The use of TVEX–PHOR resin for the sorption of praseodymium (III), holmium (III) and cobalt (II) from nitrate medium was carried out using batch and column techniques. Various parameters affecting the uptake of these metal ions such as v/m ratio, pH and the metal ion concentration were separate...

A series of honeycombed holmium-modified Fe-Mn/TiO2 catalysts were prepared by moulding method and their performance in the low temperature selective catalytic reduction (SCR) of NOx was investigated. The forming process was optimized as: the mass content of water in the forming additives is 40%...

The CoHoxFe2-xO4 (x = 0.00, 0.05, 0.1, 0.15, 0.2) samples were synthesized by chemical co-precipitation technique. The structural properties were studied using X-ray diffraction (XRD). XRD data reveal formation of single cubic spinel phase for the samples having lower concentration of holmium su...

Time series of ac conductivity at 2 kHz along a direction perpendicular to c-axis of holmium nitrate crystal were measured at temperatures T, 12 K ⩽ T ⩽ 300 K. Nonperiodic instability (burst) was observed. Temperature variation of the conductivity was found in the region 120 K ⩽ T ⩽ 180 K. Power...

Holmium hydroxide nanowires were prepared by a hydrothermal method, while silver was deposited on the surface of holmium hydroxide nanowires by a photoassisted deposition method. Holmium hydroxide nanowires and silver deposited holmium hydroxide nanowires were characterized by different techniqu...

Pure holmium oxide ceramic nanostructures were prepared via a new simple approach. Nanostructures were synthesized by heat treatment in air at 600 °C for 5 h, utilizing [Ho L(NO3)2]NO3 (L=bis-(2-hydroxy-1-naphthaldehyde)-butanediamine Schiff base ligand), as precursor, which was prepared via a ...

Holmium nitrate pentahydrate was reacted with tri-n-butyl phosphate in supercritical carbon dioxide at 308 K. The products of the complexation reaction were measured under supercritical fluid conditions using UV–vis spectroscopy. The solubility of the metal complexes in the supercritical fluid ...

The pyrochlore oxides are of potential interest as ion conducting electrolyte for intermediate temperature solid oxide fuel cell (SOFC). Nanopowders of holmium zirconate have been synthesised through ion-exchange between sodium alginate gel and metal complex solution followed by its thermal deco...

Some oxygen defective metal oxides, such as cerium and bismuth oxides, have recently shown exceptional electrostrictive properties that are even superior to the best performing lead-based electrostrictors, e.g. lead-magnesium-niobates (PMN). Compared to piezoelectric ceramics, electromechanical ...

Phosphorus in wastewater has caused the occurrence of eutrophication. In this study, we synthesized gadolinium -1,4-benzenedicarboxylate (GdBDC), a new gadolinium composite that has not been reported, for the removal of phosphorus. The GdBDC was prepared by gadolinium with the terephthalic acid ...

The possibility of identifying gunshot residue (GSR) particles produced by non-toxic primers containing only titanium and zinc is a very difficult task using SEM/EDX analysis employed in the analysis of GSR originating from primers containing lead, barium and antimony. However, Bauer et al. demo...

This paper presents the results of a sensitivity and uncertainty (S&U) analysis on keff performed on a BWR fuel assembly (FA) poisoned with gadolinia, as well as of a criticality and sensitivity study of the ZED-2 research reactor, in whose moderator has been dissolved. The evidence collected fr...

The extraction of samarium and gadolinium from aqueous nitrate solution with D2EHPA using a pulsed disc and doughnut column was investigated. It was found from batch experiments for separation of Sm(III) from Gd(III) that the initial aqueous pH, concentration of D2EHPA and concentration of nitri...

The extraction equilibrium of Gd(III) from nitrate medium by 8-hydroxyquinoline (HOX) in toluene was studied. Liquid–liquid investigations were first carried out. Based on the equilibrium results, the extraction of Gd(III) from aqueous nitrate medium into an emulsion liquid membrane system (ELM...

The extraction of gadolinium (III) from aqueous nitrate solution with bis (2,4,4-trimethylpentyl) dithiophosphinic acid (Cyanex301), di-(2-ethylhexyl) phosphoric acid (D2EHPA) and the mixtures of extractants was investigated. Various parameters affecting the extraction process including the pH o...

Gadolinium as gadolinium nitrate is used as neutron poison in the moderator system for regulating and controlling the power generation of Pressurized Heavy Water Reactors (PHWR) and proposed to be used in Advanced Heavy Water Reactors (AHWR) owing to its high neutron absorption cross section. Re...

Effect of high concentrations of soluble neutron poison gadolinium nitrate, Gd(NO3)3, in the moderator system of a proposed advanced Indian nuclear reactor, was evaluated from the safety point of view. The radiolytic yields of H2 and H2O2 was expected to be high as moderator water system pH woul...

In this present work, we have successfully grown γ-glycine single crystals in the presence of gadolinium nitrate as an additive by using slow solvent evaporation method. Powder X-ray Diffraction study confirms γ-polymorph structure and it crystallizes into a hexagonal crystal system with a spa...

The adsorption and desorption behaviors of Er(III) ion on D113-III resin were investigated. Batch adsorption studies were carried out with various Er(III) ion concentrations, pH, contact time and temperature, indicating that D113-III resin could adsorb Er(III) ion effectively from aqueous soluti...

We report the synthesis and X-ray structural characterization of the new Er3+ ternary complex [Er(hd)3(bipy)] (where Hhd is 3,5-heptanedione and bipy is 2,2′-bipyridine) as well as its absorption/luminescent properties. X-ray analysis of the novel complex reveals its triclinic centrosymmetric s...