The application of ferrous and graphitic N modified graphene-based composite cathode material in the bio-electro-Fenton system driven by sediment microbial fuel cells to degrade methyl orange.

ABSTRACT: In this work, the ferrous (Fe²⁺) and graphitic N modified graphene-based composite cathode materials (N-rGO/Fe₃O₄) were developed through an in-situ reduction method, aiming to facilitate the two-electron pathway in the oxidation-reduction process. This approach generated a specific concentration of H₂O₂, enabling the construction of a sediment bio-electro-Fenton system using Fe²⁺ released from the cathode materials. Notably, this system operates without the need for proton exchange membranes. During the cathode material preparation, the utilization of Fe²⁺ as a reduction agent for graphene oxide (GO), triggered ammonia water to form graphitic N in graphene sheets. This addition enhanced the two-electron pathway,

SUBMITTER: Sun M 

PROVIDER: S-EPMC10850425 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature