copper sulfide properties

Mixed monosulfide and disulfide compounds of copper contain both monosulfide (S2−) as well as disulfide (S2)n− anions. These compounds can be differentiated by their crystalline structure. Strong generalities exist in this class. Figure 4: appearance of copper (II) sulfide. It is a moderate conductor of electricity. Physical Properties The molar mass of the anhydrous and the pentahydrate forms of copper sulfate are 159.609 grams/mole and 249.685 grams per mole respectively. Cleavage is perfect in one direction forming thin sheets. Copper sulfides describe a family of chemical compounds and minerals with the formula CuxSy. Free samples program. Copper (II) sulfide has a melting point of 220 ° C where it decomposes, is insoluble in water, hydrochloric and sulfuric acid and is soluble in nitric acid, ammonium hydroxide and potassium cyanide (Royal Society of Chemistry, 2015 ). As copper sulfate is a naturally occurring compound, it does not degrade under normal environmental conditions and does not reduce its presence in bodies of water by volatilization. Copper sulfide (I) is used as semiconductor and in photographic applications (americanelements, 1998-2017). It has been mined for centuries and is one of the most profitable copper ores. (2009, January 23). [6], The bonding in copper sulfides cannot be correctly described in terms of a simple oxidation state formalism because the Cu-S bonds are somewhat covalent rather than ionic in character, and have a high degree of delocalization resulting in complicated electronic band structures. Alginate-based functional nanocomposite films were prepared by the incorporation of copper sulfide nanoparticles (CuSNP) using a solution casting method and characterized their properties. Retrieved from pubchem.ncbi.nlm.nih.gov. The valence of copper in sulphides and selenides: An X-ray photoelectron spectroscopy study, Folmer J.C.W., Jellinek F., Journal of the Less Common Metals, 76, 1-2, ( 1980), 153-162, The electronic structure of pyrites, particularly CuS. Nuggets of the metal could be found in streams in a few areas, and its properties allowed it to be easily worked without a required processing step. Sulfidation of copper oxide nanoparticles and properties of resulting copper sulfide† Rui Ma , abh John Stegemeier , ab Clément Levard , bc James G. Dale , bd Clinton W. Noack , a Tiffany Yang , ab Gordon E. Brown, Jr. efg and Gregory V. Lowry * ab In the mining industry, bornite or chalcopyrite minerals, which consist of mixed sulphides of copper and iron, are often referred to as"copper sulphides". Copper monosulfide is a chemical compound of copper and sulfur. Fabrication and applications of copper sulfide (CuS) nanostructures. Journal of Solid State Chemistry Volume 238, 25-40. Both Cu2S and the copper-deficient Cu1.97S have very similar but distinguishable electronic and crystal structure. Copper is an excellent conductor of electricity. Further evidence that the assignment of the so-called "valence hole" should be to the S2 units in these two formulae is the length of the S-S bonds, which are significantly shorter in CuS (0.207 nm) and CuS2 (0.203 nm) than in the "classical" disulfide Fe2+(S2)2− (0.218 nm). Sulfide ores contain sulfur. Retrieved from americanelements.com. It is not flammable or combustible. [7]) give the mixed valence formula (Cu+)2(Cu2+)(S2−)(S2)2− for CuS, X-ray photoelectron spectroscopic data give strong evidence that, in terms of the simple oxidation state formalism, all the known copper sulfides should be considered as purely monovalent copper compounds, and more appropriate formulae would be (Cu+)3(S2−)(S2)− for CuS, and (Cu+)(S2)− for CuS2, respectively. Contains copper and lead sulfide in copper concentrates. That is because they have high copper content, and the copper in … Geng Ku, M. Z. They have a molecular weight of 159.16 g / mol and 95.611 g / mol and a density of 5.6 g / ml and 4.76 g / ml for copper (I) and (II) sulfide respectively (Nati… Copper(I) Sulfide is a crystalline solid used as a semiconductor and in photo optic applications. Investigations of covellite (CuS) indicate that there are other metastable Cu-S phases still to be fully characterised.[1]. Copper sulfides can be classified into three groups: Monosulfides, 1.6 ≤ Cu/S ≤ 2: their crystal structures consist of isolated sulfide anions that are closely related to either hcp or fcc lattices, without any direct S-S bonds. • Flotation recovery behavior is consistent with mineral surface analyses. You should rinse your mouth with cold water and give the victim 1-2 cups of water or milk to drink. National Center for Biotechnology Information. Zinc, cadmium, mercury, copper, silver, and many other elements occur in nature as sulfides. If exposed to heat, it may release toxic vapors of sulfur or copper oxide which may be harmful to health. Copper is a chemical element with the symbol Cu (from Latin: cuprum) and atomic number 29. Fracture is flaky. In case of inhalation, the victim should be taken to a cool place. Pyrite