Details
| Original language | English |
|---|---|
| Number of pages | 22 |
| Edition | 14 |
| ISBN (electronic) | 9781782620419, 9781782622932, 9781782627098 |
| Publication status | Published - 2016 |
Publication series
| Name | RSC Energy and Environment Series |
|---|---|
| No. | 14 |
| Volume | 2016-January |
| ISSN (Print) | 2044-0774 |
| ISSN (electronic) | 2044-0782 |
Abstract
Much effort has been devoted to the understanding of the fundamental and the engineering aspects of semiconductor photocatalysis with the goal of improving its efficiency. Remarkably, the quantum yields of the photocatalytic reactions are still very low. On the one hand, all charge carriers generated upon light absorption have to escape recombination and reach the semiconductor surface. Here they are either trapped or directly transferred to preadsorbed substrate molecules. Finally, a diffusion controlled charge transfer process to suitable reductants or oxidants needs to compete with the surface recombination processes of the trapped charge carriers. Since, on the other hand, many one-electron transfer steps are required to fully oxidize organic substrates into CO 2, various chemical intermediates will be formed that subsequently need to be oxidized before leaving the photocatalyst surface. Otherwise, undesired products can be generated in such complex photocatalytic reactions, making control of the overall processes very difficult.
ASJC Scopus subject areas
- Environmental Science(all)
- Global and Planetary Change
- Environmental Science(all)
- Environmental Chemistry
- Energy(all)
- General Energy
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14 ed. 2016. 22 p. (RSC Energy and Environment Series; Vol. 2016-January, No. 14).
Research output: Book/Report › Monograph › Research › peer review
}
TY - BOOK
T1 - Understanding the chemistry of photocatalytic processes
AU - Hakki, A.
AU - Schneider, J.
AU - Bahnemann, D.
N1 - Publisher Copyright: © 2016 The Royal Society of Chemistry. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2016
Y1 - 2016
N2 - Much effort has been devoted to the understanding of the fundamental and the engineering aspects of semiconductor photocatalysis with the goal of improving its efficiency. Remarkably, the quantum yields of the photocatalytic reactions are still very low. On the one hand, all charge carriers generated upon light absorption have to escape recombination and reach the semiconductor surface. Here they are either trapped or directly transferred to preadsorbed substrate molecules. Finally, a diffusion controlled charge transfer process to suitable reductants or oxidants needs to compete with the surface recombination processes of the trapped charge carriers. Since, on the other hand, many one-electron transfer steps are required to fully oxidize organic substrates into CO 2, various chemical intermediates will be formed that subsequently need to be oxidized before leaving the photocatalyst surface. Otherwise, undesired products can be generated in such complex photocatalytic reactions, making control of the overall processes very difficult.
AB - Much effort has been devoted to the understanding of the fundamental and the engineering aspects of semiconductor photocatalysis with the goal of improving its efficiency. Remarkably, the quantum yields of the photocatalytic reactions are still very low. On the one hand, all charge carriers generated upon light absorption have to escape recombination and reach the semiconductor surface. Here they are either trapped or directly transferred to preadsorbed substrate molecules. Finally, a diffusion controlled charge transfer process to suitable reductants or oxidants needs to compete with the surface recombination processes of the trapped charge carriers. Since, on the other hand, many one-electron transfer steps are required to fully oxidize organic substrates into CO 2, various chemical intermediates will be formed that subsequently need to be oxidized before leaving the photocatalyst surface. Otherwise, undesired products can be generated in such complex photocatalytic reactions, making control of the overall processes very difficult.
UR - http://www.scopus.com/inward/record.url?scp=84974695753&partnerID=8YFLogxK
U2 - 10.1039/9781782622338-00029
DO - 10.1039/9781782622338-00029
M3 - Monograph
T3 - RSC Energy and Environment Series
BT - Understanding the chemistry of photocatalytic processes
ER -