Crystal growth of mixed-valence ammonium vanadates

✍ Scribed by Tie-Zhen Ren; Zhong-Yong Yuan; Xiaodong Zou

• Publisher: John Wiley and Sons
• Year: 2007
• Tongue: English
• Weight: 216 KB
• Volume: 42
• Category: Article
• ISSN: 0232-1300
• DOI: 10.1002/crat.200610821

✦ Synopsis

Abstract

A new method has been developed for the synthesis of mixed‐valence ammonium vanadate crystals. Single crystals of (NH~4~)~2~V~3~O~8~ were synthesized on a large scale by hydrothermal reduction of NH~4~VO~3~ in ethanol‐H~2~O solutions in the presence of triblock copolymer Pluronic P123. The crystals are shining thin plates with (001) cleavage planes. Calcination of the (NH~4~)~2~V~3~O~8~ crystals at 300°C or above resulted in pure phases of V~2~O~5~. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)