Photodegradation of photodynamic therapy agents in aqueous TiO2 suspensions

0Citations
Citations of this article
10Readers
Mendeley users who have this article in their library.

Abstract

The presence of emergent pollutants in waters and wastewaters are an issue of increasing concern due to the risk they pose to human and environmental health. Cancer Photodynamic Therapy photosensitizers and their metabolites and photodegradation products are pharmaceutical substances that after treatment will be eliminated from the human body and will eventually reach water bodies. Porphyrins are well established PDT sensitizers and cyanine dyes are promising candidates for the same use. In that way it is important to know how those compounds degrade once they reach water bodies and to find efficient treatment methodologies in case they are persistent. In this paper the simulated solar light photodegradation of a porphyrin (Zinctetraphenylporphyrin) and of a cyanine dye (3,3́-diethylindocarbocyanine iodide) in water was investigated, in the absence and in the presence of the most used photocatalyst for semiconductor photocatalysis: Titanium dioxide (TiO2). We observed that the porphyrin (1x10-3M) did not undergo photodegradation in the absence of photocatalyst and that in its presence the photodegradation process was strongly promoted (60% photodegradation reached after 1 hour of irradiation with 0,01g of TiO2). The cyanine dye (1x10-3M) suffered a photodegradation of about 20% even in the absence of TiO2 and reached 100% photodegradation in its presence. © 2013 WIT Press.

References Powered by Scopus

Electrochemical photolysis of water at a semiconductor electrode

30406Citations
N/AReaders
Get full text

Fate of antibiotics during municipal water recycling treatment processes

670Citations
N/AReaders
Get full text

Synthetic endocrine disruptors in the environment and water remediation by advanced oxidation processes

252Citations
N/AReaders
Get full text

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Cite

CITATION STYLE

APA

Oliveira, A. S., Maia, C. G., Brito, P., Boscencu, R., Socoteanu, R., Ilie, M., & Ferreira, L. F. V. (2013). Photodegradation of photodynamic therapy agents in aqueous TiO2 suspensions. WIT Transactions on Ecology and the Environment, 173, 719–728. https://doi.org/10.2495/SDP130601

Readers over time

‘15‘16‘17‘18‘20‘22‘2400.511.52

Readers' Seniority

Tooltip

PhD / Post grad / Masters / Doc 4

57%

Researcher 2

29%

Lecturer / Post doc 1

14%

Readers' Discipline

Tooltip

Chemistry 2

33%

Environmental Science 2

33%

Chemical Engineering 1

17%

Pharmacology, Toxicology and Pharmaceut... 1

17%

Save time finding and organizing research with Mendeley

Sign up for free
0