المنتجات

On-surface preparation of coordinated …

Meanwhile, the achievement of non-lanthanide metallic clusters stabilized by organic ligands on surfaces were also reported 25,26,27,28,29,30. Nevertheless, the on-surface preparation of ...

Lanthanide phosphine oxide complexes

Tricyclohexylphosphine oxide, Cy 3 PO, which has a similar bulk to t Bu 3 PO based on the cone angles of the respective phosphines [17] gives [Ln(NO 3) 3 (Cy 3 PO) 3]·xEtOH the structures of which show subtle effects due to the lanthanide contraction [18].All the complexes have the pseudo mer-octahedral arrangement with the lattice …

Open questions on bonding involving lanthanide atoms

Here, the authors elaborate on open questions regarding the bonding situation in mainly molecular lanthanide (4f) compounds, where, as compared to their actinide (5f) analogs in which covalency of ...

Vickers hardness study of zirconia partially stabilized with lanthanide …

Abstract. Vickers hardness of partially stabilized zirconia obtained by the addition of ceria, dysprosia, gadolinia and lanthana to monoclinic zirconia, has been studied. The best hardness of 8.68 GPa was achieved for compositions 13 mol.% CeO 2 -87 mol% ZrO 2. In this composition, the tetragonal phase was fully () stabilized.

Structural Effects of Lanthanide Dopants on Alumina

Abstract. Lanthanide (Ln 3+) doping in alumina has shown great promise for stabilizing and promoting desirable phase formation to achieve optimized physical and chemical properties. However ...

Stabilized Li‐Rich Layered Oxide Cathode by a …

Here, it is found that trace amount lanthanide element Yb doping can spontaneously form a surficial Yb-rich layer with high density of oxygen vacancy on the LLO-0.3% Yb (Li 1.2 Mn 0.54 Co 0.13-x Yb x Ni 0.13 O 2 where x = 0.003) cathodes, which mitigating lattice oxygen loss and the non-preferred layered-to-spinel-to-rock salt tri …

Selective hydrogenation of phenol to cyclohexanone …

Palladium nanoparticles supported on mixture of alumina and lanthanide oxides were synthesized and employed for one stage hydrogenation of phenol to cyclohexanone. A conversion of 99.8% with a selectivity of 96.3% to cyclohexanone was obtained using Pd supported on alumina/lanthanum oxide/cerium oxide with mole ratio …

Structural Stability and Conductivity of Phase‐Stabilized …

Bismuth oxide, when stabilized in the face-centered cubic phase by lanthanide doping, has one of the highest oxygen-ion conductivities among all solid oxide electrolytes. We previously reported a time-dependent aging phenomenon in phase-stabilized bismuth oxides that involves ordering of the anion sublattice, as distinct from a …

Lanthanide‒containing titanium-oxo clusters with high …

Two lanthanide-containing titanium-oxo clusters were synthesized and structurally characterized. The clusters possess ultrahigh stability in aqueous solutions …

List of Elements in the Lathanide Group

Here's a list of the 15 elements that are lanthanides, which run from atomic number 57 (lanthanum, or Ln) and 71 (lutetium, or Lu): Lanthanum: symbol Ln, atomic number 57. Cerium: symbol Ce, atomic number 58. Praseodymium: symbol Pr, atomic number 59. Neodymium: symbol Nd, atomic number 60. Promethium: symbol Pm, …

Size-dependent lanthanide energy transfer amplifies

We show that precise control over the domain size (or the thickness of the middle shell doped with ytterbium (Yb) and thulium (Tm) from 1.2 to 13 nm) increases the lanthanide energy transfer...

Transition Metal/Lanthanide-Nitrogen Double Bonds Co …

Our synthesis of the first heteronuclear dimetallic nitride clusterfullerene demonstrates the uniqueness of fullerene cage in costabilizing transition …

Alternating Copolymerization of CO2 and Cyclohexene Oxide …

Heteromultimetallic complexes consisting of three Co(II) ions and one lanthanide ion were synthesized and applied to the alternating copolymerization of CO 2 and cyclohexene oxide. Unlike the conventional cobalt(III) salen complexes, the high thermal stability of the present catalyst allowed us to reach a turnover number of 13000, …

Structural Stability and Conductivity of Phase-Stabilized …

Bismuth oxide, when stabilized in the face-centered cubic phase by lanthanide doping, has one of the highest oxygen-ion conductivities among all solid oxide electrolytes. We previously reported a time-dependent aging phenomenon in phase-stabilized bismuth oxides that involves ordering of the anion sublattice, as distinct from a …

Quantum Confined High-Entropy Lanthanide Oxysulfide …

Bulk lanthanide oxysulfides have been produced by three routes, viz., by the partial sulfurization of the desired lanthanide oxide using a sulfur containing agent such as ammonium ... A recent development in this chem. space is high entropy and entropy-stabilized inorg. materials, which took inspiration from preceding work on high entropy …

Up-conversion emission in transition metal and lanthanide …

Materials. Er/Eu 0.25 Yb 2.75 Al 5 O 12 and Er/Eu 0.25 Mo 1 Yb 1.75 Al 5 O 12 samples were prepared by a sol–gel method 1 followed by annealing at 1250 °C. Firstly, Al(OC 3 H 7) 3 was dissolved ...

