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The novel mechanisms of formation and conversion of copper sulfide nanoparticles underline the role of sulfur species; this is important for understanding …
1. Introduction. Determination of the copper (and sulfur) oxidation state in copper sulfides is still a debated issue. Uncertainty in this matter goes hand in hand with the uncertainty in the real chemical composition and structure of copper sulfide materials, for which at least nine defined structural phases are known to exist [1]: chalcocite (Cu 2 …
Diversified copper sulfide (Cu 2−x S) micro-/nanostructures: a comprehensive review on synthesis, modifications and applications S. …
High-purity copper sulfides including CuS, Cu 1.75 S and Cu 2 S were synthesized using an easy and controllable two-step heating method in a mixed solution of ethylene glycol and triethylenetetramine. Petal-like CuS, near-spherical Cu 2 S, and regular hexagonal Cu 1.75 S were obtained by simply changing the solvent volume ratio (SVR) …
Copper exists as a variety of sulfides, and the most common stoichiometric sulfide is chalcocite Cu 2 S. However, copper also forms a number of non-stoichiometric sulfides such as digenite (Cu 9 S 5), anilite (Cu 7 S 4), and yarrowite (Cu 9 S 8), and copper exists in mixed-valence states, namely, as Cu I and Cu II. Although the sulfide …
They provide suggestions for enhancing crystal structure stability in the copper sulfide system and a reference concept for optimizing the structures of other (pseudo-)polymorphic thermoelectric materials, such as SnSe, Cu 2 Se, GeTe, and Cu 12 Sb 4 S 13. Stabilization of the HT phase at RT for thermoelectric materials may also …
3.1 Anilite (Cu 7 S 4). Several polymorphs of copper sulfide, of general formula Cu x S (1 ≤ x ≤ 2), have been characterized. In these structures, the location of Cu atoms in the close-packed S lattice is not well identified and their positions change as a function of the composition (x).In a copper-rich environment, the experimentally …
Fabrication of copper sulfide coatings. For the growth of a continuous CuS shell layer on the fabric surface, identical molar masses of CuSO 4 and Na 2 S 2 O 3 were dissolved in 300 mL deionized water. Then the PEI/PA-CF (10 cm × 10 cm) was placed vertically into the solution, and kept stationary at 80 °C for 2 h. Upon completion of the ...
Due to the high mobility of copper ions in numerous structurally-related phases, copper sulphide (Cu 2−x S, 0 ≤ x ≤ 1) has been widely used as a starting template to fabricate various heterostructures via cation exchange. Such nanoheterostructures can possess unique combinations of physical properties that could be useful in diverse …
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Copper sulfides (Cu x S, x = 1–2), have been recognized as industrially significant materials with diverse applications in exotic technological fields of electronics, sensors, catalysis, photovoltaics, energy storage, etc. Their promising electrochemical performance, ease of availability, and low production cost have motivated enormous …
Chemical Properties. Copper is a chemical element with the symbol Cu and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. Here are some of the key chemical properties of copper: Atomic number: 29. Atomic weight: 63.55. Density: 8.96 g/cm³.
Phase pure copper sulfide nanoparticles with various shapes and superlattices were synthesized using Bis(O-isobutyldithiocarbonato)copper(II) complex as single source precursor (SSP) by the hot injection method.Optimization of reaction conditions provide mono-disperse nanospheres, nanorods, hexagonal disks and cubic …
Chemical Properties. Copper (I) sulfide, Cu2S, [2], MW 159.15, is naturally occurring as the blue or gray mineral chalcocite, [2]. Copper (I) sulfide or copper glance is insoluble in water but decomposes in nitric acid and concentrated sulfuric acid. Copper (I) sulfide is prepared by heating mixtures of copper and sulfur in …
The method used to extract copper from its ores depends on the nature of the ore. Sulfide ores such as chalcopyrite ( CuFeS2 C u F e S 2) are converted to copper by a different method from silicate, carbonate or sulfate ores. Chalcopyrite (also known as copper pyrites) and similar sulfide ores are the commonest ores of copper.
