Antenna Mechanism and De-Aggregation Concept: Novel Mechanistic Principles for Photocatalysis |
| Journal |
Materials Science Forum (Volumes 544 - 545) |
| Volume |
Eco-Materials Processing and Design VIII |
| Edited by |
Hyungsun Kim, Junichi Hojo and Soo Wohn Lee |
| Pages |
17-22 |
| DOI |
10.4028/www.scientific.net/MSF.544-545.17 |
| Online since |
May, 2007 |
| Authors |
Chuan Yi Wang,
Ronald Pagel,
Jürgen K. Dohrmann,
Detlef W. Bahnemann
|
| Abstract |
TiO2 photocatalysis has attracted a great deal of attention during the last three
decades. One major goal in this field is the design and preparation of TiO2 based photocatalysts
possessing high photocatalytic activity to satisfy the requirements for practical applications. For the
development of successful strategies to achieve this goal it is of utmost importance to improve the
mechanistic understanding of the basic principles of photocatalysis. Therefore, various nanosized
TiO2 photocatalysts including pure TiO2, Fe(III)-doped TiO2 and platinized TiO2 have been
synthesized in our laboratories and their photocatalytic activity has been studied in detail. In
particular, the correlation between the structural characteristics of these newly synthesized catalysts
and their photocatalytic activity has been addressed. To explain the unexpected behavior of these
materials novel mechanistic principles, i.e., the antenna mechanism and the so-called deaggregation
concept have been developed and will be explained in this review. |
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