European Journal of Chemistry

Platinum 1,10-phenanthroline: Photosensitizer for photocatalytic degradation of 4-chlorophenol

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Published: Mar 28, 2011
DOI: https://doi.org/10.5155/eurjchem.2.1.104-108.103
Keywords:
Photosensitizer, 1, 10-phenanthroline, 4-Chlorophenol, Pt-complex, Photodegradation, 1O2
Section
Research Article
Issue
Vol. 2 No. 1 (2011): March 2011
Dates
Received 2010-05-09
Accepted 2010-12-08
Published 2011-03-28


Main Article Content

Ahmed Kadry Aboul-Gheit
Process Development Division, Egyptian Petroleum Research Institute, Nasr City, PO Box 9540, Cairo 11787, Egypt.
Sahar Moustafa Ahmed
Egyptian Petroleum Research Institute, Cairo, EG-11787, Egypt
Doaa Samir El-Desouki
Egyptian Petroleum Research Institute, Cairo, EG-11787, Egypt
Samira Mohamed Abdel-Azeem
Egyptian Petroleum Research Institute, Cairo, EG-11787, Egypt
Mohamed Fathy El-Shahat
Chemistry Department, Faculty of Science, Ain Shams University, Cairo, EG-11787, Egypt

Abstract

It is more economic to apply photodegradation of organic pollutants in presence of the visible light irradiation (sunlight) than applying more costfull ultraviolet lamps. Hence, platinum 1,10-phenanthroline complex has been prepared and tested as a photosensitizer for photodegrading 4-chlorophenol in water, which has been found almost completely achieved (98.5 %) after three hours of visible irradiation. Nevertheless, irradiation at 364 and 254 nm exhibits lower efficiencies. At visible irradiation, the platinum complex gives the highest activation of singlet state oxygen formation (1O2) compared to 364 and 254 nm irradiation as supported by electron para-magnetic resonance data. On the other hand, the behavior of formation and disappearance of photodegradation intermediates: hydroquinone, benzoquinone, hydroxybenzoquinone, using the platinum complex applying the three current irradiations are found to supports these findings. However, organic acids have accumulated as a function of irradiation time and hence considered to be rate-controlling.

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(1)
Aboul-Gheit, A. K.; Ahmed, S. M.; El-Desouki, D. S.; Abdel-Azeem, S. M.; El-Shahat, M. F. Platinum 1,10-Phenanthroline: Photosensitizer for Photocatalytic Degradation of 4-Chlorophenol. Eur. J. Chem. 2011, 2, 104-108.

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