is a major source of iron and is one of the most abundant of the sulfur minerals. Covelita is not a distributed mineral, but its iridescent charms can captivate the admiration of anyone who sees indigo blue crystals. Compare Products: Select up to 4 products. Copper sulfate is water-soluble and is absorbed by organic media such as clay and humus. The copper ions are distributed in a complicated manner over interstitial sites with both trigonal as well as distorted tetrahedral coordination and are rather mobile. Whatever their source, copper sulfides vary widely in composition with 0.5 ≤ Cu/S ≤ 2, including numerous non-stoichiometric compounds. THE MINERAL COVELLITE. Copper (Cu). Although good crystals are rare, it is the luster and color of this mineral that make it remarkable (THE MINERAL COVELLITE, 2014). Copper (II) Sulfide. The naturally occurring mineral binary compounds of copper and sulfur are listed below. This imaging approach has great potential for obtaining a molecular picture of breast cancer. (S.F.). Search results for copper bromide at Sigma-Aldrich. Figure 1: Structure of the copper sulfide (I) (left) and copper (II) sulfide (right). By using this website or by closing this dialog you agree with the conditions described, With different manufacturing procedures (solvothermic routes, aerosol methods, solution methods and thermolysis). Properties of Copper Sulfide. Retrieved from galleries.com. Copper sulfides can be classified into three groups: Monosulfides, 1.6 ≤ Cu/S ≤ 2: their crystal structures consist of isolated sulfide anions that are closely related to either hcp or fcc lattices, without any direct S-S bonds. The reasons for this is its high copper content (67% atomic ratio and nearly 80% by weight) and the ease at which copper can be separated from sulfur. In the mining industry, the minerals bornite or chalcopyrite, which consist of mixed copper-iron sulfides, are often referred to as "copper sulfides". Copper Sulfide Nanoparticles As a New Class of Photoacoustic Contrast Agent for Deep Tissue Imaging at 1064 nm. (2015). The elemental copper will react with hydrogen sulfide to produce a purple-black-ish copper sulfide product, visible on the surface of the copper rod. Different stoichiometric compositions can be obtained by changing the redox atmosphere of the synthetic environment. Retrieved from onboces.org. ACS Nano 6 (8), 7489-7496. Copper (I) and (II) sulphides are not classified as hazardous, however they may be toxic if swallowed due to the production of hydrogen sulphide. In virtually all of the sulfides, bonding is covalent, but some have metallic properties. Although the richest calcosine deposits have been mined, it is probably still being mined and will certainly be mined in the future (THE MINERAL CHALCOCITE, 2014). Associated Minerals include pyrite, chalcocite, chalcopyrite, cuprite, bornite and other copper sulfides. In addition, the majority of its members are semiconductors. Copper (II) sulfide. This bond length difference has been ascribed to the higher bond order in (S-S)− compared to (S-S)2− due to electrons being removed from a π* antibonding orbital. Umair Shamraiz, R.A. (2016). Depending on their composition, these copper sulfides are either semiconductors or metallic conductors. Copper's metallic luster attracted people's attention. Retrieved from chemspider.com. As copper sulphate contains 25% copper metal, the copper content of a 1% Bordeaux mixture would be 0-25 % copper. We use cookies to provide our online service. Description. The issue of the valence of copper in sulfides (as well as selenides and tellurides) continues to be revisited in the literature. Copper sulfide (I) has a monoclinic structure whereas copper (II) sulfide has a hexagonal structure (National Center for Biotechnology Information, S.F.). Preparation of sulfides Copper sulfide has been regarded as a promising thermoelectric material with relatively high thermoelectric performance and abundant resource. Absorption is influenced by a number of factors including the chemical forms of copper: oxides, hydroxides, iodides, glutamates, citrates, & pyrophosphates of copper are readily absorbed, but copper sulfides & other water insoluble salts are poorly absorbed. Immediate steps should be taken to limit spread to the environment. Royal Society of Chemistry. [9] NMR studies on CuS show that there are two distinct species of copper atom, one with a more metallic nature than the other. Most major ores of important metals such as copper, lead and silver are sulfides. Dicopper (1+) sulfide. Copper sulfide has received wide attention as a potential thermoelectric material with high performance and abundant resource. Copper sulfide (I) has a melting point of 1100 ° C and is insoluble in water and acetic acid, being partially soluble in ammonium hydroxide (Royal Society of Chemistry, 2015). Although many textbooks (e.g. For example, pyrite, which is also called fool’s gold owing to its brassy yellow colour, is a sulfide of iron with the formula FeS 2. Insoluble in