Microwave-Assisted Synthesis of Reduced Graphene Oxide/SnO2 Nanocomposite for Oxygen Reduction Reaction in Microbial Fuel Cells

ACS Applied Materials & Interfaces
Nadia GarinoMarzia Quaglio

Abstract

We report on an easy, fast, eco-friendly, and reliable method for the synthesis of reduced graphene oxide/SnO2 nanocomposite as cathode material for application in microbial fuel cells (MFCs). The material was prepared starting from graphene oxide that has been reduced to graphene during the hydrothermal synthesis of the nanocomposite, carried out in a microwave system. Structural and morphological characterizations evidenced the formation of nanocomposite sheets, with SnO2 crystals of few nanometers integrated in the graphene matrix. Physico-chemical analysis revealed the formation of SnO2 nanoparticles, as well as the functionalization of the graphene by the presence of nitrogen atoms. Electrochemical characterizations put in evidence the ability of such composite to exploit a cocatalysis mechanism for the oxygen reduction reaction, provided by the presence of both SnO2 and nitrogen. In addition, the novel composite catalyst was successfully employed as cathode in seawater-based MFCs, giving electrical performances comparable to those of reference devices employing Pt as catalyst.

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Citations

Dec 29, 2016·International Journal of Molecular Sciences·Sandesh Y SawantMoo Hwan Cho
Jul 5, 2016·Scientific Reports·Tonia TommasiMarzia Quaglio
Feb 14, 2018·Nanomaterials·Adriana Ibarra-HernándezVelia Osuna
Feb 10, 2018·Journal of Drug Targeting·Asadullah MadniMuhammad Imran Khan
Nov 15, 2018·Dalton Transactions : an International Journal of Inorganic Chemistry·Shanmugam MahalingamYoung-Ho Ahn
Aug 3, 2020·Environmental Science and Pollution Research International·Rana Tajdid KhajehSirous Ebrahimi
Dec 2, 2020·Materials Science & Engineering. C, Materials for Biological Applications·Prasanta PattanayakPatit Paban Kundu
Nov 19, 2019·The Journal of Physical Chemistry Letters·Federico RaffoneGiancarlo Cicero

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