Reactivity and Structural Properties of a Mechanochemically Treated Ag2O–V2O5 System in Relation to AgVO3 Polymorphs

✍ Scribed by Shigeharu Kittaka; Sachie Nishida; T. Iwashita; Tsukio Ohtani

• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 294 KB
• Volume: 164
• Category: Article
• ISSN: 0022-4596
• DOI: 10.1006/jssc.2001.9461

✦ Synopsis

Formation and chemical properties of amorphous AgVO 3 , which was prepared by mechanochemical treatment of an Ag 2 O+V 2 O 5 mixture, and crystalline AgVO 3 were studied in relation to AgVO 3 polymorphs. A ball-milled sample of the mixture was assigned as a highly deformed -AgVO 3 rather than the low density phase -AgVO 3 . Crystalline -AgVO 3 and -AgVO 3 were converted into deformed -AgVO 3 by ball milling, which produced a clear change. -AgVO 3 is resistant to mechanical treatment and its structure was not markedly a4ected. The dissolved chemical species from the ball-milled sample precipitates to form -AgVO 3 without a seeding crystal, but other polymorphs deposit if they are present; i.e., -AgVO 3 and -AgVO 3 grow on the seeding crystal.

2002 Elsevier Science (USA)