Article. Open access. Published: 29 May 2019. Copper sulfide nanoparticles as high-performance cathode materials for Mg-ion batteries. Kostiantyn V. Kravchyk, Roland Widmer, Rolf Erni, Romain...
Stable water-soluble copper sulfide(Cu2S) quantum dots(QDs) with near-infrared emission were synthesized using N-acetyl-L-cysteine(NAC) as a modifier in aqueous solution and nitrogen atmosphere at ...
Abstract. Over the past few years, considerable attention has been paid to biomedical applications of copper sulfide nanostructures owing to their enhanced physiochemical and pharmacokinetics characteristics in …
1. Introduction. Copper sulfide is a binary inorganic material which has a general formula Cu x S y.It is present in both synthetic materials and in minerals in the form of CuS (covellite) and Cu 2 S (chalcocite). Copper sulfide is one of the most important metal chalcogenide, which has attracted much interest in the recent research due to its …
Copper sulfides (Cu x S) are widely used as the promising electrode materials for secondary batteries because of the rich abundance, low cost, excellent …
In this work, the spindle magnetite nanoparticles (SMNPs) and flower-like copper sulfide microspheres (FCSMSs) were synthesized via hydrothermal method. The structures, chemical composition and morphologies of samples were analyzed and characterized in detail. The microwave absorption properties of single-layer and double …
copper sulphide. Formula: CuS. Molecular weight: 95.611. IUPAC Standard InChI: InChI=1S/Cu.S. Copy Sheet of paper on top of another sheet. IUPAC Standard InChIKey: BWFPGXWASODCHM-UHFFFAOYSA-N. Copy Sheet of paper on top of another sheet. CAS Registry Number: . Chemical structure:
Among all metal sulfides, copper sulfide is a vital transition metal sulfide/chalcogenide and a p-type semiconducting nanomaterial having a direct energy gap of 1.2-2.0 eV or a narrow energy gap of 2.2 eV [24, 25] (Fig. 1 a). Cu 2‐x S crystal structure having distinct x values also possesses semi-metallic nature. CuS has been extensively ...
95. LEARN ABOUT THESE METRICS. Add to. Export RIS. Read Online PDF (2 ) Get e-Alerts. SUBJECTS: Copper, Surface plasmon resonance, Cations, …
Herein, a semiconductor of copper sulfide (CuS) was integrated into cellulose hydrogel to fabricate a solar steam evaporator. Sustainable and low-cost cotton linter (cellulose) was regenerated by NaOH/urea solvent. Epichlorohydrin was added as a cross-linking agent to enhance the mechanical robustness of the composite hydrogel, …
Here, we not only demonstrate that copper sulfide nanoplates exhibit close-to-theoretical capacity (~560 mAh g–1) and long-term cyclability, but also reveal that their sodiation follows a non ...
To make copper sulphide, dissolve 2 g sodium thiosulfate in 100 ml deionized water and stir for 20 min at room temperature to produce a serum-like solution with thiosulfate ions (S 2 O 3 2−), which function as a reducing agent. 2 g copper sulphate was added to the generated serum while stirring, resulting in cupric ions (Cu 2+) in the …
The spectra demonstrate that copper sulphide emits at 490 nm, while the 2% CuS-CQD sample has a light wavelength variation and reduces the peak intensity of …
2. Remotely produced sulfide from sulfate-reducing bacteria (SRB), which is slowly transported to the copper surface (Ref 6); 3. H 2 S present in the groundwater.. The sulfide concentration anticipated for the groundwater in a geologic repository will reach the range of 10 −7 –10 −4 mol/L (Ref 7).Our previous work (Ref 8, 9) focused on the …
Abstract. This work provides a simple method for the development of a high-activity non-noble metal catalyst for the oxidation of glycerol (GLY) to formate. CuS nanosheet arrays are grown in situ on …
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