Cyanate intercalation in nickel hydroxide

Mavis B., Akinc M.

CHEMISTRY OF MATERIALS, vol.18, no.22, pp.5317-5325, 2006 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 18 Issue: 22
  • Publication Date: 2006
  • Doi Number: 10.1021/cm0528835
  • Journal Name: CHEMISTRY OF MATERIALS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.5317-5325
  • Hacettepe University Affiliated: No

Abstract

alpha-Ni(OH)(2) and Ni-Al layer double hydroxides (LDHs) precipitated by urea were investigated with FTIR and XPS. Possible modes of cyanate (CNO-) coordination during the nucleation and growth of precipitates is discussed. In the early stages, cyanate ion in R-Ni(OH)(2) is found mainly to be N-bonded to Ni2+ ions in the layers, whereas later in the growth stages, it is bonded through oxygen. In LDHs cyanate remains N-bonded. These changes in the coordinations modes are related to the decreasing supersaturation levels during digestion. XPS results support the FTIR results.