A simple method to synthesise single-crystalline manganese oxide nanowires

✍ Scribed by Zhong-Yong Yuan; Zaoli Zhang; Gaohui Du; Tie-Zhen Ren; Bao-Lian Su

• Book ID: 104108546
• Publisher: Elsevier Science
• Year: 2003
• Tongue: English
• Weight: 501 KB
• Volume: 378
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/s0009-2614(03)01334-4

✦ Synopsis

Single-crystalline nanowires of hexagonal c-MnO 2 phase have been prepared by a simple method in which the commercial granular c-MnO 2 powders were hydrothermally treated in water or ammonia solution at 120-160 °C. The diameters of the c-MnO 2 nanowires are 5-50 nm and the lengths up to several tens of micrometers. Calcination of c-MnO 2 nanowires at the temperature range of 400-500 °C and above 600 °C results in, respectively, the production of single phases of b-MnO 2 and a-Mn 2 O 3 crystals, while the nanofibrous morphologies persist. These 1-D nanostructured manganese oxides are expected to have possible novel properties and wide applications.