Resumen de Degradación fotocatalítica de fenol y clorofenol empleando TiO2-SO4 = Influencia del ph de síntesis sobre la fotoactividad
Claudia Ramos, Guillermo Sandoval, Rocío C. Antonio Cruz, Ricardo García, Manuel Hernández
Currently, aromatic organic compounds such as phenol and certain of its derivates are present in wastewater from chemical, petrochemical, textile and paper; since it is commonly used as solvents. Such pollutants are difficult to degrade and are highly injurious o health, have a high oral toxicity, dermal and subcutaneous. Hence the need to eliminate this type of compounds using a method that is effective as is the photocatalytic technology, which has many applications, most of them focused on processes related to the environment. Particularly photosensitized degradation with titanium dioxide (TiO2), is well documented in the literature, as well as the strategies employed to improve the efficiency of this technology. In search of a better use of solar light for photocatalysis, have followed different strategies, which include the modification of the specific surface of catalysts, the doped metal ions and the addition of compounds capable of transferring load to the semiconductor. In this research work is reported the preparation of TiO2 photocatalysts, pure, sulfate-doped 5% and 0.5% copper, all prepared by the sol-gel synthesis by changing the pH of 5 and 9. These materials were tested in the photocatalytic degradation of phenol and 4-chlorophenol.
