Accelerated stability testing was performed on aspirin–magaldrate double layer tablets as well as aspirin–maalox marketed double layer tablets (Ascriptin®) in order to evaluate the effect of the presence of the alkaline moieties of the antacid (magaldrate and maalox) on the chemical stability ...

Some time ago empirical observation of a heretofore unpublished set of electronic spectra of substituted tropylium ions led to tentative classification of them into three types based on degree of electronic interaction between substituent and ring: Type I, perturbation of symmetry from D7h to C2...

Experiments were performed to study the effect of point defects on the optical and morphological characteristics of zinc selenide-zinc sulfide ZnSe-ZnS (ZnSexS(1-x)) solid solution crystals grown under terrestrial (1-g) condition. We used the composition ZnSe0.91S0.09 and ZnSe0.73S0.27 for the d...

In this paper we consider electron-hole recombination in wide gap semiconductor ZnSe (Zinc Selenide) under electric fields. The calculated low energy side of the luminescence spectrum displays the so-called Urbach's tail, which is characterized as resulting from the presence of side bands i...

Nanohybrids of zinc selenide and smectites (a natural montmorillonite and a synthetic saponite) were prepared by a hydrothermal reaction of zinc chloride and sodium selenosulfite in the presence of smectites. The products were characterized by powder X-ray diffraction, scanning and transmission ...

Large cubic (CUB) polymorphs of SnS and SnSe were identified in nanocrystals and in thin films during 2015–16. We present how thin films of SnS-CUB and SnSe-CUB can be stacked in different sequences to thickness of 450 nm by chemical deposition. Grazing incidence X-ray diffraction pattern of th...

The design and development of topological insulators (TIs) as well as novel Dirac materials including Weyl semimetals has expanded a new field of condensed matter physics due to their potential applications in spin-electronics, quantum computing, and thermoelectrical device. Various new material...

We study the inter-layer coupling in bulk tin selenide (SnSe) through density functional theory based calculations. Different approximations for the exchange-correlation functionals and the van der Waals interaction are employed. By performing comparison with graphite, MoS2 and black phosphorus,...

As an important binary IV-VI semiconductor compound, tin selenide (SnSe) has been investigated intensively for a wide range of applications in energy storage and photovoltaic devices, due to its unique electronic and optoelectronic properties. In this work, we successfully synthesized SnSe powde...

The anti-fouling copper-zinc-tin-selenide (CZTSe) nanocarambolas were synthesized and deposited on a hydrophilic filter membrane, as the full solar spectrum absorber and nanoporous vapor generator, for efficient and stable solar-driven interfacial water evaporation. The CZTSe nanocarambolas asse...

Although two-dimensional (2D) tin selenides are attracting intense attentions, studies on its phase transition are still relatively few. Here we report a facile way to control the phase growth of tin selenide flakes on mica and SiO2/Si by only adjusting nominal Sn:Se ratio, which refers to the a...

Stibnite (Sb2S3) is a major mineral of antimony, which occurs as large crystals often with minor encrustations of other minerals. Locally sourced powdered stibnite containing some quartzite (SiO2) and ferrosilite (FeSiO3) has been used in this work as evaporation source for vacuum deposition of ...

A simple method for the synthesis of monoselenides and diselenides having 1,2,3-triazole ring is described herein. The three component reaction of ethynylstibanes, organic azides, and selenium powder is catalyzed by CuI (10 mol%) using 1,10-phenanthroline as the ligand (10 mol%) under aerobic co...

Antimony sulfide (Sb2S3) with an optical bandgap (Eg) of 1.88 eV and antimony selenide (Sb2Se3) with Eg 1.1 eV, both of orthorhombic crystalline structure, offer a unique opportunity to prepare solar cell absorbers of Eg, 1.3–1.6 eV poised toward economically viable, non-toxic and ‘earth-abund...

We discuss the performance under the sun, at intensity 1000 W/m2, of prototype photovoltaic modules of antimony sulfide selenide thin films, Sb2S1.06Se1.94, with optical bandgap, 1.35 eV. At 26 °C, a module of seven series-connected cells of total active area 6.97 cm2 has conversion efficiency ...

The Tl2Se–Sb2Se3 cross section of the Tl–Sb–Se ternary system was studied by both the common thermal analysis (TA) and the X-ray diffraction (XRD). Numerical values of the phase transition temperatures at different alloy compositions within the whole concentration range were obtained. They ha...

This article presents the synthesis of Schiff base oxo-vanadium complex immobilized on chitosan coated-magnetic Fe3O4 nanoparticles [VO(CS)@Fe3O4] as a new magnetic interphase nanocatalyst. This type of functionalizing the surface of magnetic particles is a graceful method for bridging the gap b...

In this study, a schiff-base oxo-vanadium complex supported on magnetic Fe3O4 nanoparticles [VO(BINE)@Fe3O4] is prepared as a novel magnetically interphase nanocatalyst and its structural features are evaluated using different methods of TEM, SEM, EDX, ICP, VSM, TGA and FT-IR. Catalytic investig...

Two symmetrical double-sided Schiff base ligands, H4L1 and H4L2, were synthesized by condensation of salicylaldehyde and 2-hydroxy-1-naphthaldehyde with oxalodihydrazine, respectively. The crystal structures of their vanadium complexes were analyzed by single crystal X-ray diffraction. The inter...

The V deposit obtained in petroleum feedstocks hydrodemetallation can leads to significant change for the hydrotreating catalyst activity. Actually, although vanadium sulfide solids have shown only moderate activities, these are significant and higher than predicted by the more accepted theoreti...