Photodegradation of 4-nitrophenol (4-Np) in the presence of zinc tetrasulfophthalocyanine (ZnPcS4), zinc octacarboxyphthalocyanine (ZnPc(COOH)8) and a sulfonated ZnPc containing a mixture of differently sulfonated derivatives (ZnPcSmix), as photocatalysts is reported. ZnPcSmix is the most effective catalyst in terms of a high quantum yield for 4-Np degradation and the stability of the catalyst. However ZnPc(COOH)8 degrades readily during the catalysis, but it has a higher quantum yield (Φ4-Np) for 4-Np degradation than the rest of the complexes. The Φ4-Np values were closely related to the singlet oxygen quantum yields ΦΔ and hence aggregation. The rate constants for the reaction with 4-Np were kr = 0.67 × 106 mol-1 dm3 s-1 for ZnPcSmix and 2.8 × 108 mol-1 dm3 s-1 for ZnPc(COOH)8. © 2006 Elsevier B.V. All rights reserved.
CITATION STYLE
Marais, E., Klein, R., Antunes, E., & Nyokong, T. (2007). Photocatalysis of 4-nitrophenol using zinc phthalocyanine complexes. Journal of Molecular Catalysis A: Chemical, 261(1), 36–42. https://doi.org/10.1016/j.molcata.2006.07.055
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