Natural stibnite ore (Sb2S3) embedded in sulfur-doped …

Antimony sulfide (Sb2S3) has drawn widespread attention as an ideal candidate anode material for sodium-ion batteries (SIBs) due to its high specific capacity of 946 mA h g−1 in conversion and alloy reactions. Nevertheless, volume expansion, a common flaw for conversion-alloy type materials during the sodiation and

Separation and purification Sb2S3 from stibnite by vacuum …

Separation and purification Sb2S3 from stibnite by vacuum distillation - ScienceDirect. Article preview. Abstract. Introduction. Section snippets. References (22) …

Basic research on the microwave absorbing properties and …

The results indicate that in inert atmosphere, stibnite can be volatilized most efficiently as Sb2S3 (g) at a linear rate below 850 °C, with activation energy of 137.18 kJ/mol, and the reaction ...

Natural stibnite ore (Sb2S3) embedded in sulfur-doped …

To determine the chemical composition and structure, stibnite and Sb 2 S 3 /SCS composites were characterized with X-ray diffraction (XRD). As illustrated in Fig. …

Aerosol assisted chemical vapor deposition of Sb2S3 thin …

Antimony sulfide (Sb2S3) thin films are prepared by the atmospheric pressure chemical vapor deposition method. The effect of deposition time (5, 10, 15, and 20 min) on the properties of the sample ...

High resolution XPS study of the large-band-gap semiconductor stibnite

DOI: 10.1016/J.SUSC.2005.10.034 Corpus ID: 98288787; High resolution XPS study of the large-band-gap semiconductor stibnite (Sb2S3): Structural contributions and surface reconstruction

Antimony Sulfide

The synthesis of Sb 2 S 3 QDs, which exhibited good light absorption property in solar cells and reduced recombination possibility with power conversion efficiency that reaches …

Stibnite Sb2S3

Stibnite Sb2S3 c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Orthorhombic. Point Group: 2/m 2/m 2/m. Slender to stout, complexly terminated crystals, elongated along [001], to 0.65 m; bent crystals not uncommon, rarely twisted. In radiating and confused groups of acicular crystals; also columnar, granular, or very fine masses.

Laser-induced transformation of stibnite (Sb2S3) and

The Raman spectra of ZnO/TiO 2 core-shell NW heterostructures covered with a Sb 2 S 3 shell grown by CSP using 30, 50, 70, and 90 cycles are presented in Figure 3. A very small laser power density ...

Reductive-oxidative pretreatment of a stibnite flotation …

Decomposition of stibnite was quantitatively monitored from the oxidation of H2S using acidified potassium dichromate. The residual concentration of Cr(VI) ions was determined by titrating with Fe(II) solution. ... Figure 2 shows that Sb2S3 decomposition can either be chemical, oxidative and/or reductive. In oxidising conditions, Sb2S3 forms ...

Phase transition mechanism and bandgap engineering of …

16 Citations. 2 Altmetric. Metrics. Abstract. Earth-abundant antimony trisulfide (Sb 2 S 3 ), or simply antimonite, is a promising material for capturing natural energies …

Sonochemical Fabrication and Characterization of Stibnite …

The experimental results show that the sonochemical formation of stibnite nanorods can be divided into four steps in sequence: (1) ultrasound-induced …

Natural Stibnite for Lithium-/Sodium-Ion Batteries: Carbon …

Highlights The chemical process of local oxidation–partial reduction–deep coupling for stibnite reduction of carbon dots (CDs) is revealed by in-situ high-temperature X-ray diffraction. Sb2S3@xCDs anode delivers high initial coulombic efficiency in lithium ion batteries (85.2%) and sodium ion batteries (82.9%), respectively. C–S bond influenced …

Antimony release and isotope fractionation during leaching of stibnite …

In the Earth's crust, antimony (Sb) accumulates in ore deposits with stibnite as the most common Sb mineral. During weathering of the primary ores, Sb is released in the environment and forms secondary minerals. Although Sb bioavalaibility and transport mechanisms in soils, water, and sediments were investigated ([1] and ref. therein), only …

Postsurface Selenization for High Performance Sb2S3 Planar …

Sb2S3 has attracted great research interest very recently as a promising absorber material for thin film photovoltaics because of their unique optical and electrical properties, binary compound and easy synthesis. Sb2S3 planar solar cells from evaporation method without hole-transport layer (HTM) assistance suffer from sulfur deficit vacancy and high back …

Fabricating antimony sulfide Sb2S3 microbars using …

Antimony trisulfide (Sb2S3) is a promising candidate for cell absorbers due to its appropriate band gap, abundant constituents, non-toxicity, simple composition, and long-term stability. In this study, highly oriented Sb2S3 microbars were prepared utilizing an easy, low-cost solvothermal approach. The effects of the solvents used on the …

RGO/Stibnite Nanocomposite as a Dual Anode for

RGO/Sb2S3 nanocomposite has been investigated in this study as a dual anode material for Li- and Na-ion battery applications. The stibnite phase of Sb2S3, and its rGO composite have been obtained from a molecular complex, Sb(SCOPh)3 or its rGO mixture by solid state decomposition or hydrothermal treatment. The pristine sample …

Reductive leaching of stibnite (Sb2S3) flotation concentrate using

The reductive decomposition of a stibnite (Sb 2 S 3) flotation concentrate using elemental iron was investigated in hydrochloric acid.The leaching process which proceeded via both reductive and non-oxidative chemical decomposition reactions achieved desulphurisation in excess of 95% to produce elemental and dissolved …

Polarization-Dependent Raman Characterization of Stibnite (Sb2S3)

The stibnite Sb 2 S 3 phase belongs to the Pbnm (centrosymmetric) space group. According to the factor group analysis at the Γ point, the orthorhombic stibnite structure exhibiting 20 atoms per ...

