Ali Umar, Akrajas and Abd Rahman, Mohd Yusri and Taslim, Rika and Mat Salleh, Muhamad and Oyama, Munetaka (2011) A simple route to vertical array of quasi-1D ZnO nanofilms on FTO surfaces: 1D-crystal growth of nanoseeds under ammonia-assisted hydrolysis process. NANOSCALE RESEARCH LETTERS, 6 (1). pp. 1-12. ISSN 1931-7573 (Print) 1556-276X (Online)
Full text is not hosted in this archive but may be available via the Official URL, or by requesting a copy from the corresponding author.
Official URL: http://www.nanoscalereslett.com/content/6/1/564
A simple method for the synthesis of ZnO nanofilms composed of vertical array of quasi-1D ZnO nanostructures (quasi-NRs) on the surface was demonstrated via a 1D crystal growth of the attached nanoseeds under a rapid hydrolysis process of zinc salts in the presence of ammonia at room temperature. In a typical procedure, by simply controlling the concentration of zinc acetate and ammonia in the reaction, a high density of vertically oriented nanorod-like morphology could be successfully obtained in a relatively short growth period (approximately 4 to 5 min) and at a room-temperature process. The average diameter and the length of the nanostructures are approximately 30 and 110 nm, respectively. The as-prepared quasi-NRs products were pure ZnO phase in nature without the presence of any zinc complexes as confirmed by the XRD characterisation. Room-temperature optical absorption spectroscopy exhibits the presence of two separate excitonic characters inferring that the as-prepared ZnO quasi-NRs are high-crystallinity properties in nature. The mechanism of growth for the ZnO quasi-NRs will be proposed. Due to their simplicity, the method should become a potential alternative for a rapid and cost-effective preparation of high-quality ZnO quasi-NRs nanofilms for use in photovoltaic or photocatalytics applications.
|Subjects:||Material Science > Nanofabrication processes and tools|
Material Science > Nanochemistry
|Deposited By:||M T V|
|Deposited On:||05 Jan 2012 09:26|
|Last Modified:||05 Jan 2012 09:26|
Repository Staff Only: item control page