Optical properties of Ce1−xPrxO2 powders and their applications to the coloring of ceramics

Olazcuaga, R.; Pollès, G. Le; Kira, Atsushi; Flem, Guillaume Le; Maestro, P.

doi:10.1016/0022-4596(87)90269-6

Cited by 28 publications

(21 citation statements)

References 3 publications

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“…At present, the following classical red pigments used on a large scale are: iron oxide (Fe 2 O 3 ) encapsulated in zircon (ZrSiO 4 ) matrix and lead oxide (Pb 3 O 4 ) in tin oxide (SnO 2 ) matrix give pale red or pink colors [2]. The red-orange pigments in the Cd(S x Se 1−x )-ZrSiO 4 system, and sodium urinate are toxic and unstable above 900 • C [3].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of the nanometric Pr-doped ceria

Matović

Bošković

Logar

et al. 2010

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of the nanometric Pr-doped ceria

Matović

Bošković

Logar

et al. 2010

Journal of Alloys and Compounds

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“…Because of their high toxicity, the use of the above pigments in many countries has increasingly been becoming the subject of strict control regulated by government legislation and regulations. At present, the following classical pigments used on a large scale are: iron oxide (Fe 2 O 3 ) encapsulated in zircon (ZrSiO 4 ) matrix and lead oxide (Pb 3 O 4 ) in tin oxide (SnO 2 ) matrix give pale red or pink colors [10]. The red-orange pigments in the Cd(S x Se 1−x )-ZrSiO 4 system, and sodium urinate are toxic and unstable above 900 ºC [11].…”

Section: Introductionmentioning

confidence: 99%

Influence of temperature and dopant concentration on structural, morphological and optical properties of nanometric Ce1−Er O2−δ (x = 0.05–0.20) as a pigment

et al. 2015

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Influence of temperature and dopant concentration on structural, morphological and optical properties of nanometric Ce1-xErxO2-(x = 0.05-0.20) as a pigment This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. KAUST Repository M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT AbstractCeramic pigments based on cerium oxide were synthesized by self-propagating room temperature method and their color properties were assessed from the viewpoint of potential environmentally nontoxic pink pigments. Thermal stabilities of the pigments were examined at 600, 900 and 1200 ºC. According to X-ray powder diffraction and Raman spectroscopy results, all obtained pigments were single-phase solid solutions of cerium oxide, independent of the concentration of dopants. The X-ray analysis showed that the crystallites were of nanometric dimensions, as recorded and by transmission electron microscopy analysis. Color characteristics of solid solutions, which depended on concentracion erbium ions and calcination temperature, M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPTand their position in the chromaticity diagram were studied by ultraviolet-visible spectrophotometry, which confirmed potential application of environmentally friendly pigments of desired color. The color efficiency of pigments was also evaluated by colorimetric analysis.

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“…However, prior studies have suggested the feasibility to stabilize Pr 4+ in several host lattices. In fact, the widely used industrially yellow ceramic pigment Pr x Zr 1-y Si 1-z O 4 (y + z = x) is a solid solution of Pr 4+ in the zircon host lattice as it has been proved by different authors [45]. Recently, Pawlak et al [14] reported absorption bands in the 430-500-, 570-620-, and 960-1,040-nm regions for (Y 1−x-y Pr x Mg y ) 3 Al 5 O 12 (x = 0.012, y = 5 x 10 −6 ) materials annealed in oxidizing (air) or reducing atmospheres (hydrogen/nitrogen).…”

Section: Resultsmentioning

confidence: 95%

Electrochemical characterization of praseodymium centers in Pr x Zr1−x O2 zirconias using electrocatalysis and photoelectrocatalysis

Doménech

Montoya

Alarcón

2011

J Solid State Electrochem

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The voltammetry of nanoparticles and scanning electrochemical microscopy are applied to characterize praseodymium centers in tetragonal and monoclinic zirconias, doped with praseodymium ions (Pr x Zr 1−x O 2 ), prepared via sol-gel routes. Doped zirconia nanoparticles were synthesized by a sol-gel liquid-phase route and characterized by different techniques, including X-ray diffraction powder pattern, ultraviolet-visible diffuse reflectance spectroscopy, infrared spectroscopy, and transmission electron microscopy (TEM). Gels annealed at around 400°C yielded tetragonal Pr x Zr 1−x O 2 phases. The monoclinic forms of Pr-doped ZrO 2 were obtained by annealing at temperatures higher than 1,100°C. TEM micrographs proved that the size of the nanoparticles produced was dependent on their crystalline form, around 15 and 60 nm for tetragonal and monoclinic, respectively. The electrochemical study confirmed that a relatively high content of praseodymium cation was in the chemical state (IV), i.e., as Pr 4+ , in both zirconia host lattices. The catalytic and photocatalytic effects of Pr 4+ centers located in the monoclinic zirconia lattice on nitrite reduction and oxygen evolution reaction were studied.

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Optical properties of Ce1−xPrxO2 powders and their applications to the coloring of ceramics

Cited by 28 publications

References 3 publications

Synthesis and characterization of the nanometric Pr-doped ceria

Synthesis and characterization of the nanometric Pr-doped ceria

Influence of temperature and dopant concentration on structural, morphological and optical properties of nanometric Ce1−Er O2−δ (x = 0.05–0.20) as a pigment

Electrochemical characterization of praseodymium centers in Pr x Zr1−x O2 zirconias using electrocatalysis and photoelectrocatalysis

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