Comparative efficiency of immobilized non-transition metal phthalocyanine photosensitizers for the visible light transformation of chlorophenols
作者： Bolade Agboola , Kenneth I Ozoemena , Tebello Nyokong , None
DOI: 10.1016/J.MOLCATA.2005.12.009
关键词: Aqueous solution 、 Phthalocyanine 、 Photosensitizer 、 Amberlite 、 Chemistry 、 Chlorophenol 、 Transition metal 、 Singlet oxygen 、 Photochemistry 、 Photocatalysis
摘要: Abstract Photolysis of aqueous solutions chlorophenols (4-chlorophenol, 2,4-dichlorophenol, 2,4,5-trichlorophenol and pentachlorophenol) in the presence immobilized non-transition metal phthalocyanine photosensitizers onto Amberlite ® is presented. The studied are: Al (AlOCPc) Zn (ZnOCPc) octacarboxyphthalocyanines; (AlPcS 4 ) (ZnPcS tetrasulfophthalocyanines; sulfonated complexes (containing mixtures differently substituted derivatives) mix ), Ge (GePcS Si (SiPcS Sn (SnPcS ). resulted mainly formation chlorobenzoquinone derivatives. showed order activity towards transformation pentachlorophenol as follows: ZnOCPc > SiPcS > SnPcS > ZnPcS > GePcS > AlPcS > AlOCPc > AlPcS . generation singlet oxygen ( 1 O 2 by these MPc was found to play a major role their photoactivities chlorophenols. Langmuir–Hinshelwood (L–H) kinetic model studies that ZnOCPc, GePcS ZnPcS photocatalysis occurred on catalysts surface.
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