water and denser than water. Anhydrous CuSO 4 has a grey-white, powdery appearance whereas the pentahydrate has a bright blue colour. Eng.,19', 204 (2006). Azurite, malachite, 24; 2; 247-258, Copper sulfides from Alberta; yarrowite Cu, The crystal structure of roxbyite, Cu58S32. And applications (photocatalytic degradation, cancer cell ablation, electrode material in lithium-ion and gas-cell batteries, field emission properties, super capacitor applications, photoelectrochemical performance of QDSCs, photocatalytic reduction of organic pollutants, bio- Electrochemical detection, enhanced PEC characteristics of pre-cut CuS film electrodes) (Umair Shamraiz, 2016). Copper (I) Sulfide. Symptoms include vomiting, gastric pain and dizziness, may cause irritation to the skin and eyes and inhalation may cause respiratory irritation (MATERIAL SAFETY DATA SHEET Copper Sulfide, 1995). Copper sulfate melts at temperatures above 100 degrees Celsius and becomes an anhydrous crystal at temperatures above 200 degrees Celsius. Term contracts & credit cards/PayPal accepted. The quantity of lime used can be reduced considerably. CuS NP allowed visualization of the mouse brain after intracranial injection, rat lymph nodes at 12 mm below the skin after interstitial injection, and agarose gel containing CuS NP embedded in chicken breast muscle To a depth of ~ 5 cm. Their applications also include use in solar cells, luminous paints, electrodes and certain varieties of solid lubricants (Britannica, 2013). Copper (I) and (II) sulfide have similar appearances, both being dark, gray or black crystals. Ultra Dry Copper Sulfide CuS bulk & research qty manufacturer. It can be classified into three groups, namely monosulfide, disulfide and mixed monosulfide. [13] This apparent discrepancy with the X-ray photo-electron spectrum data simply highlights the problem that NMR has in assigning oxidation states in a mixed-valence compound. Both minerals and synthetic materials comprise these compounds. Chalcocite, copper(I) sulfide (Cu 2 S), is an important copper ore mineral. The majority of sulfides are metallic, opaque, generally sectile, soft to average in hardness and they have high densities, black or dark-colored streaks, and an igneous origin. (2012). The Copper sulphides Describe a family of chemical and mineral compounds with the formula Cu X S Y . Copper (I) and (II) sulfide have similar appearances, both being dark, gray or black crystals. The copper ions are distributed in a complicated manner over interstitial sites with both trigonal as well as distorted tetrahedral coordination and are rather mobile. Retrieved from azom.com. Copper sulfide belongs to a family of chemical compounds and minerals with the formula CuxSy. (1998-2017). These compounds comprise economically important minerals and synthetic materials. It is strongly reactive with other metals such as … The reasons are due to its high copper content (atomic ratio 67% and almost 80% by weight) and the ease with which copper can be separated from sulfur. In case of contact with skin, rinse immediately with plenty of water for 15 minutes while removing contaminated clothing. They have a molecular weight of 159.16 g / mol and 95.611 g / mol and a density of 5.6 g / ml and 4.76 g / ml for copper (I) and (II) sulfide respectively (National Center for Biotechnology Information, SF). The oxidation states of copper and iron in mineral sulfides, and the oxides formed on initial exposure of chalcopyrite and bornite to air, Siew Wei Goh, Buckley A. N. Lamb R.N., Rosenberg R. A., Moran D., Geochimica et Cosmochimica Acta, 70, 9, 2006, 2210-2228, Electronic environments in carrollite, CuCo2S4, determined by soft X-ray photoelectron and absorption spectroscopy, http://rruff.geo.arizona.edu/doclib/hom/villamaninite.pdf, Copper sulfides mineral information and data, https://en.wikipedia.org/w/index.php?title=Copper_sulfide&oldid=995885077, Creative Commons Attribution-ShareAlike License, This page was last edited on 23 December 2020, at 11:54. Retrieved from britannica.com. If not breathing, administer artificial respiration (Copper (II) Sulfide, 2009). PubChem Compound Database; CID = 14831. LABEL IDENTITY Copper Sulfide CHEMICAL NAME/SYNONYMS Copper Sulfide FORMULA Cu2S (or Cu1.8S) CHEMICAL FAMILY Metal Sulfide CAS REGISTRY NUMBER 22205-45-4, LISTED IN THE TSCA INVENTORY HAZARDOUS INGREDIENTS Copper Sulfide %: 100 TLV: 1mg/m3 OSHA/PEL: 1mg/m3 (as Cu) (as Cu) PHYSICAL AND CHEMICAL PROPERTIES Copper sulphide is one of the most important metal chalcogenide, which has attracted much 2 interest in the recent research due to its spec ial properties and potential applications. Copper sulfide nanostructures and their sodium storage properties . While the liquid-like Cu ions play an important role for the low κ L and high ZT values, grain-boundary engineering is needed to further enhance the phonon scattering and the thermal stability of Cu 2- x S. Some copper sulfides are economically important ores. W. G. Mumme, R. W. Gable, V. Petříček, Canadian Mineralogist; (2012); 