"Amorphous Nickel Sulfide" Is Hydrated Nanocrystalline NiS with a Core-Shell Structure - ePrints Ava Hudson | March 26, 2026 "Amorphous Nickel Sulfide" Is Hydrated Nanocrystalline NiS with a Core-Shell StructureLookup NU author(s): Dr Elisa Lopez-Capel,Professor David ManningORCiDDownloadsFull text for this publication is not currently held within this repository. Alternative links are provided below where available.AbstractThe application of a range of experimental techniques shows that "amorphous nickel sulfide" (the material precipitated from aqueous solutions of Ni-II salts and SII- under ambient conditions) is actually a hydrated nanoparticulate material with an approximate formula NiS center dot 1.5H(2)O. 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.Publication metadataAuthor(s): Huang SS, Harris KDM, Lopez-Capel E, Manning DAC, Rickard DPublication type: ArticlePublication status: PublishedJournal: Inorganic Chemistry Year: 2009Volume: 48Issue: 24Pages: 11486-11488ISSN (print): 0020-1669 ISSN (electronic): 1520-510X Publisher: American Chemical SocietyURL: DOI: 10.1021/ic901512zAltmetricsShare
