The present study describes the design and synthesis of novel nano N-bromo porphyrazin (N-bromo tetra-2,3-pyridiniumporphyrazinato oxo-vanadium tribromomethanide [VO(TPPABr)] CBr3) as an efficient, recyclable and thermal stable heterogeneous catalyst for chemo and homoselective oxidation of sulf...

Novel vanadium sulfides interwoven nanoflowers supported on nickel foam (VO-S/NF) has been synthesized through a facile two-step access. Firstly, octahedron-structured vanadium oxides as precursor were anchored on the surface of NF (VO/NF) by a hydrothermal process. Secondly, in-situ sulfurizati...

This work describes the mechanochemical transformations of molybdenum and vanadium sulfides into corresponding molybdate and vanadate, to serve as a new environment-friendly approach for processing hazardous spent hydrodesulphurization (HDS) catalysts solid waste to achieve an easy recovery of n...

In this work, tin disulfide (SnS2) embedded in nitrogen and sulfur dual-doped carbon (denoted as SnS2/NSDC) nanofibers are synthesized using a facile electrospinning technique for the first time. The exterior of the nanofibers is decorated through the SnS2 nanosheet, and the interior of carbon n...

Flexible humidity sensors with ultrafast response are great importance in the promising wearable devices. In this paper, a novel nanocomposite of tin disulfide/graphene oxide nanoflower (SnS2/GO) was first synthesized for constructing humidity sensors. The nanostructural, morphological and compo...

The shuttle effect of lithium polysulfides (LiPSs) seriously affects the cycle and rate capability performances of lithium sulfur batteries (LSBs) and restricts their commercial application. In order to suppress availably the shuttle effect of LiPSs, herein a holistic design strategy for using t...

Cubic and hexagonal zinc sulphide nanoparticles were prepared by hydro/solvothermal decomposition of Zinc N,N-diethyldithiocarbamate by using different experimental conditions such as pH values, solvents and the presence of a particle stabilizer, sodium polyacrylate. The effect of these differen...

In this work, hierarchical zinc cobalt sulfide flowers on nickel foam (f-Zn0.76Co0.24S/Ni foam) are fabricated by a facile two-step hydrothermal method. The obtained f-Zn0.76Co0.24S/Ni foam are directly used as the binder-free electrodes for high-performance supercapacitors. The as-prepared f-Zn...

Pure Zinc Sulfide (ZnS) and Chromium doped Zinc Sulfide (Cr-ZnS) nanoparticles have been prepared by chemical precipitation method. The XRD patterns of Pure ZnS and Cr doped ZnS nanoparticles exhibit zinc blende and Hexagonal wurtzite phases with the average grain size of about 10 nm. The elemen...

Three samples of (Tl,Sb,As)-rich pyrite from the ore deposits of the southern Apuan Alps (Tuscany, Italy) were studied through a multi-technique approach in order to constrain the speciation and incorporation mechanism of thallium in pyrite. High concentrations of Tl, Sb, and As were detected in...

Defect-assisted luminescence of Pr3+-doped SrS has been investigated and reported in this paper. The polycrystalline sample of phosphor was prepared by conventional solid-state reaction method and checked for crystallization and phase by X-ray diffraction study. The thermally stimulated luminesc...

The results from the optical and electron spin resonance studies of coloured calcium sulphide and strontium sulphide single crystals are presented. These results reveal that two main defect centres are present in these materials, one involving two electrons and, the other one electron. We relate...

Epitaxial luminescent thin films of doped strontium sulfide (SrS) have been grown using pulsed laser deposition (PLD). SrS films double doped with Eu and Sm, Ce and Sm and Cu and Ge were deposited with thicknesses ranging from 0.05 to 2 μm on MgO(001) substrates. Optical microscopy, scanning el...

Epithermal mineralization was recently described in synrift volcanic rocks from the SE Afar Rift in Djibouti. To infer fluid sources in this system, coupled sulfur and strontium isotopic analyses were performed on mineralized samples from hydrothermal veins and stockwork zones. Mineralization in...

New strontium ternary sulfides, SrM2S5 (M=Nb, Ta), have been prepared by the reaction of CS2 with a mixture of SrCO3 and Nb2O5, or SrCO3 and Ta2O5. The powder X-ray diffraction patterns were indexable on the basis of hexagonal cells with lattice parameters of a=3.3592(7)Å, c=23.995(6)Å for SrN...

A novel metal sulfide (KZTS) adsorbent has been synthesized using a simple one-step hydrothermal method for radioactive Sr2+ removal from aqueous solutions. XRD and TG analyses indicated that KZTS was chemically and thermally stable. SEM-EDS and TEM images showed that KZTS possessed both flake-l...

89Sr and 90Sr are both fission products of high radiotoxicity, which can be released in significant amounts in the event of a nuclear accident. Radiostrontium isotopes will follow calcium all along the food chain and, after ingestion, accumulate in the bones. Therefore, it is imperative to be ab...

Metal sulfides are promising materials because their ability to capture radioactive nuclides from wastewater is superior to many others. Herein, Na/Zn/Sn/S (NaZTS) quaternary metal sulfide nanosheets were fabricated using a one-pot hydrothermal method. A series of characterizations revealed that...

Annealing is an important process for fabricating counter-electrodes of dye-sensitized solar cells. Along with the annealing process, however, structural phase transitions sometimes occur, which have significantly effect on the performance of the electrodes and cells, but is often ignored. Here,...

Tin (II) sulfide (SnS), one of the most abundant materials, is being considered as an absorber material for the development of low-cost and nontoxic solar cell devices. In this direction, we have developed nanocrystalline films of SnS with uniform morphology on different substrates by adopting t...