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RSC Advances
RSC Advances
ARTICLE
T. Wang, P. Guo and X. Zhou
12846.
5
6
Conclusions
,
RSC ADdOvI.:,102.10013V3i9e,/wC3A5r,RticA1l1e29O87n43l2i9nBe-
The metal complexes of 5,10,15,20-tetrakis(2,6-difluoro-5-N-
methylsulfamylophenyl)porphyrin were
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prepared and
3
characterized. The results of these studies show that some of
these metal complexes can be considered as efficient
photosensitizers for singlet oxygen generation and as
photocatalysts for degradation of organic pollutants, both in
solution and as a part of heterogeneous photocatalysts.
5
7
8
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2
A. Jaoczyk, E. Krakowska, G. Stochel and W. Macyk, J. Am.
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G. Lente and J. H. Espenson, Chem. Commun., 2003, 1162–
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The zinc porphyrin derivative, ZnF2PMet, is characterized by a
high yield of singlet oxygen formation in solution ( = 0.99),
and in this system the most reasonable mechanism of
phototacalytic activation involves the energy transfer from the
excited state of the photosensitizer (triplet state) to oxygen
molecule. The significant photocurrent generation and the
high photogeneration of hydroxyterephthalic acid from
terephthalic acid in the illumination of ZnF2PMet@TiO2 with
visible light, point at an additional role played by hydroxyl
radicals in photocatalytic activity of ZnF2PMet@TiO2. The
process of sensitization in hybrid materials may additionally
involve the electron transfer from the dye to the conduction
band of titanium dioxide. Examination of the photocatalytic
activity of the composite materials on the pharmaceutical
tramadol hydrochloride and a model organic pollutant (4-CP)
10 J. Mosinger and Z. Micka, J. Photochem. Photobiol. A: Chem.
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18 M. M. Pereira, C. J. P. Monteiro, A. V. C. Simões, S. M. A.
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with visible light showed
a superior performance of
ZnF2PMet@TiO2 over the standard TiO2 (P25). The relatively
good photostability and photoactivity of ZnF2PMet@TiO2
material may enable its practical applications, including not
only photochemistry and photocatalysis but also
photomedicine e.g. photodynamic therapy (PDT) or
photoinactivation of microorganisms and bacterial cells.
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Acknowledgements
This work was founded by the Ministry of Science and Higher
Education, Poland, within the Iuventus Plus program, grant
number 0085/IP3/2015/73 given to JMD. We also thank
National Science Centre for the support (grant number
2012/05/BST5/00389). WM is indebted to the Ministry of
Science and Higher Education for the support within the Ideas
Plus project, grant No. IdP2012000362.
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RSC Adv., 2015, 00, 1-3 | 9
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