High-performance anode material based on S and N co-doped graphene/iron carbide nanocomposite for microbial fuel cells

Carbonaceous Anodes and Compatible Exoelectrogens in High-Performance Microbial Fuel Cells: A Review

“…Typically, GO is synthesized by the reaction of graphite with strong acids or bases and then dispersed under ultrasonication, which is cost-effective and thus widely used. Because of its inherent advantages in conductivity and stability, a large number of studies further explored several modification strategies on graphene oxide to improve the properties of redox sites by adjusting the preparation process, such as using nitrogen, sulfur, supercritical CO 2 and ultralow temperature freezing during the preparation. − A comparative study on the output of GO, graphene, and CC-based electrodes in dual-chamber MFCs was conducted. The results show that the maximum output power of the graphene electrode is twice that of the CC electrode, and the graphene oxide electrode can achieve an output as high as 7.5 times.…”

Functional Nanomaterial‐Modified Anodes in Microbial Fuel Cells: Advances and Perspectives

“…[63] Similarly, iron carbide NPs were doped into S, N co-doped graphene by a straightforward pyrolysis method, which not only promoted the adhesion of microorganisms, but also further improved the conductivity of anode materials. [64] Similar to CNTs, the introduction of conductive polymers can also lead to an improved MFC performance. The PANImodified rGO composite electrode could be conducive to Geobacter adhesion on the electrode and increase the expression of c-type cytochrome OmcZ, thereby achieving the ideal power density, which was 1.9 times higher than that of the CC anode.…”

“…Compared with the CC electrode (265 mW m −2 ), the graphene quantum dots doped with S and N atoms has a synergistic function and can act as dual‐functional electrocatalysts with FeS 2 NPs to facilitate the activity towards redox reactions of cytochromes in bacteria, which delivered a maximum power density of 1128 mW m −2 [63] . Similarly, iron carbide NPs were doped into S, N co‐doped graphene by a straightforward pyrolysis method, which not only promoted the adhesion of microorganisms, but also further improved the conductivity of anode materials [64] …”

A new FeOCl/graphene quantum dot catalyst for peroxymonosulfate activation to efficiently remove organic pollutants and inactivate Escherichia coli

“…3b), the peak at 283.5 eV was the newly formed C-Fe. [39][40][41] There were three peaks with binding energies of 530.0, 531.6 and 533.3 eV in the high-resolution XPS spectra of O 1s (Fig. 3c), which corresponded to the Fe-O bonds in FeOCl and the water molecules adsorbed on the catalyst surface, respectively.…”