The dimeric alkyl rare earth complexes [Cp′2SmMe]2 and [Cp′2NdMe]2 (Cp′=C5H4tBu) can be isolated in the solid state, whereas formation of the hydride [Cp′2NdH]2 does not occur and the hydride [Cp′2SmH]2 is only depicted in solution. Neodymium hydrides are characterized in solution as solvat...

Non-stoichiometric samarium monosulfide (SmSx, 0.55≤x≤1.2) was synthesized from Sm2S3 and SmH3 at 1273 K for 3 h under vacuum. The influence of reaction ratio of Sm2S3 to SmH3 on the fabrication of SmSx was investigated. The fabrication of SmS required the molar ratio of Sm2S3 to SmH3 above 1....

A 55-nm samarium film capped with a 15-nm palladium overlayer switched from a metallic reflecting to a semiconducting, transparent in visible state during ex-situ hydrogen loading via electrochemical means in 1 M KOH electrolytic aqueous solution at room temperature. The optical transmittance ex...

All-solid-state cells are safe, and have high energy densities and power densities. Sulfide-based solid electrolytes (SEs) exhibit high ionic conductivities and favorable mechanical properties allowing for the facile preparation of all-solid-state cells via simple mixing and cold-pressing proces...

Beryllium–copper alloys present a combination of high tensile and compressive strength, high hardness, good thermal conductivity and high resistance to seizing and galling (conditions where metals begin to cold weld or bond under the joint influence of compressive stress and relative motion at ...

Pressure-induced phase transition, thermodynamic and elastic properties of BeS are investigated by ab-initio method and quasi-harmonic Debye model. The phase transition of BeS from ZB to RS occurs at 51.45 GPa accompanied by 11.23% volume collapse. Phase transition is due to S atom’s weakened e...

Beryllium (Be) sources, transport and sinks were studied in a coastal landscape where acidic soils (acid sulfate soils) have developed after drainage of fine-grained sulfide-bearing sediments. The study included the determination of total abundance and speciation of Be in a variety of solid and ...

The electronic transport properties of zigzag beryllium sulfide nanoribbons (ZBeSNRs) are investigated by first-principles calculations. The results indicate that the electrons flow mainly through the two edges of ZBeSNRs. The electron transmission pathways are analyzed in detail. The ZBeSNRs sh...

Beryllium sulfide (BeS) in different forms from molecule, bulk, monolayer (h-BeS), to the single-walled nanotube obtained by wrapping the h-BeS monolayer along the (n,0) hexagonal lattice vector for n varying from n = 6 to 64, has been examined. Density functional theory (DFT) with an all electr...

Hybridized Z-BexSyCz (x+y+z=16) systems connected by zigzag beryllium-sulfide (BeS) and graphene nanoribbons are theoretically designed, and their electronic transport characteristics are explored by first-principles approach. For the hybridized systems with unequal number of x and y, i.e. z is ...

Electronic and optical properties of two-dimensional graphene-like structure of beryllium sulfide (BeS) have been studied in the framework of the density functional theory. Different values of stress and strain are exerted for tuning electronic and optical parameters. The electronic results show...

The mineral beryllonite has been characterized by the combination of Raman spectroscopy and infrared spectroscopy. SEM–EDX was used for the chemical analysis of the mineral. The intense sharp Raman band at 1011 cm−1, was assigned to the phosphate symmetric stretching mode. Raman bands at 1046, ...

A new class of strong inorganic acids is designed using substitution of the hydrogen atoms of H2SO4 and H3PO4 by BX2 and BeX moieties (X: H, F, Cl, CN, CF3). The acidities of these compounds are assessed by B3LYP/6-311++G(d,p) method in gas phase. These boron and beryllium derivatives are strong...

Industrialization and inevitable mining has resulted in the release of some metals in environments, which have numerous industrial roles on one hand and also showed environmental toxicity on other hand. Beryllium is one of them, it has been used in number of industries however its excess use or ...

A new 2D monolayer namely penta-BeP2 carried out by the density functional theory is reported. Our simulations indicate that the 2D penta-BeP2 shows good structural, dynamical and thermal stabilities as demonstrated by cohesive energy calculation, phonon dispersion simulation, and molecular dyna...

Three new organically templated beryllium phosphate and phosphites, [C2H8N][Be2(PO4) (HPO4) (H2O)]·(H2O)0.5 (1), [C3H12N2][Be3(HPO3)4] (2) and [C6H18N2][Be3(HPO3)4] (3), have been synthesized and structurally characterized by single-crystal X-ray diffraction analyses. The structure of 1 consist...

Three new beryllium phosphates, namely, H3aep·Be2(PO4)2(H2PO4)·H2O (1), H2tmdp·Be3(HPO4)3(PO4CH3)·2.25H2O (2), and H2dmpda·Be3(PO4)(HPO4)2(H2PO4) (3), were prepared under solvothermal conditions. These compounds display different open-framework structures with hcb (for 1), sql (for 2), and ...

According to World Health Organization (WHO), fluoride has a narrow prescribed concentration level in drinking water ( carbonate > sulfate > nitrate > chloride. Results from this study revealed the potential utility of Al2O3 nanoparticles for defluoridation of water.

Groundwater is the primary source of water in the Upper East Region of Ghana, and is generally considered a safe source of drinking water; but there are pockets where the groundwater contains high concentrations of fluoride due to the dissolution of minerals in the local granite. The goal of thi...

Beryllium, CAS#: 7440-41-7, was discovered as an element in 1797. Beryllium is an important industrial metal because of its material properties; that is, it is lighter than aluminum and six times stronger than steel. Its use in metallurgy and electrical components were largely developed in the 1...