mecanismo de fotodegradação de compostos orgânicos catalisada por tio2 mechanism reactions of photodegradation of organic compounds catalyzed by tio2
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mecanismo de fotodegradação de compostos orgânicos catalisada por tio2 mechanism reactions of photodegradation of organic compounds catalyzed by tio2

;Roberta Lourenço Ziolli;Wilson F. Jardim
greece and rome 1998 Vol. 21 pp. 319-325
153
ziolli1998qumicamecanismo

Abstract

Conventional technology used in the treatment of wastewater has been pointed as a major environmental problem for sustainable development, since minimization is not addressed accordingly. Advanced oxidation processes (AOP), based on the formation of hydroxyl radical (•OH), a powerful oxidant agent, have been considered to be a potential technology for the destruction of many toxic compounds. Photocatalysis using solar light, an AOP, has been studied for nearly 20 years and recently attracted great interest as a clean-up technology. However, solar detoxification processes have not yet achieved commercial success. This article presents an overview of reaction mechanisms at the surface of semiconductors used as photocatalysts (specially TiO2), when heterogeneous photocatalysis is used to remove hazardous compounds from contaminated sites.

Keywords

hydroxyl radical

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DOI:
10.1590/S0100-40421998000300013
URL:
http://www.scielo.br/scielo.php?script=sci_arttext...

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ID: 138839
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