Ultra-fast growth of the monocrystalline zinc oxide nanorods from the aqueous solution. (22nd July 2014)

• Record Type: Journal Article
• Authors: Witkowski, B.S.; Wachnicki, L.; Gierałtowska, S.; Dluzewski, P.; Szczepanska, A.; Kaszewski, J.; Godlewski, M.
• Is Part Of: International journal of nanotechnology. Volume 11:Number 9/10/11(2014)
• Page Start: 758
• Page End: 772
• Publication Date: 2014-07-22
• Subjects: zinc oxide -- hydrothermal method -- nanostructures -- nanorods -- monocrystalline -- growth from the solution.; 620.505
• Languages: English
• ISSNs: 1475-7435

Abstract

A new inexpensive method of the ultra-fast growth of ZnO nanorods from the aqueous solution is described. This environment friendly and fully reproducible method allows growth of nanorods in about 1–3 min time on various substrates, without any catalyst or complexing agent. The substrates need to be coated with a layer of gold droplets, which nucleate the growth. Growth temperature does not exceed 50ºC and growth can be performed at atmospheric pressure. Deionised water and zinc acetate are used as oxygen and zinc precursors, respectively. The method is characterised by simplicity and allows regulating size of the ZnO nanorods in a large extent. Due to simplicity and safety of this method, it is suitable for industrial applications, i.e., in the construction of gas sensors or highly sensitive light detectors (changes of sample resistivity upon illumination).