Huang, Shanshan, Harris, Kenneth David Maclean  ORCID: https://orcid.org/0000-0001-7855-8598, Lopez-Capel, E., Manning, D. A. C. and Rickard, David Terence ORCID: https://orcid.org/0000-0002-4632-5711
2009.
"Amorphous Nickel Sulfide" Is Hydrated Nanocrystalline NiS with a Core-Shell Structure.
Inorganic Chemistry
48
(24)
, pp. 11486-11488.
10.1021/ic901512z
|
Abstract
The application of a range of experimental techniques shows that “amorphous nickel sulfide” (the material precipitated from aqueous solutions of NiII salts and SII− under ambient conditions) is actually a hydrated nanoparticulate material with an approximate formula NiS·1.5H2O. The particles comprise a crystalline, anhydrous core (diameter ca. 1−3 nm) with the millerite (NiS) structure, surrounded by a hydrated shell phase. The materials prepared under acidic conditions (pH = 3 and 5) transform with age to form polydymite (Ni3S4) and heazlewoodite (Ni3S2), while materials prepared at pH = 7 and 9 do not undergo this transformation. At pH = 12, the preparation procedure yields NiAs-type NiS as a metastable phase.
| Item Type: | Article |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Schools > Earth and Environmental Sciences |
| Subjects: | Q Science > QD Chemistry Q Science > QE Geology |
| Publisher: | American Chemical Society |
| ISSN: | 1520-510X |
| Last Modified: | 18 Oct 2022 12:27 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/9864 |
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