page_title: Cobalt(II) hydroxide
section_title: Nanotubes
hierarchical_section_title: Cobalt(II) hydroxide / Structure / Nanotubes
caption_attribution_description: Co(OH)2 nanotubes: (a,b, SWNT; c, double-layer nanotube). Spiral structures and tubes can coexist by altering the reaction conditions (d,e). One end of the tube shows a clear transit from a helical structure to a tubular structure by enlarging the area in the red square of (d). Scale bars: (a) 500 nm, inset, 200  nm; (b) 500  nm; (c,e) 50 nm; (d) 100  nm.
context_page_description: Cobalt(II) hydroxide or cobaltous hydroxide is the inorganic compound with the formula Co
  ₂, consisting of divalent cobalt cations Co²⁺
  and hydroxide anions HO⁻
  . The pure compound, often called the "beta form" is a pink solid insoluble in water.
  The name is also applied to a related compound, often called "alpha" or "blue" form, which incorporates other anions in its molecular structure. This compound is blue and rather unstable.
  Cobalt(II) hydroxide is most used as a drying agent for paints, varnishes, and inks, in the preparation of other cobalt compounds, as a catalyst and in the manufacture of battery electrodes.
context_section_description: Cobalt hydroxide can be obtained in the form of nanotubes, which may be of interest in nanotechnology and materials science.
caption: Cobalt hydroxide nanotubes. Scale bars: (a,b) 500 nm, inset 200  nm; (c,e) 50 nm; (d) 100  nm.
exif: {"Image Artist": "", "Image XPAuthor": "[0, 0]", "Thumbnail JPEGInterchangeFormat": "68", "Thumbnail JPEGInterchangeFormatLength": "6442"}