Polymer-Stabilized Lanthanide Fluoride Nanoparticle Aggregates as

Polymer-Stabilized Lanthanide Fluoride Nanoparticle Aggregates as Contrast Agents for Magnetic Resonance Imaging and Computed Tomography ... We begin by discussing contrast agents has focused primarily on iron oxide general features of MRI contrast agents, including proper- superparamagnetic nanoparticles or Gd3þ-based nano- ties …

Effect of lanthanide dopants on stability of orthorhombic hafnium oxide

The calculated formation energy of Si-doped hafnium oxide is 108.88 Ry, which is much higher than the formation energy of Ce and Sm as shown in Fig. 3 and therefore the Si doping provides less stabilized orthorhombic phase of hafnium oxide in comparison to lanthanide doping. As a result, lanthanides, especially Ce and Sm, are …

General synthesis of large-area flexible bi-atomic subnano …

As proof of the actual application, the ultrathin lanthanide oxide nanoscroll/carbon nanotube film has been employed for the lithium-sulfur battery as the interlayer, which demonstrated excellent electrochemical performances. ... where the large pressure is induced by the distorted structure rather than the stabilized NS with released …

Graphene Oxide-Supported Lanthanide Metal-Organic …

Graphene Oxide-Supported Lanthanide Metal-Organic Frameworks with Boosted Stabilities and Detection Sensitivities. Anal Chem. 2020 Dec 1;92 (23):15550 …

Effect of Oxygen Partial Pressure on the Phosphorescence …

In this study, the effect of oxygen partial pressure on phosphorescence was investigated for different lanthanide ion-doped (Ln = Eu, Dy, Sm, Er) yttria-stabilized zirconia (YSZ).

Lanthanide Oxides: From Diatomics to High-Spin, Strongly …

Small lanthanide (Ln) oxide clusters present both experimental and theoretical challenges because of their partially filled, core-like 4f n orbitals, a feature that results in a plethora of close-lying and fundamentally similar electronic states. These clusters provide a bottom-up approach toward understanding the electronic structure of …

Lanthanide Oxides: From Diatomics to High-Spin, Strongly …

Abstract. Small lanthanide (Ln) oxide clusters present both experimental and theoretical challenges because of their partially filled, core-like 4f n orbitals, a feature …

Selective removal of some heavy metals from Lanthanide

They reported that the adsorption capacities of Ni 2+ were estimated to be 38.61 and 36.63 on graphene oxide and glycine functionalized graphene oxide (GO-G), respectively 32.

A full palette: Crystal chemistry, polymorphism

Lanthanide oxyhalides are ionic solids that adopt a variety of structure types. •. Non-hydrolytic condensation enables low-temperature synthesis of LnOX nanocrystals. …

Tunable High Entropy Lanthanide Oxide Microspheres via …

Finally, extension to multimetallic species permitted the generation of high-entropy lanthanide oxide microspheres, which were confirmed to have equimolar stoichiometries via energy dispersive spectroscopy and inductively coupled plasma mass spectrometry. ... H2O droplets (rdrop ∼ 700 nm), stabilized by Na dodecyl sulfate (SDS), …

Any oxide of a lanthanide (4,5) Crossword Clue

Answers for Any oxide of a lanthanide (4,5) crossword clue, 9 letters. Search for crossword clues found in the Daily Celebrity, NY Times, Daily Mirror, Telegraph and major publications. Find clues for Any oxide of a lanthanide (4,5) or most any crossword answer or clues for crossword answers.

Lanthanide Contraction

Lanthanide contraction refers to the decrease in the ionic radii of the elements as you move across the series from left to right. Learn more about lanthanide contraction, its consequences, causes and examples in this article ... The higher oxidation states of the lanthanides are stabilized by fluoride or oxide ions, while the lower …

Lanthanide‒containing titanium-oxo clusters with high …

Increasing the structural stability towards aqueous conditions is a great challenge for titanium-oxo clusters (TOCs). In this study, two lanthanide-containing titanium-oxo clusters formulated as [Er 2 Ti 8 (μ 3-O) 8 (μ 2-O) 2 (μ 2-OH) 2 (BA) 16] and [Yb 2 Ti 8 (μ 3-O) 8 (μ 2-O) 2 (μ 2-OH) 2 (BA) 16] (BA = benzoate) were synthesized, …

Synthesis of Homo- and Heteronuclear Rare-Earth Metal …

Alternating Copolymerization of CO2 and Cyclohexene Oxide Catalyzed by Cobalt–Lanthanide Mixed Multinuclear Complexes. Inorganic Chemistry 2020, 59 (12), 7928-7933.

Reactive flash sintering of the entropy-stabilized oxide …

The first entropy-stabilized oxide (ESO) was reported by Rost et al. in 2015 [4]. They showed the stabilization of an equimolar mixture of MgO, NiO, CoO, CuO, and ZnO into a single rock-salt phase in which the cations were randomly and homogeneously distributed in the cationic site of the structure [4]. This single-phase material would not be ...

Alternating Copolymerization of CO2 and Cyclohexene Oxide …

Heteromultimetallic complexes consisting of three Co(II) ions and one lanthanide ion were synthesized and applied to the alternating copolymerization of CO2 and cyclohexene oxide. Unlike the conventional cobalt(III) salen complexes, the high thermal stability of the present catalyst allowed us to reach a turnover number of 13000, …

Effect of lanthanide dopants on stability of orthorhombic hafnium oxide

CMOS compatible pyroelectric materials are suitable for their on-chip integration and miniaturization of infrared (IR) detectors. Here the stability enhancement of CMOS compatible hafnium oxide (HfO 2) has been investigated by doping of lanthanide elements.For energy computation of undoped and doped orthorhombic phase of HfO 2, …

Structural Stability and Conductivity of Phase‐Stabilized

Bismuth oxide, when stabilized in the face-centered cubic phase by lanthanide doping, has one of the highest oxygen-ion conductivities among all solid …