Results 291 to 300 of about 61,020 (334)

Photodissociation of Cerium Oxide Nanocluster Cations

The Journal of Physical Chemistry A, 2016
Cerium oxide cluster cations, CexOy(+), are produced via laser vaporization in a pulsed nozzle source and detected with time-of-flight mass spectrometry. The mass spectrum displays a strongly preferred oxide stoichiometry for each cluster with a specific number of metal atoms x, with x ≤ y.
S T, Akin, S G, Ard, B E, Dye, H F, Schaefer, M A, Duncan   +4 more
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Bonding of Histidine to Cerium Oxide

The Journal of Physical Chemistry B, 2013
Adsorption of histidine on cerium oxide model surfaces was investigated by synchrotron radiation photoemission, resonant photoemission, and near edge X-ray absorption fine structure spectroscopies. Histidine was evaporated in a vacuum onto ordered stoichiometric CeO2(111) and partially reduced CeO1.9 thin films grown on Cu(111). Histidine binds to CeO2
Tsud, Nataliya, Acres, Robert G., Iakhnenko, Marianna, Mazur, Daniel, Prince, Kevin C., Matolin, Vladimir   +5 more
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Cerium Oxide Nanoparticles are More Toxic than Equimolar Bulk Cerium Oxide in Caenorhabditis elegans

Archives of Environmental Contamination and Toxicology, 2013
Engineered cerium oxide nanoparticles (CeO2 NPs) are widely used in biomedical and engineering manufacturing industries. Previous research has shown the ability of CeO2 NPs to act as a redox catalyst, suggesting potential to both induce and alleviate oxidative stress in organisms.
M C, Arnold, A R, Badireddy, M R, Wiesner, R T, Di Giulio, J N, Meyer   +4 more
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Phase development of nanocrystalline cerium oxide via cerium sulfate

Journal of Crystal Growth, 2006
Abstract Nanograde cerium oxide is formed successfully by a normal-pressure aging process via cerium sulfate. The nanograde cerium oxide is formed by the precursor of cerium sulfate decomposition during aging in urea solution. There are two pH stages in the aging process: one is in pH=5–6 and the other is in pH=7–8. The first pH stage is the particle
Ming-Shyong Tsai, Xu-Zhu Xiao
openaire   +1 more source

Determination of the Cerium Oxidation State in Cerium Vanadate

Journal of the American Ceramic Society, 1995
Use of low‐quality fuels in gas turbines can lead to vana‐dium hot corrosion of stabilized‐zirconia turbine blade coatings. The stabilizing oxide reacts with V 2 O 5 in the melt, forming a vanadate, thus removing the stabilizer from the zirconia.
Richard F. Reidy, Karen E. Swider
openaire   +1 more source

Adsorption of nitric oxide on cerium oxide

Journal of Colloid and Interface Science, 1982
Abstract Adsorption of NO on evacuated CeO2 has been investigated by gravimetric, IR, and ESR measurements. On reduced sites, NO was decomposed into N2 or N2O accompanied by incorporation of oxygen into the surface. The oxygen adsorbed on the surface was identified by infrared study.
Miki Niwa, Yasunori Furukawa, Yuichi Murakami   +2 more
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Variation in Density of Cerium Oxide

Nature, 1947
The existence of polymeric varieties of cerium oxide was proposed so long ago as 18971, this contention being based, inter alia, upon the fact that the colour of the oxide is dependent, not only on its purity, but also upon the nature of the salt from which it is prepared by ignition.
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Magnetic susceptibility of cerium oxides

Journal of the Chemical Society A: Inorganic, Physical, Theoretical, 1969
The magnetic susceptibilities of CeO1·515, CeO1·662, CeO1·705, CeO1·780, CeO1·857, and CeO1·941 were measured as a function of temperature between 80 and 300°K. The results for CeO1·515 were compared with the magnetic susceptibility of the Ce3+ ion in dilute solid solution in LaO1·5.
L. M. Engelhardt, B. N. Figgis
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Cerium oxide for sunscreen cosmetics

Journal of Solid State Chemistry, 2003
Abstract Ultrafine particles of M n + -doped ceria ( M n + =Mg 2+ , Ca 2+ , Sr 2+ , Ba 2+ , Y 3+ , La 3+ , Nd 3+ , Sm 3+ , Eu 3+ , Tb 3+ ) for UV filter were prepared via soft solution chemical routes at 40°C. X-ray diffraction revealed that the prepared doped particles had the cubic fluorite structures although peak positions changed depending ...
Shinryo Yabe, Tsugio Sato
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Nanocrystalline Cerium Oxide Catalytic Materials

1994
Nanocrystalline cerium oxide was synthesized by inert gas condensation of a metallic cerium precursor, followed by oxidation. The structure of the resulting material was characterized by transmission electron microscopy (TEM), wide-angle x-ray diffraction (XRD) and nitrogen adsorption.
A. Tschöpe, J. Y. Ying
openaire   +1 more source