Journal
CATALYSTS
Volume 12, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/catal12070752
Keywords
iron phthalocyanine; graphitic carbon nitride; covalent modification; photocatalytic reduction; nitroaromatic compounds
Categories
Funding
- Zhejiang Provincial Natural Science Foundation of China [LY20B070001]
Ask authors/readers for more resources
In this study, a visible-light-driven hybrid photocatalyst was synthesized by doping Fe phthalocyanine (FePc) into graphitic carbon nitride skeleton, which showed enhanced absorption and improved photogenerated charge transfer and separation. The photocatalyst exhibited efficient degradation of nitroaromatic compounds with high stability and good reusability.
It is of great urgency to eliminate nitroaromatic compounds (NACs) in wastewater due to their high residue and toxicity. Photocatalysis reduction is considered to be an efficient technology for converting NACs to their corresponding aromatic amines. In this work, a visible-light-driven hybrid photocatalyst was synthesized by covalently doping Fe phthalocyanine (FePc) into graphitic carbon nitride skeleton. Compared to the pristine gCN, the optimized gCN-FePc-1 photocatalyst showed enhanced absorption in visible light region, which promoted photogenerated charge transfer and separation. Using p-nitrophenol (p-NP) as the model pollutant, the CN-FePc-1 effectively reduced it to p-aminophenol (p-AP), with the photocatalytic reaction rate being 18 and 3 times higher, respectively, than those of the pristine gCN and the mechanically mixed photocatalyst of gCN/FePc. Moreover, excellent photocatalytic universality for other NACs, high stability, and good reusability also were confirmed. Based on the band structure of the gCN-FePc-1 photocatalyst, a plausible mechanism was proposed to illustrate the photocatalytic reduction process of p-NP to p-AP. This study demonstrates that the covalent modification of FePc into gCN skeleton is an effective strategy to modulate the electronic structure, and the hybrid gCN-FePc is a potential visible-light-driven photocatalyst that potentially can be used for eliminating NAC contamination in wastewater.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available