Room temperature synthesis and high temperature frictional study of silver vanadate nanorods
AuthorSingh, D. P.
Aouadi, S. M.
Google Scholar check
MetadataShow full item record
We report the room temperature (RT) synthesis of silver vanadate nanorods (consisting of mainly β-AgVO3) by a simple wet chemical route and their frictional study at high temperatures (HT). The sudden mixing of ammonium vanadate with silver nitrate solution under constant magnetic stirring resulted in a pale yellow coloured precipitate. Structural/microstructural characterization of the precipitate through x-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) revealed the high yield and homogeneous formation of silver vanadate nanorods. The length of the nanorods was 20-40 μm and the thickness 100-600 nm. The pH variation with respect to time was thoroughly studied to understand the formation mechanism of the silver vanadate nanorods. This synthesis process neither demands HT, surfactants nor long reaction time. The silver vanadate nanomaterial showed good lubrication behaviour at HT (700 °C) and the friction coefficient was between 0.2 and 0.3. HT-XRD revealed that AgVO3 completely transformed into silver vanadium oxide (Ag2V 4O11) and silver with an increase in temperature from RT to 700 °C. © 2010 IOP Publishing Ltd.
Showing items related by title, author, creator and subject.
Papageorgiou, C.; Giapintzakis, John; Kyratsi, Theodora (2013)n-Type PbTe compounds were synthesized at temperatures as low as 430 C. After synthesis, the materials were ground, cold pressed and sintered at 600 C. The effect of this low-temperature synthesis on the structural features ...
Broom-like and flower-like heterostructures of silver molybdate through pH controlled self assembly Singh, D. P.; Sirota, B.; Talpatra, S.; Kohli, P.; Rebholz, Claus; Aouadi, S. M. (2012)Silver molybdate microrods are selfassembled into micron sized, broom-like and flowerlike structures. Our investigations indicate that through a simple hydrothermal process, large scale production of such structure is ...
Spanakis, E.; Pervolaraki, M.; Giapintzakis, John; Katsarakis, N.; Koudoumas, E.; Vernardou, D. (2013)•Metallic nanoislands coated on the exterior surface of carbon nanofoam.•Their properties are dependent on the type of the metallic nanoisland.•The gold-associated redox reactions enhance their electrochemical performance.