Biocatalytic approach as alternative to chemical synthesis of polyaniline/carbon nanotube composite with enhanced electrochemical properties

A new approach is proposed to biocatalytical synthesis of a thin homogeneous layer of conducting polyaniline (PANI) on the surface of MWCNTs using the laccase Trametes hirsuta . Aniline dimer, an enhancer of laccase-catalyzed aniline polymerization, has been adsorbed on MWCNTs. Phytic acid has been...

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Bibliographic Details
Published in:RSC advances 2016-01, Vol.6 (65), p.6372-6375
Main Authors: Otrokhov, Grigory V, Shumakovich, Galina P, Khlupova, Maria E, Vasil'eva, Irina S, Kaplan, Igor B, Zaitchik, Boris T, Zaitseva, Elena A, Morozova, Olga V, Yaropolov, Alexander I
Format: Article
Language:English
Subjects:
Aniline
Capacitance
Conduction
Core-shell structure
Nanostructure
Polyanilines
Polymerization
Synthesis (chemistry)
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Summary:A new approach is proposed to biocatalytical synthesis of a thin homogeneous layer of conducting polyaniline (PANI) on the surface of MWCNTs using the laccase Trametes hirsuta . Aniline dimer, an enhancer of laccase-catalyzed aniline polymerization, has been adsorbed on MWCNTs. Phytic acid has been used as acidic dopant and gelator. The PANI/MWCNT composite has a core shell structure and shows a high specific capacitance of 554 F g −1 and long-term cycling stability. The approach enables the production of nanostructured composite conducting hydrogel. Preadsorption of aniline dimer on the surface of MWCNTs enabled a composite with better morphology, high conductivity, high specific capacitance and long cycling stability to be fabricated.
ISSN:2046-2069
2046-2069
DOI:10.1039/c6ra12352j