The electrochemical behavior of Yb(III) in LiCl–KCl–YbCl3 melts on W and liquid Zn electrodes was studied at 813 K. On the W electrode, the diffusion coefficient of Yb(III) was determined to be 3.38 × 10−5 cm2 s−1. The apparent standard Gibbs energy of the reaction: YbCl2+1/2Cl2→YbCl3 in LiC...

This work presents the electrochemical study of Yb(III) ions in molten alkali metal chlorides in the temperature range 723–1073 K. Transient electrochemical techniques such as linear sweep, cyclic and square wave voltammetry, and potentiometry at zero current have been used to investigate the r...

The dissolution of scandium metal (Sc°) in concentrated hydrochloric acid was found to generate a wide variety of products based on the reaction/processing conditions. The compounds [Sc(H2O)6]3[Cl] (1) and [ScCl2(H2O)4][Cl]·H2O (2) were isolated from the above reaction when an ice bath is used...

The deep removal of Al, Fe(Ⅱ/Ⅲ), Ca, Zr, Ti and Si from scandium chloride solution was carried out by using 732-type strong acid cation exchange resin. The effects of pH value, contact time and complexing agents (EDTA) on the purification process are investigated. The results indicate that the...

Four novel samarium complexes were prepared by reacting samarium(III) nitrate with 8-hydroxyquinoline, 2-methyl-8-hydroxyquinoline, and 1,10-phenanthroline and utilized as emitting materials in the electroluminescence device. All complexes were characterized by elemental analysis, infrared, UV–...

Grain boundary conductivity of samarium doped ceria electrolyte (SDC) depends on the space charge potential and oxygen vacancy concentration existing at the grain boundary region. Here, we report the effect of co-doping 1 mol% divalent alkaline earth metals in samarium doped ceria (Ce0.78Sm0.2A0...

To evaluate the reproductive toxicity of samarium, a widely used rare earth element, male ICR mice were orally exposed to samarium nitrate for 90 days for lesion evaluation in the testis. Decreased organ coefficients, disorganized seminiferous tubules, and decreased spermatogenic cells and sperm...

The reactive extraction of Sm(III) from aqueous nitrate solution with D2EHPA and Cyanex 301 in kerosene was investigated by single drop column method. Various parameters affecting the extraction process including the column height, nozzle diameter and concentration of extractant, hydrogen ions a...

Samarium doped BiPO4 photocatalyst was synthesized by a simple hydrothermal method. The structural, morphological and optical properties were investigated using XRD, FTIR, SEM, EDS, and UV-DRS techniques. The XRD analysis confirms pure hexagonal and well crystallized structure of the synthesized...

A series of Cu/Al2O3 catalysts with different contents of samarium were prepared by the incipient wetness method and used in hydrogen production by methanol steam reforming. The role of samarium addition and the effects of the samarium loading on the surface structure and catalytic properties we...

Solvent extraction studies of Sm (III) from aqueous nitrate solution have been focused on using Cyanex301 (bis-2,4,4 trimethylpentyl dithiophosphinic acid) alone and in combination with D2EHPA (di-2-ethylhexyl phosphoric acid). The effect of operating parameters, such as time, nitrate ion, aqueo...

Storage phosphors with efficient photostimulated luminescence (PSL) and/or persistent luminescence (PersL) are in great demand for a range of applications. In this paper, PSL, PersL and thermoluminescence (TL) of samarium ions doped in a macroscopic and sub-micron crystals of BaFCl are reported,...

Trivalent samarium has been found to be reduced to the divalent state during the air firing process of the preparation of 5% Sm:Ba2B10O15. This is the first time that the formation of divalent samarium has been reported as a function of the preparation of this material. The product was prepared ...

Kinetics and extraction of samarium(III) from aqueous chloride medium at constant ionic strength were studied using a sodium salt of bis(2,4,4-trimethylpentyl) phosphinic acid (CYANEX 272®) in kerosene. The different parameters affecting the extraction of Sm(III) under equilibrium conditions wer...

Samarium doped BaNaB9O15 and SrNaB9O15 were prepared from 5% samarium:95% alkaline earth metal co-precipitated borates. Sodium tetraborate and boric acid were ground with the precipitates, then the composites were wetted with glacial acetic acid and fired in air. The formation of the BaNaB9O15 a...

Samarium is a rare-earth metal with several applications in materials science. It is used in organic chemistry as a reducing agent and it is the active payload in samarium-153 lexidronam, a drug being used for palliative treatment of bone metastases. Recently, the encapsulation of samarium compo...

This work concerns the electrochemical extraction of samarium from molten chlorides. In this way, the electrochemical behaviour of samarium ions has been investigated in the eutectic LiCl–KCl at the surface of tungsten, aluminium and aluminium coated tungsten electrodes. On a W inert electrode ...

This work firstly presents an electrochemical study of samarium extraction from Sm2O3 in the LiCl–KCl–AlCl3 melts. Gibbs energy calculation shows that AlCl3 can favorably chloridize Sm2O3 and release Sm3+ ions under this condition. The electrochemical behaviors of Al3+, Sm3+ and the mechanisms...

The deposition of praseodymium oxide (PrO2) films on diamond electrodes is of interest for electrochemical applications, because of the catalytic and permselective properties of this material. In this work, PrO2 was deposited on commercial boron-doped diamond (BDD) electrodes from solutions of p...

In the current paper, the graphene oxide (GO) nano-sheets were benefited as a promising nano-carrier for Pr3+ cations for corrosion inhibition. The optimal experimental condition for Pr3+ cations loading was obtained. The thermodynamic and kinetic of adsorption process were studied in detail. Ac...