Abstract
Metal phthalocyanine (MPc) sensitized TiO2 represents a promising strategy for solar energy applications, but the MPc/TiO2 heterostructures still suffer from low MPc loading and limited photocatalytic efficiency for water purification. Here we simultaneously alleviate these constraints by anchoring iron phthalocyanine (FePc)/TiO2 heterostructure onto an amidoximated polyacrylonitrile (PAN) fiber through coordination bonds. The fibrous ligands enabled high FePc loading without obvious aggregation, and an optimal FePc/TiO2 ratio with 10.2% was obtained to give the best photocatalytic activity for organic contaminants degradation. The fibrous support not only offered more efficient electron injection process from FePc to TiO2, but also enhanced the adsorption capability towards organic contaminants and boosted the activation of photoinduced H2O2 by FePc. These synergistic qualities result in over 30-fold higher reaction kinetics at the fibrous interface versus a corresponding system with FePc/TiO2 powder catalysts. Our findings should be not limited to the current heterostructures and might provide a facile and promising path for the development of efficient composite photocatalysts with high performance.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call