Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/83744
Title: Formation of α-Fe2O3 nanoflakes by heating Fe in air
Authors: Yu, T. 
Sow, C.H. 
Xu, X.J. 
Zhu, Y.W. 
Lim, C.T. 
Thong, J.T.L. 
Keywords: Hematite
Hot-plate
Nanoflakes
Issue Date: 2007
Source: Yu, T.,Sow, C.H.,Xu, X.J.,Zhu, Y.W.,Lim, C.T.,Thong, J.T.L. (2007). Formation of α-Fe2O3 nanoflakes by heating Fe in air. Diffusion and Defect Data Pt.B: Solid State Phenomena 121-123 (PART 1) : 45-48. ScholarBank@NUS Repository.
Abstract: Flake-shaped hematite (α-Fe2O3) nanostructure has been successfully fabricated by using a hot-plate to directly heat Fe foil or Fe-coated substrates in air at 300°C. After heating, the surface of the samples was found to be populated with α-Fe2O3 nanoflakes. Such growth of α-Fe2O3 nanoflakes was very substrate-friendly. They can be formed on blank Si wafer, patterened Si, AFM tips, silica sphere, quartz, glass slide, Al foil and electrochemically etched W tip. The formation process and the final products were investigated by glancing angle x-ray diffraction (GAXRD), micro-Raman, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results indicate the final products are single crystalline α-Fe2O 3 nanoflakes vertically standing on the Fe3O4 film that acts as the precursor for growth of α-Fe2O 3. The α-Fe2O3 nanoflakes formed by this method show very sharp tip with the tip radii as small as several nanometers and large surface to volume ratio. Such nanoflakes may be potentially useful as novel candidates for future electron field emission and gas senor devices. Furthermore, it is believed that this simple and substrates-friendly method is useful in extending the applications of α-Fe2O3 nanostructures.
Source Title: Diffusion and Defect Data Pt.B: Solid State Phenomena
URI: http://scholarbank.nus.edu.sg/handle/10635/83744
ISBN: 3908451302
ISSN: 10120394
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

30
checked on Apr 20, 2018

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.