Titanium-iron (TiFe) is known to be a low-cost alloy that can be reactivated to nearly full hydrogen storage capacity after oxidation. However, this reactivation requires multiple heat treatments at high temperatures under vacuum even upon partial substitution of Fe with a small amount of mangan...

In this paper a general method to obtain a mixture of a transition metal embedded in a matrix of lithium fluoride is proposed. The method consists in the reduction of the oxide of the transition metal with lithium hydride to form the correspondent transition metal and lithium oxide. This latter ...

Graphenothermal Reduction process is used to obtain exfoliated graphene oxide (EG)/iron (II) oxide (FeO) composite prepared at 650 °C for 5 h in argon. Structural and compositional analyses of the sample confirm the formation of EG/FeO composite. This composite shows a reversible capacity of 85...

This paper describes a new method for controlling nanocrystal size and crystal phase in solvothermal syntheses of iron oxide nanocrystals by altering the carbon chain length of aliphatic iron(III) carboxylate precursors and reaction solvent composition, respectively. Hematite (α-Fe2O3) nanocrys...

The development of sodium ion batteries as alternative technology to the lithium ion depends on the design of electrode based on cheap and high abundant elements. Iron oxides are potentially good candidates as negative electrode thanks to their high specific capacity, but they suffer from poor e...

A series of novel alkylxanthato iron(III) precursors [Fe(S2COR)3] (R = n-butyl, (1); 2-butyl, (2); 2-methoxyethyl, (3); and 2-ethoxyethyl (4)) have been synthesised and their single crystal X-ray structures have been studied. The complexes were used as single-source precursors for the deposition...

Hydrogen sulfide emission from sediments in storm drainage networks, estuaries and marine seafloor is a nuisance. The regeneration of the GFH for reuse is crucial to make dosing granular ferric hydroxide (GFH) an effective, long-lasting solution than doing liquid oxidants to the control of sedim...

The fabrication of low-cost, highly efficient, and earth-abundant electrocatalysts for oxygen reduction reaction is critical to produce clean and sustainable fuel through an electrochemical process. Herein, a facile hydrothermal technique is used for the synthesis of iron sulfide/graphene hybrid...

Iron electrodes were prepared by hot-pressing iron-polyethylene based formulations on nickel foam stripes. NiFe cells were tested by using commercial nickel electrodes and our iron electrodes. Post-hoc comparisons were used to identify meaningful differences between iron electrode formulations (...

Due to the natural abundance and low cost of potassium resource, potassium-ion batteries (KIBs) are promising alternatives in comparison to lithium-ion batteries (LIBs). Herein, we report a three-dimensional (3D) iron sulfide/carbon hybrid cluster as a novel anode material for high-performance K...

A number of hydrazinium(2+) and hydrazinium(1+) fluorotantalates(V) has been isolated from the solutions of tantalum pentafluoride in anhydrous hydrogen fluoride or solutions of tantalum in hydrofluoric acid of various concentrations using different mole ratios of the reactants. N2H6(TaF6)2 and ...

The thermal behaviour of hydrazinium(2 + ) heptafluorotantalate monohydrate, first isolated in 1971 [1], has not previously been reported, and therefore it was chosen as the subject of a study using TG, DTG and DTA measurements.N2H6TaF7·H2O decomposed in four steps through the intermediates, N2...

An eco-friendly H2ZrF6-based conversion coating reinforced by nanoceramic metal oxide particles was used as a protective layer for cold-rolled steel (CRS) substrates. Initially, the pH and temperature of the solution were optimized and then the effects of immersion time as the most effective pro...

The effect of four practical parameters (deposition temperature, time, bath pH and concentration of Zr) on electrochemical and morphological properties of zirconium based conversion coating (ZrCC) on cold rolled steel (CRS) substrates was investigated. DC polarization and electrochemical impedan...

A new phosphate-free pretreatment from Henkel Corp. named TecTalis®, was investigated. The treatment bath is composed of dilute hexafluorozirconic acid with small quantities of non-hazardous components containing Si and Cu. The corrosion resistance of treated steel was compared to samples treate...

Most of the nanozirconia coating formulations are based on hexafluorozirconic acid solutions that may contain hexafluorosilicic acid indispensably. A new process has been developed to synthesize hexafluorozirconic acid in the powder form which is free from silica as indicated by the absence of S...

SynopsisParamagnetic relaxation experiments have been made on powders and single crystals of some cobalt salts by means of a Hartshorn bridge. A new method of measuring long relaxation times is described. A deviation parameter is introduced to describe the difference between the experimental dis...

Ammonium hexafluorosilicate [SiF: (NH4)2SiF6] was prepared in order to overcome the tooth discoloration caused by diamine silver fluoride [AgF: (NH3)2AgF] application. We employed a single concentration of SiF solution in our previous study; therefore, it is still unclear how the concentration o...

Diamine silver fluoride [AgF: (NH3)2AgF] has been used clinically in Japan, as it reduces dental caries and dentin hypersensitivity. However, AgF stains the teeth black due to silver precipitation. To overcome this drawback, the authors prepared ammonium hexafluorosilicate [SiF: (NH4)2SiF6], whi...

Ammonium hexafluorosilicate (SiF), which is claimed to significantly improve occlusion of dentinal tubules, was proposed as a novel desensitizer for dentine hypersensitivity (DH). However, the cytotoxicity of SiF on oral cells is lacking. The purpose of this study was to investigate the cytotoxi...