Copper selenide

Copper selenide is an inorganic binary compound consisting of copper and selenium. Its formula is sometimes described as CuSe or Cu2Se, but it is non-stoichiometric. It is a semiconductor and is frequently grown as nanoparticles or other nanostructures.[2][3][4]

Copper selenide
Names
IUPAC name
Copper Selenide
Identifiers
3D model (JSmol)
ECHA InfoCard 100.039.799
EC Number
  • 243-796-7
UNII
Properties
Cu2Se
Molar mass 206.063 g·mol−1
Appearance Dark blue, black
Density 6.84 g/mL[1]
Hazards
GHS pictograms
GHS Signal word Danger
H201, H331, H373, H400, H410
P260, P261, P264, P270, P271, P273, P301+310, P304+340, P311, P314, P321, P330, P391, P403+233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Uses

Copper selenide is produced in-situ to form a protective black coating on iron or steel parts in some cold-bluing processes.[5] Bluing solutions that operate in this manner will typically be labeled as containing selenous acid or selenium dioxide.[6][7] It has also been investigated for use in the treatment of colon cancer.[3]

Natural occurrences

Copper selenides are the most common selenium minerals. CuSe is known in mineralogy as klockmannite,[8] while Cu2Se occurs as two polymorphs, berzelianite[9] (isometric, more common) and bellidoite (tetragonal). There are more natural Cu selenides to date, including umangite, Cu3Se2 and athabascaite, Cu5Se4.[10]

See also

References
  1. "Copper (I) selenide". Sigma-Aldrich. Retrieved 12 April 2016.
  2. 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.
  3. 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. doi:10.1021/nl201400z. PMC 3111000. PMID 21553924.
  4. 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. doi:10.1016/j.jcrysgro.2012.01.026.
  5. "Room Temperature Black Oxide". Retrieved 12 April 2016.
  6. "Insta-Blak 333 MSDS" (PDF). Archived from the original (PDF) on 23 April 2016. Retrieved 12 April 2016.
  7. "Oxpho-Blue MSDS" (PDF). Retrieved 12 April 2016.
  8. Berry, L. G. (1954). "The crystal structure of covellite, cuse and klockmannite, cuse". American Mineralogist. 39 (5–6): 504–509.
  9. Harris, D. C.; Cabri, L. J.; Murray, E. J. (1970). "An occurrence of a sulphur-bearing berzelianite" (PDF). The Canadian Mineralogist: 737–740.
  10. 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.
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