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Herein, we report on the development of an effective, environmentally benign and facile method for visible light driven photo-degradation of Rhodamine 6 G and 2,4-dichlorophenol using Zn-5-p-carboxyphenyl-10,15,20-(tris-4-pyridyl)-porphyrin ( 2 ) linked to graphitic carbon nitride quantum dots (g-C 3 N 4  QDs) and anchored on TiO 2  fibers (represented as  2 @g-C 3 N 4  QDs-TiO 2  fibers). The results suggest that the porphyrin acts as a photosensitizer, g-C 3 N 4  QDs function as both photosensitizer and electron mediator, whereas the TiO 2  fibers supporting matrix is a photocatalyst and a stabilizer. Anchoring  2 @g-C 3 N 4  QDs onto TiO 2  fibers resulted in enhanced catalytic activity and thermal stability. Singlet oxygen ( 1 O 2 ) was the main reactive species responsible for degradation of Rhodamine 6 G and 2,4-dichlorophenol. The degradation kinetic studies follow pseudo first-order kinetics. The results demonstrate  2 @g-C 3 N 4  QDs-TiO 2  fibers ternary hybrid catalyst to be a catalyst for visible light driven photo-degradation of refractory organic water pollutants.

journal of coordination chemistry

Porphyrin-graphitic carbon nitride quantum dots decorated on titanium dioxide electrospun nanofibers for photocatalytic degradation of organic pollutants