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Monolayer tungsten disulfide is a direct-gap semiconductor with high photoluminescence yield that can achieve a reasonably high on/off current ratio (>10 5) in field-effect transistor geometries. Reliable …
Tungsten(IV) sulfide is an inorganic chemical compound that occurs naturally as the rare mineral tungstenite. It is most commonly used as hydrogen and lithium storage material, as material for lithium battery cathodes, as a component of batteries and other electrochemical devices, as a dry lubricant, and as a catalyst in …
Herein, a heterointerface strategy is proposed for constructing 1T-phase tungsten sulfide decorated on cobalt sulfide for modulating the electronic structure and retarding the phase change of the underlying cobalt sulfide due to the high oxophilicity and strong electronic interaction, as well as the metallic feature.
Designing a multifunctional nanomedicine for integration of precise diagnosis and effective treatment of tumors is desirable but remains a great challenge. Here, we report a multifunctional nanomedicine based on WS2 quantum dots (QDs), which was prepared by a facile and "green" method through physic …
With fascinating optical, electronic, and mechanical properties, tungsten disulfide (WS2) and molybdenum disulfide (MoS2) quantum dots (QDs) are promising for related applications. Their bandgap energy, photoluminescence, and electrochemical properties are closely related to their size, morphology, dimensionality, crystal phase, …
Tungsten disulfide | WS2 or S2W | CID 82938 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, …
The copper tungsten sulfide nanostructures were grown on the surface of Ni via the hydrothermal method. Briefly, the precursor solution containing 0.005 mol of Na 2 WO 4, 0.01 mol of CuCl 2, and 0.025 mol of C 2 H 5 NS was dissolved in a solution containing water (20 mL) and ethanol (20 mL) until the formation of a clear …
Tungsten Disulfide, also known as Tungsten Sulfide or WS2 ("W" is the chemical symbol for Wolfram which is the original chemical name for Tungsten), is a chemical compound that occurs naturally as the mineral Tungstenite and that can also be produced chemically. It is one of the most lubricious materials known.
Tungsten sulfide (WS x) thin films are successfully deposited by ALD using a metal-organic precursor [W(CO)(CH 3 CH 2 C≡ CCH 2 CH 3)] and H 2 S as precursor and reactant. Typical self-limiting growth with a considerably high GPC of ∼0.13 nm at 300 °C was evident for this process along with almost no incubation period. Several …
Tungsten Disulfide (WS 2), one of the two-dimensional transition metal dichalcogenides (TMDCs), has attracted much attention in the catalysis field due to the presence of active sites located ...
Tungsten sulfide (S2W) is a chemical compound that exists naturally in the form of a rare mineral called tungstenite. It is used as a principal component of catalysts in processes such as hydrogenation of crude oil, hydrodesulfurization and …
The amorphous-molybdenum-based and tungsten sulfide composites were fabricated using the hydrothermal method. 100 mg MoS x (or WS 2-400 °C) was mixed with various quantities of carbon materials (rGO, CNT, and CB super-P) in 100 ml DI (or dimethylformamide (DMF)). These mixtures were then placed in a 200 ml Teflon-lined …
To understand the electrochemical actuation of tungsten sulfide from the atomic scale to the macroscopic scale, density functional theory calculations are conducted and an electrochemomechanical coupling model is proposed. A new generation of subvolt electric-driven actuators used in underwater robotics can be developed by modulating the ...
About Tungsten Sulfide. Tungsten Sulfide is a moderately water and acid soluble Tungsten source for uses compatible with sulfates. Sulfate …
This article reports the preparation of tungsten metal (W) and other tungsten-based thin films using a F-free W metalorganic precursor tris(3-hexyne) mono-carbonyl tungsten [W(EtC≡CEt)3(CO)] (Et ...
Tungsten(IV) sulfide nanopowder, 90 nm avg. part. size (SEM), 99% trace metals basis; CAS Number: 1; EC Number: 235-243-3; Synonyms: Monotungsten disulfide,Tungsten disulfide; Linear Formula: WS2; find Sigma-Aldrich-790583 MSDS, related peer-reviewed papers, technical documents, similar products & more at Sigma …
Tungsten(IV) sulfide (WS 2) is a transition metal dichalcogenide with good catalytic, optical and electronic properties.WS 2 can be used as a solid lubricant for a variety of applications such as aerospace, cutting tools and automotive systems.
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It can be found that the synthesized tungsten disulfide nanostructure is a single crystal with the (002), (004), (103), and (110) crystal planes, which are consistent with those observed in the XRD patterns. A two-dimensional transition metal sulfide molybdenum disulfide with similar structure has been applied in electronic devices.
Synthesis of high-quality monolayer tungsten disulfide with chlorophylls and its application for enhancing bone regeneration. Yi-Wen Chen, Ming-You Shie, Chien …
Compared with binary transition-metal dichalcogenides (TMDCs), ternary alloys or heterojunctions have more abundant properties. The spin-coating method has been widely used in the synthesis of TMDCs. However, there is still a lack of research on the effect of acidity and alkalinity of precursor solutions on the epitaxial growth of TMDCs. It is found …
Monolayer tungsten disulfide is a direct-gap semiconductor with high photoluminescence yield that can achieve a reasonably high on/off current ratio (>10 5) in field-effect transistor geometries.
The undoped tungsten sulfide annealed at 210 °C displays a branched texture with a typical dimension of several micrometers (Fig. S2a–c).In contrast, as shown in Fig. 1 a and b, the nickel doped film exhibits a uniform nanoporous morphology with characteristic dimensions of 50–300 nm with a thickness of about 18 μm (Fig. S3). The …
tungsten sulphide; tungsten trisulfide; tungsten(VI) sulfide; The oxidation number of tungsten in tungsten trisulphide is 6. Synthesis. Not available. Element analysis. The table shows element percentages for WS 3 (tungsten trisulphide). Element % S: 34.35: W: 65.65: Isotope pattern for WS 3.
In the family of WX 2, preparation of tungsten sulfides is known to be easier than that of other tungsten chalcogenides, simply due to the fact that sulfide precursors are more …
Although tungsten disulfide (WS 2) has a crystal structure analogous to that of MoS 2, it exhibits superior biocompatibility and physical and photoelectrochemical properties 12,13,14.
Cubic-architectured tungsten sulfide @ Cu-Fe bimetallic electrodes for dye-sensitized solar cells, hybrid supercapacitors, and piezoelectric nanogenerators ... Meanwhile, the XPS narrow spectra of tungsten ion show three peaks located at binding energy of 31.09 eV, 35.67 eV, and 37.89 eV attributed to W4f 7/2, W4f 5/2, and W 5p …
Tungsten (IV) sulfide powder, 2 μm, 99%; CAS Number: 1; EC Number: 235-243-3; Synonyms: Tungsten disulfide; Linear Formula: WS2; find Sigma-Aldrich-243639 …
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In this work, we investigated the growth behaviour of tungsten sulfide (WS x) on carbon surfaces inside the confined nanopores. Experimental and computational studies revealed the preferential bonding between the basal planes of WS x and carbon surfaces, as well as the subsequent horizontal growth of WS x .
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