorption in the ultraviolet range can be ensured by this material (λ < 400 nm) [7,19].…”

Section: Introductionmentioning

confidence: 99%

Thermal, Mechanical and UV-Shielding Properties of Poly(Methyl Methacrylate)/Cerium Dioxide Hybrid Systems Obtained by Melt Compounding

et al. 2015

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Thick and homogeneous hybrid film systems based on poly(methyl methacrylate) (PMMA) and CeO2 nanoparticles were synthesized using the melt compounding method to improve thermal stability, mechanical and UV-shielding properties, as well as to propose them for use in the multifunctional materials industry. The effect of the inorganic phase on these properties was assessed by using two different weight percentages of synthesized CeO2 nanoparticles (0.5 and 1.0 wt %) with the sol–gel method and thermal treatment at different temperatures (120, 235, 400, 600 and 800 °C). Thereafter, the nanoceria powders were added to the polymer matrix by single screw extrusion. The absorption in the UV region was increased with the crystallite size of the CeO2 nanoparticles and the PMMA/CeO2 weight ratio. Due to the crystallinity of CeO2 nanoparticles, the thermal, mechanical and UV-shielding properties of the PMMA matrix were improved. The presence of CeO2 nanostructures exerts an influence on the mobility of PMMA chain segments, leading to a different glass transition temperature.

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“…With such a diversity of applications, different forms (mesoporous membrane/film or composite membrane/ film particle) of cerium oxide nanoparticles have been suggested and resolved. Particularly, the nanoparticles of cerium oxide have been greatly used due to the significant size-induced property changes [12]. Largely, the nanoparticles of cerium oxide could be prepared by chemical, physical, and biological methods [13][14][15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Novel Photosynthesis of CeO2 nanoparticles from its salt with structural and spectral study

Mahmoud

2018

Egypt. J. Chem.

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T HE NANOPARTICLES of cerium oxide were synthesized using the novel photolysis method. The nanoparticles characterized by X-ray diffraction (XRD), UV-Visible spectroscope (UV-Vis), transmission electron microscope (TEM), scanning electron microscope (SEM), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS) and Photoluminescence spectrum (PL). The size and structure of nanoparticles were obtained from (XRD) and found to be 13nm and cubic structure. The results from (TEM) and (SEM) showed agglomeration of particles and it in nano size. Strong peak at 296nm appeared when using UV-Vis while six emission peaks showed from PL spectrum. The dielectric properties of nanoparticles were studied for different frequency and showed a decrease it with increased frequency.

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Synthesis and characterization of CeO 2 nanoparticles via hydrothermal route

Cited by 164 publications

References 24 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

Thermal, Mechanical and UV-Shielding Properties of Poly(Methyl Methacrylate)/Cerium Dioxide Hybrid Systems Obtained by Melt Compounding

Novel Photosynthesis of CeO2 nanoparticles from its salt with structural and spectral study

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