Hydrothermal synthesis of submicron SnO crystallites
Journal
Journal of Materials Research
Journal Volume
15
Journal Issue
7
Pages
1445-1448
Date Issued
2000
Author(s)
Abstract
SnO crystallites having a size ranging 0.1-0.2 μm were synthesized by a hydrothermal process, which consisted of prolonged solution aging under pH = 1.0, followed by hydrothermal treatment under pH = 9 to 10 at 75-95 °C. Oxidation of Sn+2 to Sn+4 during the hydrothermal stage was effectively inhibited by increasing the solution-aging time. This was attributed to the formation, upon aging, of polymeric hydrous SnO colloids, which are more oxidation resistant than aquo-hydroxo tin complex monomers. For solutions with a sufficiently long (≥240 h) aging time, the SnO yield increased with increasing pH and temperature during the hydrothermal treatment.
SDGs
Type
journal article