The theoretical specific capacities of a family of layered compounds MPX3 (M = Fe, Co, Ni; X = S, Se) for current-producing reactions involving 1.5, 2, 6 and 9 lithium atoms per MPX3 molecule have been estimated. These data show that FePS3 and NiPS3 are good electroactive materials for primary l...

In the present work the electrochemical behaviour of the layered NiPS3 compound with reference to lithium has been studied at 200°C in a cell which included an Li3Sn counter electrode and a molten LiSCNKSCN eutectic mixture as the electrolyte. It has been found that electroreduction of nickel...

Methyl propyl trisulfide is a flavoring substance found in foods such as garlic and onions. At the request of the European Food Safety Authority (EFSA) for additional toxicological data on methyl propyl trisulfide, groups of Sprague-Dawley rats (10/sex/group) were gavaged with 0 (corn oil vehicl...

The study of titanium trisulfide (TiS3) has been an intensely researched subject due to the wide range of industrial applications (e.g., photo-voltaic and thermoelectric devices). The effects of pressure in reducing inter-atomic distances and modifying crystal structures are well known, thus pre...

Herein, we report on the synthesis and Li-ion storage properties of the 0D–2D nanohybrid consisted of bimetal phosphorus trisulfides nanoneedles (Co0.5Ni0.5PS3) and graphene nanosheets (denoted as Co0.5Ni0.5PS3@G). By choosing the Co0.5Ni0.5(OH)2 nanoneedles as precursor, the Co0.5Ni0.5PS3 deri...

The development and utilization of photocatalysts to realize water-splitting without any external bias or sacrificial agents has received the limelight. As a novel two-dimensional layered material, metal phosphorus trichalcogenides (MPTs) cause wide research interest, presently. However, the gro...

Hydrazine is an important intermediate for anaerobic ammonium oxidation (anammox), in which ammonium and nitrite are converted to nitrogen gas. Hydrazine addition is known to improve the nitrogen removal capacity in anammox-based processes. However, the underlying mechanism remains unknown. This...

The peculiar behavior of the symmetric stretch of the N3-anion and the bending mode of the NH4-cation in the high-pressure phase II (above 3 GPa) of the molecular ionic crystal NH4N3 has been studied by pressure-dependent Raman spectroscopy up to a pressure of 20 GPa. The spectra in the pressure...

This work is devoted to reduce spontaneous sublimation of ammonium azide at ambient and elevated temperatures by means of two microencapsulation techniques involving solvent/non-solvent and solvent evaporation methods in which stearic acid, Viton and nitrocellulose (NC) have been tested as coati...

Pressure-dependent Raman spectroscopy studies reveal polymorph phase transition in simple molecular ionic crystal NH4N3 at pressure ≈3 GPa unobserved by recent ab initio evolutionary structure searches. Hydrogen bonding is spectroscopically evident in both low- and high-pressure phases. The str...

We present a Nb K-edge EXAFS study of carbon- and alumina-supported niobium sulfide hydrotreatment catalysts. NbS2 and NbS3 entities have been evidenced on the carbon support, and NbS2 and Nb1−yS ones on the alumina support. EXAFS spectra of carbon-supported species, which are highly disordered,...

We have developed a new process for the synthesis of a layered niobium sulfide that involves heating K4Nb6O17·3H2O with a H2S/N2 gas mixture. It was confirmed that heating the starting layered oxide at 750 °C for 10 h under the gas flow yielded a highly crystalline, single-phase K0.34(H2O)0.7N...

New unsupported and carbon-supported niobium sulfide (pure or Ni doped) catalysts, characterized by EXAFS, demonstrate interesting properties for hydrodesulfurization.

A new barium niobium sulfide has been prepared by controlling the partial pressure of sulfur. The single phase of the sulfide could be synthesized at 1000°C when the chemical composition was maintained at x = 5.67 in BaNbxSy and the sulfur partial pressure at 23.7 kPa. This sulfide has a homoge...

Unknown barium niobium sulfides have been prepared by controlling the partial pressure of sulfur. The chemical compositions of the sulfides are BaNb2.85S6.23 and BaNb5.33S11.0. The X-ray powder diffraction patterns of the sulfides were indexable in a hexagonal setting with the reflection conditi...

Niobium sulfide has been recently found to be an interesting new active phase for hydrodesulfurization. In this work, niobium was used as a dopant for a conventional hydrotreating catalyst. A NiMo hydrotreating catalyst in the oxide form was doped with various contents of Nb precursor salt (0

Niobium sulphidation kinetics, as well as chemical diffusion and nonstoichiometry in niobium sulphide, Nb1+xS2, have been studied as a function of temperature (973–1273 K) and sulphur vapour pressure (10−4–5 Pa) using microthermogravimetric techniques. It has been shown that the excellent resi...

Hydrotreating properties of unsupported and supported niobium sulfides are compared to those of molybdenum sulfide catalysts. Niobium catalysts demonstrate higher activities than molybdenum sulfide ones and remarkable selectivity in cracking and isomerisation reactions.

Carbon cloth supported lamellar nickel-cobalt-molybdenum ternary phosphide (donated as NCMP) nanoarrays are prepared by a simple method including a hydrothermal and subsequent phosphorization process. The NCMP nanosheets are grown vertically on carbon cloth fibers (CC) to form a three-dimensiona...

Investigation of non-precious, highly-active and durable catalysts is an essential criteria for the development of electrocatalytic hydrogen evolution reaction (HER). In this work, reduced graphene oxide coupled with molybdenum phosphide (MoP-RGO) is prepared through a facile and scalable one-st...