Growth mechanism and characterization of ZnO nano-tubes synthesized using the hydrothermal-etching method

✍ Scribed by Yan Li; Chuan-Sheng Liu; Yun-Ling Zou

• Book ID: 111491297
• Publisher: Versita
• Year: 2009
• Tongue: English
• Weight: 586 KB
• Volume: 63
• Category: Article
• ISSN: 0366-6352
• DOI: 10.2478/s11696-009-0082-y

✦ Synopsis

Abstract

ZnO nano-tubes (ZNTs) have been successfully synthesized via a simple hydrothermal-etching method, and characterized by X-ray diffraction, field emission scanning electron microscopy and room temperature photoluminescence measurement. The as-synthesized ZNTs have a diameter of 500 nm, wall thickness of 20–30 nm, and length of 5 µm. Intensity of the plane (0002) diffraction peak, compared with that of plane (10$$ \bar 1 $$0) of ZNTs, is obviously lower than that of ZnO nano-rods. This phenomenon can be caused by the smaller cross section of plane (0002) of the nano-tubes compared with that of other morphologies. On basis of the morphological analysis, the formation process of nano-tubes can be proposed in two stages: hydrothermal growth and reaction etching process.