50; 423-430. • Oxidized iron species dissolve as the complex ion then reprecipitates as ferric oxide. Today most copper is produced from sulfide ores. In case of contact with eyes, they should be rinsed immediately with sufficient amount of water for 15 minutes, raising the lower and upper eyelids occasionally. Retrieved from onboces.org. Therefore, this group of copper sulfides shows ionic conductivity at slightly elevated temperatures. These compounds can be differentiated by their crystalline structure. PubChem Compound Database; CID = 62755. THE MINERAL CHALCOCITE. *Please select more than one item to compare A good example is a 2009 study of the ternary compound CuCo2S4[14] (a spinel mineral known as carrollite) that "was undertaken primarily to establish unequivocally the oxidation state of the Cu in the mineral" and concluded "that the experimental and simulated Cu L2,3 absorption spectra established an unequivocal oxidation state of CuI in the carrollite bulk". Its crystal structure is analogous to that of pyrite, with all sulfur atoms occurring as S-S units. However, it is not the main mineral of copper due to its scarcity. Whatever their source, copper sulphides vary widely in composition with 0.5 ≤ Cu / S ≤ 2, including numerous non-stoichiometric compounds. Also the copper (II) sulfide (covelita) is used in the study of nanoparticles: In the work of Geng Ku (2012) the use of nanoparticles of semiconductor copper sulphide (CuS NPs) was demonstrated for the visualization of photoacoustic tomographies with an Nd: YAG laser at a wavelength of 1064 nm. MATERIAL SAFETY DATA SHEET Copper Sulfide. NaHS sulfurizes oxidized copper species, but not oxidized iron species. (1995, November). At very high pressures, a copper disulfide, CuS2, can be synthesized. He hydrogen peroxide Reacts vigorously with copper (II) sulfide and explodes in contact with a concentrated solution of chloric acid or cadmium, magnesium or zinc chlorates. Retrieved from pubchem.ncbi.nlm.nih.gov. Specific Gravity is 4.6 to 4.8 Streak gray to black. National Center for Biotechnology Information. Oxide ores contain oxygen. The optical properties of these Cu2−xS NCs were characterized by UV−vis spectroscopy and NIR. [8][9][10] Classes of copper sulfides. Structural and compositional changes in copper sulfide during leaching and dissolution, Whiteside L.S, Goble R.J, The Canadian Mineralogist; (1986);. On the other hand, copper (II) sulfide finds applications in solar cells, superionic conductors, photodetectors, electroconductive electrodes, photothermal conversion devices, microwave protective coating, active radio wave absorbers, gas sensors and radiation polarizers Infrared (azom, 2013). Royal Society of Chemistry. Siew Wei Goh, Buckley A.N., Lamb R.N: Copper(II) sulfide?, Min. If swallowed, call a poison control center immediately. In chemistry, a "binary copper sulfide" is any binary chemical compound of the elements copper and sulfur. Primary hazard is to the environment. Copper Sulfide (CuS) Semiconductors. CuS, for example, can be written as Cu3(S2)S. Several nonstoichiometric compounds with Cu:S ratios between 1.0 and 1.4 also contain both monosulfide as well as disulfide ions. It occurs in nature as the dark indigo blue mineral covellite. Large-scale synthesis and low-cost production of high-performance thermoelectric materials are keys to … (2015). Also massive and in small grains in sulfide ore bodies. Copper disulfide is a metallic conductor due to the incomplete occupancy of the sulfur p band. Retrieved from chemspider.com. A black colloidal precipitate of CuS is formed when hydrogen sulfide, H 2 S, is bubbled through solutions of Cu(II) salts. (2014). Both minerals and synthetic materials comprise these compounds. • pH and NaHS concentration affect Fe 2 O 3 reprecipitation onto bornite and chalcopyrite. Calcosine has been mined for centuries and is one of the most profitable copper minerals. Britannica, T. E. (2013, Aug. 23). Retrieved from galleries.com. Prominent copper sulfide minerals include Cu2S (chalcocite) and CuS (covellite). And lead sulfide in copper concentrates sulfide ores are typically the most profitable copper minerals and copper ( ). 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Water and give the victim 1-2 cups of water or milk to.... And becomes an anhydrous crystal at temperatures above 200 degrees Celsius and an... Varieties of solid State chemistry Volume 238, 25-40 sulfate are 159.609 and... Semiconductors or metallic conductors these compounds can be obtained by changing the redox atmosphere of the copper sulfide as... Gray or black crystals grams/mole and 249.685 grams per mole respectively may be harmful health! Conductor due to its scarcity captivate the admiration of anyone who sees indigo blue mineral covellite to! Copper due to its scarcity synthetic materials V. Petříček, Canadian Mineralogist ; 2012! Sulfide product, visible on the surface of the valence of copper sulfide '' is binary...

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