Preparation of Metal Phthalocyanine Supported on Polyvinyl Alcohol Nanofibers and Analysis of Its Dye Degradation Properties

Metal phthalocyanine, a synthetic porphyrin-like compound, has several applications in catalysis. Supported metal phthalocyanine catalysts have attracted increasing attention. In this study, glutaraldehyde (GA) was used for modifying polyvinyl alcohol (PVA) nanofibers by acetalization to improve the water resistance. Subsequently, cobalt tetra(2,4-dichloro-1,3,5-triazine) aminophthalo-cyanine (Co-TDTAPc) was prepared and reacted with OH groups on the surface of the PVA nanofibers to produce Co-TDTAPc-PVA nanofibers. The water resistance test results show that the GA-treated nanofibers demonstrate no significant change in fiber appearance after being soaked in water for 24 h, thus indicating the excellent water resistance of the PVA nanofibers. Moreover, Co-TDTAPc-PVA nanofibers considerably accelerate the degradation of azo fluorescent peach red in the hydrogen peroxide aqueous solution system, and the degradation rate exceeds 98% in 60 min. Furthermore, the nanofibers maintain high catalytic activity after five cycles of tiontesting. These findings indicate that the modified Co-TDTAPc-PVA nanofibers as a navel supported catalyst have a potential application in dye wastewater treatment.