Reductive leaching of stibnite (Sb2S3) flotation …

Semantic Scholar extracted view of "Reductive leaching of stibnite (Sb2S3) flotation concentrates using metallic iron in a hydrochloric acid medium II: Kinetics" by T. Mahlangu et al. ... This paper describes experimental investigations into the reductive decomposition of arsenopyrite/pyrite (FeAsS/FeS2), a gold and silver bearing iron/arsenic ...

Thermal Reduction of Mechanically Activated Cinnabar (HgS) and Stibnite

The reduction of cinnabar (HgS) and stibnite (Sb2S3) by hydrogen was investigated. These investigations were performed in the temperature region 636–765 K for cinnabar and in the region 825–954 K for stibnite. It has appeared that the mechanical activation positively affects the thermal reduction of the sulphides. The thermal decomposition of …

Stibnite Sb2S3

Cell Data: Space Group: Pbnm. = 11.234(3) b = 11.314(2) = 3.837(2) Z = 4. X-ray Powder Pattern: Synthetic. 2.764 (100), 3.053 (95), 3.556 (70), 3.573 (65), 5.052 (55), 2.680 …

D. J. Simbi's research works | University of Zimbabwe, Harare …

The reductive decomposition of a stibnite (Sb2S3) flotation concentrate using elemental iron was investigated in hydrochloric acid. The leaching process which proceeded via both reductive and non ...

Low‐cost fabrication of Sb2S3 solar cells: Direct

In this way, the particle size is increased from ∽500 nm to ∽1.5 µm, the carrier concentration of the Sb2S3 film is increased from ∽10¹⁵ cm⁻³ to ∽10¹⁶cm⁻³, and the power ...

mp-1189633: Sb2S3 (orthorhombic, Pmn2_1, 31)

Sb2S3 is Stibnite structured and crystallizes in the orthorhombic Pmn2_1 space group. The structure is two-dimensional and consists of two Sb2S3 sheets oriented in the (0, 0, 1) direction. there are four inequivalent Sb3+ sites. In the first Sb3+ site, Sb3+ is bonded in a 6-coordinate geometry to six S2- atoms. There are a spread of Sb–S bond distances …

Preparation and characterization of Sb2S3 thin films for …

1. Introduction. Antimony chalcogenide semiconductor materials such as Sb 2 Se 3, Sb 2 S 3, Sb 2 (S x S 1-x) 3 have received much attention in the photovoltaic field due to their simple chemical composition, earth-abundant elements, appropriate bandgaps and high stability in recent years [[1], [2], [3], [4]].Among them, Sb 2 S 3 is a promising …

Laser-induced transformation of stibnite (Sb2S3) and other …

The photoinduced Raman transformation of stibnite is explained. • The resulting products from thermo-induced oxidative decomposition are senarmontite and cervantite. • The resulting products from laser-degradated sample are senarmontite and antimony metal. • The result is valid for other SbS 3-pyramid-containing sulfosalts.

Stibnite

Stibnite or antimonite is sulfide metalloid mineral of antimony with chemical formula (Sb2 S 3 ). The color is shiny lead-gray tarnishing to black with massive, granular, radiating, and elongated crystals habits ( Fig. 1.50 ). The mineral contains 71.7% antimony in its natural purest form. Stibnite crystallizes in orthorhombic system, needle ...

Reductive leaching of stibnite (Sb2S3) flotation concentrates using

The reductive decomposition of a stibnite (Sb2S3) flotation concentrate using elemental iron was investigated in hydrochloric acid. The leaching process which proceeded via both reductive and non ...

Regents Chemistry Exam Explanations August 2015

Antimony and sulfur are both found in the mineral stibnite, Sb2S3. To obtain antimony, stibnite is roasted (heated in air), producing oxides of antimony and sulfur. The unbalanced equation below represents one of the reactions that occurs during the roasting. Sb 2 S 3 (s) + O 2 (g) → Sb 2 O 3 (s) + SO 2 (g) 66 Determine the percent ...

4.9% Efficient Sb2S3 Solar Cells from Semitransparent …

Fluorene-based hole transport materials (HTMs) with terminating thiophene units are explored, for the first time, for antimony sulfide (Sb2S3) solar cells. These HTMs possess largely simplified synthesis processes and high yields compared to the conventional expensive hole conductors making them reasonably economical. The thiophene unit …