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Copper selenide - Wikipedia

From Wikipedia, the free encyclopedia

Copper selenide
Names
IUPAC name Copper Selenide
Identifiers
CAS Number	Cu₂Se: 20405-64-5 CuSe: 1317-41-5
3D model (JSmol)	Cu₂Se: Interactive image CuSe: Interactive image
ChemSpider	Cu₂Se: 21170409 CuSe: 3406911
ECHA InfoCard	100.039.799
EC Number	Cu₂Se: 243-796-7 CuSe: 215-272-8
PubChem CID	Cu₂Se: 6914519 CuSe: 101943149
UNII	Cu₂Se: 44P3QN57K9
CompTox Dashboard (EPA)	Cu₂Se: DTXSID6066606
InChI Cu₂Se: InChI=1S/2Cu.Se Key: KTLOQXXVQYUCJU-UHFFFAOYSA-N CuSe: InChI=1S/Cu.Se Key: IRPLSAGFWHCJIQ-UHFFFAOYSA-N
SMILES Cu₂Se: [Cu].[Cu].[Se] CuSe: [Cu].[Se]
Properties
Chemical formula	Cu₂Se
Molar mass	206.063 g·mol⁻¹
Appearance	Dark blue, black
Density	6.84 g/mL^[1]
Hazards
GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H201, H331, H373, H410
Precautionary statements	P260, P261, P264, P270, P271, P273, P301+P310, P304+P340, P311, P314, P321, P330, P391, P403+P233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Copper selenide is an inorganic binary compound between copper and selenium. The chemical formula depends on the ratio between the two elements, such as CuSe or Cu₂Se.

The crystalline structure and electronic behavior is determined by its elemental composition.^[2] Stoichiometric copper selenide is a zero bandgap material with metal-like behavior.^[3] Copper-deficient Cu_2-xSe (non-stoichiometric) is an intrinsic p-type semiconductor with direct and indirect bandgap energies in the range of 2.1–2.3 eV and 1.2–1.4 eV, respectively.^[4] It is frequently grown as nanoparticles or other nanostructures.^[5]^[6]^[7]

Uses

Copper selenide is produced in situ to form a protective black coating on iron or steel parts in some cold-bluing processes.^[8] Bluing solutions that operate in this manner will typically be labeled as containing selenous acid or selenium dioxide.^[9]^[10] It has also been investigated for use in the treatment of colon cancer.^[6]

Natural occurrences

Copper selenides are the most common selenium minerals. CuSe is known in mineralogy as klockmannite,^[11] while Cu₂Se occurs as two polymorphs, berzelianite^[12] (isometric, more common) and bellidoite (tetragonal). There are more natural Cu selenides to date, including umangite, Cu₃Se₂ and athabascaite, Cu₅Se₄.^[13]

References

^ "Copper (I) selenide". Sigma-Aldrich. Retrieved 12 April 2016.
^ Lanling, Zhao; Wang, Xiaolin; F. Yun, Frank (5 February 2015). "The Effects of Te2− and I− Substitutions on the Electronic Structures, Thermoelectric Performance, and Hardness in Melt-Quenched Highly Dense Cu2-xSe". Advanced Electronic Materials. 1 (3). doi:10.1002/aelm.201400015. S2CID 137099918. Retrieved 28 June 2021.
^ Tyagi, Kriti; Gahtori, Bhasker (June 2015). "Enhanced thermoelectric performance of spark plasma sintered copper-deficient nanostructured copper selenide". Journal of Physics and Chemistry of Solids. 81: 100–105. Bibcode:2015JPCS...81..100T. doi:10.1016/j.jpcs.2015.01.018.
^ C. Singh, Subhash (September 2018). "Structural and compositional control in copper selenide nanocrystals for light-induced self-repairable electrodes". Nano Energy. 51: 774–785. Bibcode:2018NEne...51..774S. doi:10.1016/j.nanoen.2018.07.020. PMC 6100260. PMID 30177955.
^ Xiao, Guanjun; Ning, Jiajia; Liu, Zhaoyang; Sui, Yongming; Wang, Yingnan; Dong, Qingfeng; Tian, Wenjing; Liu, Bingbing; Zou, Guangtian (2012). "Solution synthesis of copper selenide nanocrystals and their electrical transport properties". CrystEngComm. 14 (6): 2139. doi:10.1039/c2ce06270d.
^ ^a ^b Hessel, Colin M.; Pattani, Varun P.; Rasch, Michael; Panthani, Matthew G.; Koo, Bonil; Tunnell, James W.; Korgel, Brian A. (2011-05-10). "Copper Selenide Nanocrystals for Photothermal Therapy". Nano Letters. 11 (6): 2560–2566. Bibcode:2011NanoL..11.2560H. doi:10.1021/nl201400z. PMC 3111000. PMID 21553924.
^ Patidar, D.; Saxena, N. S. (2012-03-15). "Characterization of single phase copper selenide nanoparticles and their growth mechanism". Journal of Crystal Growth. 343 (1): 68–72. Bibcode:2012JCrGr.343...68P. doi:10.1016/j.jcrysgro.2012.01.026.
^ "Room Temperature Black Oxide". Archived from the original on 28 April 2016. Retrieved 12 April 2016.
^ "Insta-Blak 333 MSDS" (PDF). Archived from the original (PDF) on 23 April 2016. Retrieved 12 April 2016.
^ "Oxpho-Blue MSDS" (PDF). Retrieved 12 April 2016.
^ Berry, L. G. (1954). "The crystal structure of covellite, cuse and klockmannite, cuse". American Mineralogist. 39 (5–6): 504–509.
^ Harris, D. C.; Cabri, L. J.; Murray, E. J. (1970). "An occurrence of a sulphur-bearing berzelianite" (PDF). The Canadian Mineralogist: 737–740.
^ Harris, D. C.; Cabri, L. J.; Kaiman, S. (1970). "Athabascaite: A New Copper Selenide Mineral from Martin Lake, Saskatchewan". The Canadian Mineralogist. 10 (2): 207–215.

v t e Copper compounds
Cu(0,I)	Cu₅Si
Cu(I)	CuBr CuCN CuCl CuF CuH CuI Cu₂C₂ Cu₂Cr₂O₅ Cu₂O CuOH CuNO₃ Cu₃P Cu₂S CuSCN C₆H₅Cu
Cu(I,II)	Cu₄O₃ Cu₃H₄O₈S₂
Cu(II)	Cu(BF₄)₂ CuBr₂ CuC₂ Cu(CH₃COO)₂ Cu(CF₃COO)₂ Cu(C₃H₅O₃)₂ CuCO₃ Cu₂CO₃(OH)₂ Cu(CN)₂ CuCl₂ / KCuCl₃ / K₂CuCl₄ Cu(ClO₃)₂ Cu(ClO₄)₂ CuF₂ Cu(NO₃)₂ Cu₃(PO₄)₂ Cu₃(BO₃)₂ Cu(N₃)₂ CuC₂O₄ CuO CuO₂ Cu(OH)₂ CuS Cu(SCN)₂ CuSO₄ Cu₃(AsO₄)₂ Cu(C ₁₁H ₂₃COO) ₂ Cu(C₁₇H₃₅COO)₂ CuTe CuTe₂
Cu(III)	K₃CuF₆
Cu(IV)	CuO₂ Cs₂CuF₆

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Uses

Natural occurrences

See also

References