Hostname: page-component-78c5997874-ndw9j Total loading time: 0 Render date: 2024-11-06T11:49:27.314Z Has data issue: false hasContentIssue false

Self-Assembling Of Ordered Mesoporous Titania Nanostructures

Published online by Cambridge University Press:  02 July 2020

J.S. Yin
Affiliation:
School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA30332.
Z.L. Wang
Affiliation:
School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA30332.
Get access

Extract

Ordered self-assembly of nanocrystals is scientifically interesting due to not only the unique properties of the nanocrystals, but also the collective properties of the assembly. Compared to lithography method, self-assembly is limited by a lack of control over the sizes of the ordered arrays, resulting in difficulties in characterizing their physical and chemical properties. New techniques are needed to manipulate the self-assembling process and the nanostructures formed.

In this work, polystyrene (PS) spheres were used as the template to form large bulk ordered anatase nanostructure with cobalt doping. The ordered PS template was infiltrated with absolute alcohol solution of titanium butoxide. After the precursor was dried, it was treated at 160°C for 5 hours and then at 450°C for another 5 hours. To dope cobalt into the structure, the porous titania host was immersed in a heptane solution with cobalt carbonyl. After drying in vacuum at room temperature, it was treated at 160°C.

Type
High Resolution Electron Microscopy
Copyright
Copyright © Microscopy Society of America

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1.Yin, J.S. and Wang, Z.L., Adv. Mater., 1999, in press.Google Scholar
2.Wijnhoven, J.E.G.J., etal, Science, 281 (1998) 802; Holland, B.T., etal, Science, 281 (1998) 538.CrossRefGoogle Scholar
3.Galasso, F.S., Structure and Properties of Inorganic Solids, Pergamon Press (1970) 222.Google Scholar
4.Thanks to NSF DMR-9733160 for support.Google Scholar