Fabrication of phthalocyanine-magnetic nanoparticles hybrid nanofibers for degradation of Orange-G

• Conjugates of zinc octacarboxy phthalocyanine with magnetic nanoparticles were electrospun into fibers.
• The fiber was employed for the photodegradation of Orange-G.
• The photodecomposition of Orange-G showed followed the Langmuir–Hinshelwood model.

Conjugates of zinc octacarboxy phthalocyanine (ZnOCPc) with magnetic nanoparticles (MNPs) were electrospun into fibers using polyamide-6 (PA-6) polymer. The ZnOCPc or ZnOCPc-MNPs conjugates on the fiber were employed for the photodegradation of an azo dye (Orange-G). The functionality of the ZnOCPc and ZnOCPc-MNPs was maintained within a solid fiber core. The singlet oxygen generation increases as we increase the fiber diameter by increasing the ZnOCPc concentration. The singlet oxygen quantum yield was higher for PA-6/ZnOCPc-MNPs nanofibers compared to PA-6/ZnOCPc. The rate of degradation of Orange-G increased with an increase in singlet oxygen quantum yield. Moreover, the kinetic analysis of the photodecomposition of Orange-G showed that its disappearance followed the Langmuir–Hinshelwood model.

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