Enhancement of photocatalytic degradation of poly(vinyl chloride) with perchlorinated iron (II) phthalocyanine modified nano‐TiO₂

Abstract

A novel photodegradable thin film of poly(vinyl chloride) (PVC) composite was prepared by embedding modified TiO 2 nanoparticles into the commercial PVC. The photocatalyst nanoparticles were modified with perchlorinated iron (II) phthalocyanine (FePcCl 16 ) to improve their photocatalytic activity. Solid-phase photocatalytic degradation of the PVC-FePcCl 16 -TiO 2 thin film was carried out under ultraviolet (UV) lamp or sunlight irradiation in atmosphere. The properties of composite films were compared with those of pure PVC film and poly(vinyl chloride)-TiO 2 (PVC-TiO 2 ) composite films through performing weight loss monitoring, scanning electron microscope and Fourier-transform infrared spectroscopy. The results indicated that the degradation efficiency of PVC-FePcCl 16 -TiO 2 composite film was significantly higher than that of pure PVC film and PVCTiO 2 composite film under UV or sunlight irradiation. The photocatalytic degradation mechanism was discussed briefly.

Research on Biodegradable Films and Their Comparison with Ordinary Films

“…These free radicals can cause polymer molecular chain fracture and decomposition, and ultimately the plastic into carbon dioxide and water and other substances, to achieve the purpose of degradation. In addition, the titanium dioxide also has a strong stability, non-toxic and so on, so titanium dioxide as the preparation of photodegradable plastics preferred catalyst [17][18][19][20] . In recent years, photodegradable plastics prepared with titanium dioxide as photocatalyst have attracted much attention of researchers.…”

Large stabilizing effect of titanium dioxide on photodegradation of PVC/α‐methylstyrene‐acrylonitrile copolymer/impact modifier‐matrix composites

“…Sokhandani et al found that addition of TiO 2 nanorods could reinforce PVC and improve its UV resistance simultaneously. Other studies related to the surface modification of TiO 2 , and using TiO 2 (rutile type) in the PVC‐based wood‐plastics composites are also reported . However, no reports are available with regard to PVC/α‐MSAN/impact modifier/TiO 2 composites, according to our knowledge.…”

“…Several studies related to the PVC/TiO 2 composites have been reported [16][17][18][19][20][21][22][23][24][25]. On the one hand, for accelerating the photodegradation of PVC via adding TiO 2 , Hidaka et al [19,20] investigated photocatalytic degradation of PVC in aqueous TiO 2 suspension or TiO 2 blended film in water.…”

Hybrid nanocomposites with enhanced visible light photocatalytic ability for next generation of clean energy systems

“…Further, photocatalysis efficiency of the heteroatoms modified semiconductor materials may not be significantly improved when compared to their starting counterpart. [19] Complementary, p-n junctions have been created in semiconductor nanomaterials such as molybdenum disulfide (MoS2)/ nitrogen-doped reduced graphene oxide (n-rGO) [20] or nickel oxide (NiO)/ titanium dioxide (TiO2) [21] to optimize photocatalytic activity, [22] while semiconductor nanoparticles-based surface heterostructures have been implemented to enhance separation of photogenerated carriers. [23][24][25] The resulting heterostructure interface was used to cage photoinduced electrons and consequently separate generated electron-hole pairs.…”