Cerium oxide nanoparticles prepared in self-assembled systems

Bumajdad, Ali; Eastoe, Julian; Mathew, Asha

doi:10.1016/j.cis.2008.10.004

Cited by 125 publications

(92 citation statements)

References 148 publications

(168 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Synthesis techniques include solution-based techniques such as coprecipitation [9,10], hydrothermal [11], micro-emulsion [12], sol-gel [13,14], solution combustion, electrochemical methods and solid-based techniques such as mechanochemical method, chemical vapour deposition [15] and sputtering [16]. The present work emphasises the effect of synthesis conditions on the crystallite size, lattice parameter and lattice strain on ceria nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Investigation of size dependency on lattice strain of nanoceria particles synthesised by wet chemical methods

Kurian¹,

Kunjachan²

2014

Int Nano Lett

100

View full text Add to dashboard Cite

An investigation of the influence of synthesis conditions on the crystallite size, lattice parameter and lattice strain of ceriumdioxide nanoparticles synthesised by coprecipitation and sol-gel processes is presented. The effect of initial precursors, precipitation and calcination temperatures, aging time and molar concentrations of precursor solution on particle size and lattice parameter has been studied. The physicochemical characterisation was performed using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray analysis (EDX), and thermal analysis (TG-DTA). XRD profile indicates the presence of cubic fluorite-structured nanoceria particles. The average crystallite size of the samples determined by Debye-Scherrer formula ranges from 4.2 to 36.9 nm. Lattice parameters vary from 5.37 to 5.44 Å . Lattice strain of the samples was analysed using Williamson-Hall analysis since these relate to imperfections and distortions in the crystal structure. It is found that ceria reduces strain by lattice expansion which is pronounced in lower dimensions.

show abstract

Section: Introductionmentioning

confidence: 99%

Investigation of size dependency on lattice strain of nanoceria particles synthesised by wet chemical methods

Kurian¹,

Kunjachan²

2014

Int Nano Lett

100

View full text Add to dashboard Cite

show abstract

“…The cerium oxide nanoparticles (CeO 2 NP s ) have unique structure because of their broad applicability to various areas such as microelectronics, optoelectronics, fuel cell technologies, gas sensors, solid state electrolytes and antimicrobial activities [2][3][4] . There are several methods have been proposed for the synthesis of CeO 2 nanoparticles [5][6][7][8] . The hydrothermal method has advantages over other methods such as efficient synthesis process and morphology controlled growth.…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal Synthesis of Gadolinium (Gd) Doped Cerium Oxide (CeO2) Nanoparticles: Characterization and Antibacterial Activity

Khadar¹,

Balamurugan²,

Devarajan³

et al. 2017

Orient. J. Chem

View full text Add to dashboard Cite

This present study has been described the synthesis, characterization and antibacterial activity of gadolinium doped cerium oxide nanoparticles. The nanoparticles were prepared by hydrothermal method with various concentrations of gadolinium ranges from 2 mol% to 8 mol%. The X-ray diffraction (XRD) pattern revealed the face-centered cubic structure with crystalline size of 58.3 nm to 57.4 nm with increasing the concentration of gadolinium (2 mol% to 8 mol%). The Ce-O chemical bonding nature was confirmed using Fourier transform infrared spectrometer (FTIR). The field emission scanning electron microscope (FESEM) exhibited fascinating shapes like cube and square of nanoparticles. UV spectrophotometer used to measure the optical behaviors of CeO 2 nanoparticles. Band-edge absorption of CeO 2 nanoparticles blue shifted upon increasing the gadolinium concentration as compared to undoped CeO 2 nanoparticles. The emission behavior of nanoparticles was examined by photoluminescence (PL) spectroscopy. PL spectra reveals a peak shift of CeO 2 emission upon gadolinium doped due to oxygen defect. The gadolinium doped CeO 2 nanoparticles showed better antibacterial activity against the pathogenic bacteria such as Escherichia coli, Staphylococcus aureus, Bacillus cereus and Salmonella typhi.

show abstract

“…The solubility of CeO 2 decreases with the pH increase, and particles with more surface defects were generated. However, the hydrated cerium oxide nanoparticles possess both acidic and alkaline characteristics: due to the loss of protons, their surface demonstrates negative charges at alkaline conditions-hydrogen ions can be gained from oxygen anions as well-and reveals positive charges at acidic solution (Bumajdad et al 2009;Lin et al 2012;Yan et al 2007).…”

Section: Resultsmentioning

confidence: 99%

Determination of Total Antioxidant Capacity of Rapeseed and Its By-Products by a Novel Cerium Oxide Nanoparticle-Based Spectrophotometric Method

Tułodziecka

Szydłowska‐Czerniak

2016

Food Anal. Methods

View full text Add to dashboard Cite

The antioxidant capacity (AC) of rapeseed, white flakes, and meal was determined by the novel cerium oxide nanoparticle-based (CeONP) method and a previously described assay based on the formation of silver nanoparticles (AgNP). Antioxidants present in rapeseed and its by-product extracts reduced cerium(IV) ions to red-purple solutions of cerium oxide nanoparticles at pH 5.6. The influences of time, temperature, pH, and the concentration of the cerium(IV) sulfate solution on cerium oxide nanoparticle generation were estimated. The average AC of the studied extracts of real samples ranged between 1037 and 3012 μmol sinapic acid (SA) 100 g −1 and 3859-12,534 μmol SA 100 g −1 for CeONP and AgNP assays, respectively. There is significant, positive correlation between the AC of the examined extracts determined by both analytical methods (r = 0.8189). Satisfactory values of relative standard deviation (RSD = 1.2-3.9 %) and recovery (95.8-103.3 %) demonstrate a good precision and accuracy of the novel CeONP method for the AC analysis of rapeseed and its byproducts.

show abstract

Cerium oxide nanoparticles prepared in self-assembled systems

Cited by 125 publications

References 148 publications

Investigation of size dependency on lattice strain of nanoceria particles synthesised by wet chemical methods

Investigation of size dependency on lattice strain of nanoceria particles synthesised by wet chemical methods

Hydrothermal Synthesis of Gadolinium (Gd) Doped Cerium Oxide (CeO2) Nanoparticles: Characterization and Antibacterial Activity

Determination of Total Antioxidant Capacity of Rapeseed and Its By-Products by a Novel Cerium Oxide Nanoparticle-Based Spectrophotometric Method

Contact Info

Product

Resources

About