Synthesis of iron sulfide thin films and powders from new xanthate precursors

Almanqur, Laila; Alam, Firoz; Whitehead, George F. S.; Vitórica-Yrezábal, Iñigo J.; O’Brien, Paul; Lewis, David J.

doi:10.1016/j.jcrysgro.2019.05.029

Cited by 6 publications

(6 citation statements)

References 53 publications

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“…4). The crystallite domain size found in AgSbS 2 powders increases with increasing synthesis temperature, which is in agreement with previously reported data [65][66][67] .…”

Section: Thermogravimetric Analysis Of [Ags 2 Coet] (1) and [Sb(s 2 Csupporting

confidence: 92%

Direct synthesis of nanostructured silver antimony sulfide powders from metal xanthate precursors

Alharbi

Alam

Salhi

et al. 2021

Sci Rep

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Silver(I) ethylxanthate [AgS2COEt] (1) and antimony(III) ethylxanthate [Sb(S2COEt)3] (2) have been synthesised, characterised and used as precursors for the preparation of AgSbS2 powders and thin films using a solvent-free melt method and spin coating technique, respectively. The as-synthesized AgSbS2 powders were characterized by powder X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) spectroscopy. The crystalline AgSbS2 powder was investigated using XRD, which shows that AgSbS2 has cuboargyrite as the dominant phase, which was also confirmed by Raman spectroscopy. SEM was also used to study the morphology of the resulting material which is potentially nanostructured. EDX spectra gives a clear indication of the presence of silver (Ag), antimony (Sb) and sulfur (S) in material, suggesting that decomposition is clean and produces high quality AgSbS2 crystalline powder, which is consistent with the XRD and Raman data. Electronic properties of AgSbS2 thin films deposited by spin coating show a p-type conductivity with measured carrier mobility of 81 cm2 V−1 s−1 and carrier concentration of 1.9 × 1015 cm−3. The findings of this study reveal a new bottom-up route to these compounds, which have potential application as absorber layers in solar cells.

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“…4). The crystallite domain size found in AgSbS 2 powders increases with increasing synthesis temperature, which is in agreement with previously reported data [65][66][67] .…”

Section: Thermogravimetric Analysis Of [Ags 2 Coet] (1) and [Sb(s 2 Csupporting

confidence: 92%

Direct synthesis of nanostructured silver antimony sulfide powders from metal xanthate precursors

Alharbi

Alam

Salhi

et al. 2021

Sci Rep

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“…44 A second limitation is the necessary inclusion of oxygen, which can potentially lead to its disadvantageous inclusion into the metal sulfides. That said, there are a number of xanthate complexes, especially [Fe(S 2 COR) 3 ], have been shown to be good SSPs, 45,46 and in general xanthates complexes tend to have lower decomposition temperatures than analogous DTC species. 47…”

Section: Dithiocarbamates and Their Complexesmentioning

confidence: 99%

Dithiocarbamate Complexes as Single Source Precursors to Nanoscale Binary, Ternary and Quaternary Metal Sulfides

Sarker

Hogarth

2021

Chem. Rev.

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Nanodimensional metal sulfides are a developing class of low-cost materials with potential applications in areas as wide-ranging as energy storage, electrocatalysis, and imaging. An attractive synthetic strategy, which allows careful control over stoichiometry, is the single source precursor (SSP) approach in which well-defined molecular species containing preformed metal–sulfur bonds are heated to decomposition, either in the vapor or solution phase, resulting in facile loss of organics and formation of nanodimensional metal sulfides. By careful control of the precursor, the decomposition environment and addition of surfactants, this approach affords a range of nanocrystalline materials from a library of precursors. Dithiocarbamates (DTCs) are monoanionic chelating ligands that have been known for over a century and find applications in agriculture, medicine, and materials science. They are easily prepared from nontoxic secondary and primary amines and form stable complexes with all elements. Since pioneering work in the late 1980s, the use of DTC complexes as SSPs to a wide range of binary, ternary, and multinary sulfides has been extensively documented. This review maps these developments, from the formation of thin films, often comprised of embedded nanocrystals, to quantum dots coated with organic ligands or shelled by other metal sulfides that show high photoluminescence quantum yields, and a range of other nanomaterials in which both the phase and morphology of the nanocrystals can be engineered, allowing fine-tuning of technologically important physical properties, thus opening up a myriad of potential applications.

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“…This difference can be attributed to the fact that pyrite ore differs depending on the local characteristics. [24]. The peak with the highest density observed at 33.09° can be attributed to the crystal face (200) [25].…”

Section: Characterization Of the Catalystmentioning

confidence: 95%

“…From the XRD pattern, characteristic diffraction peaks of FeS2 are observed at 33.09°, 37.14°, 40.84°, 47.49°, 56.34°, 61.75°, and 64.35° (JCPDS: 42-1340). Observed peaks at 28.58° and 58.84° correspond to cubic FeS2 (111) and (222) plane reflections (JCPDS: 42-1340), respectively[24]. The peak with the highest density observed at 33.09° can be attributed to the crystal face (200)[25].…”

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confidence: 97%

COD Removal from Mixed Dye Wastewater Using Natural Pyrite Ore by Heterogeneous Fenton Process

Öztürk¹

2021

Proceedings of the 7th World Congress on New Technologies

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In this study, it was aimed to remove COD from wastewater prepared from a mixture of rhodamine 6G, methyl orange, and crystal violet dyes using natural pyrite ore as a heterogeneous fenton catalyst. The parameters of pH (2-9), H2O2 concentration (0.5-5 g/L), and catalyst dosage (0.5-5 g/L), which are thought to have major effects on the heterogeneous fenton process in COD removal, were investigated in a batch system. Characterization studies of natural pyrite ore were performed by X-Ray Diffractometer (XRD), Scanning Electron Microscope (SEM), Energy Dispersive X-Ray Spectroscopy (EDX), and Fourier Transform Infrared Spectroscopy (FTIR) spectroscopy analyses. According to the data obtained, optimum values were determined as pH of 2, H2O2 concentration of 2 g/L, and 1.5 g/L of catalyst dosage. The COD removal efficiency was calculated as 94.7% under optimum conditions. According to the characterization results, it was determined that the pyrite ore contains (wt. %) Fe (44.87%) and S (51.02%) in a major proportion. The pyrite ore had a well crystalline and irregular structure. The fingerprint bands such as Fe-O, Fe-S are determined by FTIR spectrum. Pyrite was found as an effective catalyst for COD removal in this study and can be used as a promising catalyst in future heterogeneous fenton studies by expanding its catalyst property.

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Synthesis of iron sulfide thin films and powders from new xanthate precursors

Cited by 6 publications

References 53 publications

Direct synthesis of nanostructured silver antimony sulfide powders from metal xanthate precursors

Direct synthesis of nanostructured silver antimony sulfide powders from metal xanthate precursors

Dithiocarbamate Complexes as Single Source Precursors to Nanoscale Binary, Ternary and Quaternary Metal Sulfides

COD Removal from Mixed Dye Wastewater Using Natural Pyrite Ore by Heterogeneous Fenton Process

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