Abstract The uses of phosphate based luminescent materials are presented in this study different fields luminescence. There types phosphors available the field luminescence such as borates, sulphates, fluorides, sulphides, phosphates etc. From all these phosphors, phosphate-based shows their potential almost every last few years and it becomes a key material especially photoluminescence, thermo...

In 2007, the US Department of Energy recommended a no-go on NaBH4 hydrolysis for onboard applications; however, concept NaBH4-H2-PEMFC system has potential to become primary source on-demand power supply. Despite many efforts study this technology, most published papers focus catalytic performance. Nevertheless, development practical reaction close NaBH4-H2 cycle remains critical issue. Therefo...

Glassy yttrium and aluminum borate powders (g-YAB) were synthesized by the polymeric precursor method (modified Pechini). We report here a detailed study of structural, spectroscopic, optical characterizations g-YAB powders, involving several complementary techniques: thermal analysis, X-ray powder diffraction, electron microscopy combined with IR, nuclear magnetic resonance, paramagnetic reson...

Lowering the operating temperature of solid oxide fuel cells (SOFCs) has extensively stimulated development new ion conductors. Here, inspired by structural commonalities conductors, inability to accommodate oxygen vacancies in rigid, isolated, 3-fold tetrahedral rings SrSi/GeO3-based materials, and considerable flexibility BOn polyhedra terms coordination number, rotation, deformation, linkage...

Borates M[C6F5BF3] (M = K, Li, Bu4N) react with organolithium compounds, RLi (R = Me, Bu, Ph), in 1,2-dimethoxyethane or diglyme to give M[4-RC6F4BF3] and M[2-RC6F4BF3]. When R is Me or Bu, the nucleophilic substitution of the fluorine atom at the para position to boron is the predominant route. When R = Ph, the ratio M[4-RC6F4BF3]/M[2-RC6F4BF3] is ca. 1:1. Substitution of the fluorine atom at ...

The first alkali metal and magnesium mixed borate fluoride, Li(0.8)Mg(2.1)B2O5F, was prepared by the high-temperature solution method. It crystallizes in the monoclinic space group P2(1)/n (no. 14) with lattice constants a = 3.0881(4) Å, b = 13.6020(2) Å, c = 9.6563(1) Å, β = 91.744(9)°, Z = 4. In the structure, a special magnesium-oxygen-fluorine octahedral chain is found in borates for the fi...

The change in rheological and mechanical properties for some ionotropic cross-linked metal-alginate hydrogel complexes in particularly copper-alginate membranes in the presence of some organic solvents (benzene, toluene, xylene, carbon tetrachloride, acetone, chloroform, dichloroethane, isobutyl alcohol and ethyl alcohol) or buffer solutions (acetates, borates and universal buffers) have been i...