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Multi-walled carbon nanotube and carbide-derived carbon supported metal phthalocyanines as cathode catalysts for microbial fuel cell applications

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Abstract

Herein, iron phthalocyanine (FePc) and cobalt phthalocyanine (CoPc) were used to impregnate nitrogen and corresponding transition metals into the multi-walled carbon nanotubes (MWCNTs) or carbide-derived carbon (CDC) to compare the prepared highly efficient oxygen reduction reaction (ORR) catalysts for application in microbial fuel cells (MFCs). The results revealed that among all the catalysts investigated, FePc/MWCNT and FePc/CDC showed superior ORR activity, as determined by the rotating disk electrode (RDE) method under neutral pH. Moreover, the performance of MFC with FePc/CDC was comparable with that of MFC with Pt as a cathode catalyst in terms of power density (ca. 8.3 W m−3 vs. 8.8 W m−3) and coulombic efficiency (16.9 ± 0.7% vs. 17.4 ± 0.7%). Hence, it can be concluded that FePc/CDC can be used as a low-cost alternative to expensive Pt-based cathode catalysts for the ORR in MFCs to make this technology effective for field scale applications.

Graphical abstract: Multi-walled carbon nanotube and carbide-derived carbon supported metal phthalocyanines as cathode catalysts for microbial fuel cell applications

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Publication details

The article was received on 29 Jul 2019, accepted on 01 Oct 2019 and first published on 02 Oct 2019


Article type: Paper
DOI: 10.1039/C9SE00574A
Sustainable Energy Fuels, 2019, Advance Article

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    Multi-walled carbon nanotube and carbide-derived carbon supported metal phthalocyanines as cathode catalysts for microbial fuel cell applications

    G. D. Bhowmick, E. Kibena-Põldsepp, L. Matisen, M. Merisalu, M. Kook, M. Käärik, J. Leis, V. Sammelselg, M. M. Ghangrekar and K. Tammeveski, Sustainable Energy Fuels, 2019, Advance Article , DOI: 10.1039/C9SE00574A

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