Photocatalysis of 4-nitrophenol using zinc phthalocyanine complexes

  • Marais E
  • Klein R
  • Antunes E
 et al. 
  • 31

    Readers

    Mendeley users who have this article in their library.
  • 67

    Citations

    Citations of this article.

Abstract

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. ZnPcSmixis the most effective catalyst in terms of a high quantum yield for 4-Np degradation and the stability of the catalyst. However ZnPc(COOH)8degrades 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-Npvalues were closely related to the singlet oxygen quantum yields ΦΔand hence aggregation. The rate constants for the reaction with 4-Np were kr= 0.67 × 106mol-1dm3s-1for ZnPcSmixand 2.8 × 108mol-1dm3s-1for ZnPc(COOH)8. © 2006 Elsevier B.V. All rights reserved.

Author-supplied keywords

  • Aggregation
  • Nitrophenol
  • Photocatalysis
  • Phthalocyanine
  • Quantum yields

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Authors

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free