Results 201 to 210 of about 22,217 (245)

Ceria and ceria-based nanostructured materials for photoenergy applications

Nano Energy, 2017
Abstract With the fast-growing populations and development, energy crisis have raised critical requirements for utilization of clean solar energy. Some effective methods to capture and convert the solar energy now include photocatalytic degradation, hydrogen production, dye-sensitized solar cells, and photocatalytic selective reaction of organic ...
Shilei Xie, Zilong Wang, Faliang Cheng, Peng Zhang, Wenjie Mai, Yexiang Tong   +5 more
openaire   +1 more source

Reactivity of ceria, Gd- and Nb-doped ceria to methane

Applied Catalysis B: Environmental, 2002
Abstract The reactivity of methane with ceria, and ceria doped with either 10 cation% Gd, 1.4 cation% Nb, 5 cation% Nb has been investigated using temperature-programmed reaction (TPRx) and isothermal reaction at 900 °C in 5% methane in argon. The influence of the calcination atmosphere on the Nb-doped ceria has also been studied.
E Ramı́rez-Cabrera, A Atkinson, D Chadwick   +2 more
openaire   +1 more source

Sintering behaviors of ceria and gadolinia-doped ceria

Solid State Ionics, 1998
Abstract Sintering behaviors of ceria powders with large and fine particle size and gadolinia-doped ceria powders with a fine particle size have been studied by measuring density and grain size as a function of sintering time. Densification rate and grain growth rate of ceria with a fine particle size were larger than those with a large particle size.
openaire   +1 more source

Redox behavior of gold supported on ceria and ceria-zirconia based catalysts

Journal of Rare Earths, 2009
Abstract A series of gold-based catalysts were prepared by deposition precipitation or incipient wetness impregnation on Ce x Z 1– x O 2 solid solutions (0.28≤ x ≤1.00). The morphological and structural characterization of these catalysts were carried out with X-ray diffraction, transmission electron microscopy (TEM) analysis and physical ...
VICARIO, Michela, LLORCA J, BOARO, Marta, DE LEITENBURG, Carla, TROVARELLI, Alessandro   +4 more
openaire   +2 more sources

Engineering the Bioactivity of Flame-Made Ceria and Ceria/Bioglass Hybrid Nanoparticles

ACS Applied Materials & Interfaces, 2018
Despite its use as a highly efficient and reusable catalyst in research and industrial settings, cerium oxide nanoparticles or nanoceria have yet to gain a foothold in the biomedical field. A variety of beneficial effects of nanoceria have been demonstrated, including its use as an inorganic nanoenzyme to mimic antioxidant enzymes, to protect mammalian
Martin T. Matter, Lea A. Furer, Fabian H. L. Starsich, Giuseppino Fortunato, Sotiris E. Pratsinis, Inge K. Herrmann   +5 more
openaire   +3 more sources

Statistical thermodynamics of non-stoichiometric ceria and ceria zirconia solid solutions

Physical Chemistry Chemical Physics, 2016
The statistical mechanics of lattice configurations are used to develop an analytical model of non-stoichiometry in ceria and ceria zirconia.
Bulfin, Brendan, Hoffmann, Lukas, de Oliveira, Lamark, Knoblauch, Nicole, Call, Friedemann, Roeb, Martin, Sattler, Christian, Schmücker, Martin   +7 more
openaire   +3 more sources

Operando Raman-online FTIR investigation of ceria, vanadia/ceria and gold/ceria catalysts for toluene elimination

Journal of Catalysis, 2018
Abstract Toluene oxidation on three ceria catalysts, CeO2, VOx/CeO2 and Au/CeO2, was investigated by an operando Raman-online FTIR reactor cell. The reactive surface oxygen sites were preferred sites for vanadium and gold deposition. The deposited vanadium existed as V5+, while most of the gold was in Au+ state and roughly a third of ceria was in the
Wang, Qingyue CBME, Yeung, King Lun, Banares, Miguel A.   +2 more
openaire   +2 more sources

Defect Chemistry of Ceria Nanorods

The Journal of Physical Chemistry C, 2014
Ceria nanorods were investigated using in-situ Raman and FTIR spectroscopy for CO adsorption and subsequent reaction with water at 200 °C and 350 °C. The involvement of defects in ceria nanorods during CO adsorption and reaction with H2O is dependent on the temperature.
Agarwal, Shilpa, Zhu, X., Hensen, E.J.M., Lefferts, Leonardus, Mojet, Barbara   +4 more
openaire   +2 more sources

Ceria‐ and Cu‐Doped Ceria Nanocrystals Synthesized by the Hydrothermal Methods

Journal of the American Ceramic Society, 2008
Ceria‐ or Cu‐doped ceria nanocrystals with a uniform diameter of about 4–5 nm have been successfully synthesized directly via a hydrothermal treatment of the precipitate Ce(OH) 3 (purple) or Cu‐doped Ce(OH) 3 in a strongly
Jiacheng Wang, Qingfeng Liu, Qian Liu
openaire   +1 more source

Steam reforming of methanol over ceria and gold-ceria nanoshapes

Applied Catalysis B: Environmental, 2010
In this work we have found that a small amount (∼1 at.%) of gold deposited on ceria nanorods exhibits excellent catalytic activity for the low-temperature steam reforming of methanol (SRM). Gold clusters (
Nan Yi, Rui Si, Howard Saltsburg, Maria Flytzani-Stephanopoulos   +3 more
openaire   +1 more source