TY  - THES
T1  - Growth of anodic self-organized titanium dioxide nanotube layers
A1  - Macák,Jan
Y1  - 2008/06/09
N2  - Synthesis of one dimensional nanostructures has been attracting significant and continually increasing research interest over the past years, as these structures provide a high potential for technological applications due to their intriguing properties. Of particular interest are approaches that rely on a self-organization of the matter, as they provide a high degree of order on the nanoscale and lead to exciting new arrangements. Within electrochemical materials science, anodization approaches that lead to the growth of the self-organized porous structures, such as alumina and silicon, have been widely developed during the past decades. Due to a highly ordered structure and specific properties of these materials, they have found use in various applications. In contrast to these two classical examples, no such ordered nanostructures on titanium could be obtained until recently.  
This thesis describes the synthesis of self-organized titanium dioxide nanotube layers by an electrochemical anodization of Ti in various electrolytes that contain fluoride anions. These layers offer a unique combination of wide band gap semiconductor properties with a high surface area and precisely controlled morphology making them promising candidates for direct applications in photocatalysis and solar energy conversion, for example. In order to determine the conditions for the self-organization, a whole range of parameters was investigated. The conditions that need to be fulfilled to grow ordered layers have been identified within the present work. Further, by aid of modern surface analytical techniques, the mechanistic aspects of the tube growth have also been investigated and discussed. Several functional applications of the nanotube layers are presented and some others are outlined.

KW  - Anodisation, Titandioxid, Selbst-ordnung, Nanoröhren
CY  - Erlangen
PB  - Universitätsbibliothek der Universität Erlangen-Nürnberg
AD  - Universitätsstraße. 4, 91054 Erlangen
L2  - http://www.opus.ub.uni-erlangen.de/opus/volltexte/2008/935
ER  -