Preliminary experimental results about precipitation of strontium molybdate particles show that they have morphology as hierarchical agglomerates [A. Cameirão, R. David, F. Espitalier, F. Gruy, Multiple agglomeration in strontium molybdate precipitation, 16th ISIC, 2005, pp. 355–360]. The preci...

The bifunctional activity of strontium molybdate (SrMoO4) in the photodegradation and electrocatalytic determination of diphenylamine (DPAH) was identified and demonstrated. The photocatalytic and electrocatalytic activity of SrMoO4 were influenced by its structural properties. Those structural ...

It was initially used a 23 experimental design with central point in triplicate to synthesize strontium molybdate by EDTA-citrate combined complexation method, where the influence of pH (6, 7.5 e 9), calcining time (3, 4 e 5 h) and heating rate (5, 7 e 10 °C min−1) was investigated. Single-phas...

Strontium iodate, Sr(IO3)2, has been prepared by hydrothermal reactions at 170 °C. The X-ray single-crystal structural analysis showed that it crystallizes in a new structure type with space group P1̄, a=7.0130(7) Å, b=7.0520(8) Å, c=13.088(1) Å, α=84.12(1)°, β=84.80(1)°, γ=63.48(1)°, Z=4...

A single crystal of yttrium orthosilicate was investigated by FTIR-spectroscopy in the spectral region of 150⬜2000 cm↙1 to properly characterize this laser medium. The five reflection spectra of the crystal in principal orientation were evaluated by dispersion analysis and with the dispersion p...

The thermal decomposition of rare earth and yttrium bromide hydrates was studied by the thermogravimetric method. Two groups of reactions were found: MBr3·6H2O → MBr3·H2O → MBr3 → MOBr → M2O3

It is found that nucleic acids can enhance the fluorescence intensity of yttrium(III) (Y3+)–rutin in presence of cetyltrimethylammonium bromide (CTMAB) system. In hexamethylenetetramine (HMTA)–HCl buffer, the maximum enhanced fluorescence is produced, with maximum excitation and emission wavel...

Yttrium (Y)-doped BiOBr with different Y doping concentrations has been synthesized via solvothermal method in the presence of reactable ionic liquid 1-hexadecyl-3-methylimidazolium bromide ([C16mim]Br). Their structures, morphologies and optical properties were characterized by X-ray diffractio...

Yttrium iron garnet (YIG) and yttrium aluminum iron garnet (YAIG) nanoferrite samples were synthesized by microemulsion method. The effect of sintering was examined by heating the samples at 900, 1000, and 1100 °C. The YIG and YAIG samples were then characterized using X-ray diffraction and fie...

Well-defined yttrium phosphate (YPO4) hollow spheres with controllable structure have been synthesized by a facile template-directed route with 3-aminophenol-formaldehyde (APF) resin as template. The structure, morphology, and formation process of the YPO4 hollow spheres have been investigated i...

In this study, pure and rare earth ions-doped yttrium hydroxide fluoride (Y(OH)2.02F0.98 denoted as YHF) were fabricated via an ion exchange route employing anion exchangeable lanthanide hydroxyanion as a sacrificial template. And the anion exchange materials Y2(OH)5Cl·1.5H2O (YHCl) are synthes...

We have employed conventional ab initio and density functional theory methods to study the electronic properties such as the mean static dipole polarizability, α¯, anisotropy of the polarizability, Δα, and dipole moment, μ, of yttrium bromide. The bond length dependence of properties is det...

From the precipitation borderline in the pM′-pCH diagram, determined experimentally under CO2-free conditions, the stability constants of the mononuclear species of ytterbium hydroxide have been established. The values found are log *β1 = −7.7, log *β2 = −15.5, log *β3 = −23.2, log *β4 = −3...

Conventional ion exchange resins with different functional groups were evaluated for their potential application in separating uranium U(VI) and thorium Th(IV) from rare earth elements RE(III). The resins studied comprised strong- and weak-base anion exchange resins, and strong- and weak-acid ca...

The near-infrared electrogenerated chemiluminescence (IR ECL) of Yb(III) chelates at a pulse-polarized oxide-covered aluminium cathode is described for the first time. The observed 2F5/2→2F7/2 radiative transition of Yb(III) is the lowest-energy ECL in aqueous solution reported to date. Also, a...

Chelating resins with different functional groups were evaluated for their potential application in separating uranium U(VI) and thorium Th(IV) from rare earth elements, RE(III). The candidate resins included a bis-picolylamine resin, aminophosphonic resins, iminodiacetic resins, and solvent-imp...

The extraction and stripping of ytterbium(III) from sulfuric acid medium using Cyanex 923 in heptane solution was investigated. The effects of extractant concentration, pH and sulfate ion as well as stripping agents, acidity and temperature on the extraction and stripping were studied. The equil...

It is well known that the leaching of chalcopyrite has very slow kinetics. The generally higher reactivity of chalcopyrite in chloride as opposed to sulfate solutions has resulted in many studies of chloride systems for the hydrometallurgical treatment of chalcopyrite. Despite much progress on t...

The combination of co-precipitation and dehydration is used to prepare hydrated and dehydrated cupric-cobaltous oxalates (Cu1/3Co2/3C2O4·xH2O, x = 1.4; Cu1/3Co2/3C2O4). Then, the hydrothermal treatment of these binary oxalates with freshly prepared graphene oxide (GO) and then dehydration are s...

This paper shows a mechanism for recovering cupric chloride salts from spent etchant solution used in printing circuits industry. The tested solution is an ammoniacal copper solution containing 135 g/L Cu ion with minor impurity. Copper is present as the square planar cupprammine complex. The se...