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Names | |
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IUPAC name
Hafnium disulfide
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Identifiers | |
3D model (JSmol)
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ChemSpider | |
ECHA InfoCard | 100.038.738 |
PubChem CID
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CompTox Dashboard (EPA)
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Properties | |
HfS2 | |
Molar mass | 246.62 g/mol[1] |
Appearance | Brown solid |
Density | 6.03 g/cm3[1] |
Band gap | ~1.8 eV (indirect)[2] |
Structure | |
hP3, P3m1, No 164[3] | |
a = 0.363 nm, c = 0.584 nm
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Formula units (Z)
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1 |
Related compounds | |
Other anions
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Hafnium dioxide |
Other cations
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Tungsten disulfide Molybdenum disulfide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Hafnium disulfide is an inorganic compound of hafnium and sulfur. It is a layered dichalcogenide with the chemical formula is HfS2. A few atomic layers of this material can be exfoliated using the standard Scotch Tape technique (see graphene) and used for the fabrication of a field-effect transistor.[4] High-yield synthesis of HfS2 has also been demonstrated using liquid phase exfoliation, resulting in the production of stable few-layer HfS2 flakes.[5] Hafnium disulfide powder can be produced by reacting hydrogen sulfide and hafnium oxides at 500–1300 °C.[6]
References[edit]
- ^ a b Haynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (92nd ed.). Boca Raton, FL: CRC Press. p. 4.66. ISBN 1-4398-5511-0.
- ^ Terashima, K.; Imai, I. (1987). "Indirect absorption edge of ZrS2 and HfS2". Solid State Communications. 63 (4): 315. Bibcode:1987SSCom..63..315T. doi:10.1016/0038-1098(87)90916-1.
- ^ Hodul, David T.; Stacy, Angelica M. (1984). "Anomalies in the properties of Hf(S2−xTex)1-y and Hf(Se2−xTex)1-y near the metal-insulator transition". Journal of Solid State Chemistry. 54 (3): 438. Bibcode:1984JSSCh..54..438H. doi:10.1016/0022-4596(84)90176-2.
- ^ Kanazawa, Toru; Amemiya, Tomohiro; Ishikawa, Atsushi; Upadhyaya, Vikrant; Tsuruta, Kenji; Tanaka, Takuo; Miyamoto, Yasuyuki (2016). "Few-layer HfS2 transistors". Scientific Reports. 6: 22277. Bibcode:2016NatSR...622277K. doi:10.1038/srep22277. PMC 4772098. PMID 26926098.
- ^ Kaur, Harneet (2017). "High Yield Synthesis and Chemical Exfoliation of Two-Dimensional Layered Hafnium Disulphide". Nano Research. arXiv:1611.00895. doi:10.1007/s12274-017-1636-x. S2CID 99414438.
- ^ Kaminskii, B. T.; Prokof'eva, G. N.; Plygunov, A. S.; Galitskii, P. A. (1973-07-01). "Manufacture of zirconium and hafnium sulfide powders". Soviet Powder Metallurgy and Metal Ceramics. 12 (7): 521–524. doi:10.1007/BF00796747. S2CID 95277086.
Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction