Enhancement of peroxidase-like activity of N-doped graphene assembled with iron-tetrapyridylporphyrin

The paper describes two preparation methods for the non-covalent functionalization of N-doped graphene with iron( iii )-tetrapyridylporphyrin. The obtained nanomaterials show enhanced peroxidase-like activity compared to N-doped graphene and effectively oxidize 3,3′-dimethylbenzidine with hydrogen p...

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Bibliographic Details
Published in:RSC advances 2016-01, Vol.6 (83), p.79497-7956
Main Authors: Magerusan, L, Socaci, C, Pogacean, F, Rosu, M.-C, Biris, A. R, Coros, M, Turza, A, Floare-Avram, V, Katona, G, Pruneanu, S
Format: Article
Language:English
Subjects:
Catalysis
Catalytic activity
Color
Formations
Graphene
Hydrogen peroxide
Nanomaterials
Spectroscopy
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Summary:The paper describes two preparation methods for the non-covalent functionalization of N-doped graphene with iron( iii )-tetrapyridylporphyrin. The obtained nanomaterials show enhanced peroxidase-like activity compared to N-doped graphene and effectively oxidize 3,3′-dimethylbenzidine with hydrogen peroxide with the formation of a blue product. The catalytic activity and implicitly the color intensity are dependent on the hydrogen peroxide concentration, thus creating the possibility for its quantification by UV-Vis spectroscopy. In addition, the nanomaterial obtained by direct functionalization was investigated for its catalytic ability to remove bisphenol A from pH neutral water solutions. Non-covalently iron-porphyrin functionalized N-doped graphene shows a higher peroxidase-like activity than its building blocks alone.
ISSN:2046-2069
2046-2069
DOI:10.1039/c6ra15414j