Contact
    Start Publications Polydopamine/polypyrrole-modified graphite felt enhances ...
    ←  Publication Finder
    Attension

    Polydopamine/polypyrrole-modified graphite felt enhances biocompatibility for electroactive bacteria and power density of microbial fuel cell

    Year: 2023

    Journal: Chemosphere, Volume 313, 2023-02-01, page 137388

    Authors: Kim, Minsoo; Li, Shuwei; Kong, Da Seul; Song, Young Eun; Park, Soo-Yong; Kim, Hyoung-il; Jae, Jungho; Chung, Ildoo; Kim, Jung Rae

    Keywords: Electrodeposition; Microbial fuel cell; Graphite felt; Polydopamine (PDA); Polypyrrole(PPY)

    The interactions between the microbes and the surface of an anode play an important role in capturing the respiratory electrons from bacteria in a microbial fuel cell (MFC). The chemical and electrochemical characteristics of the carbon material affect biofilm growth and direct electron transfer in MFCs. This study examined the electrodeposition of polydopamine (PDA) and polypyrrole (PPY) on graphite felt electrode (GF). The MFC with the modified PDA/PPY-GF reached 920 mW/m2, which was 1.5, 1.17, and 1.18 times higher than those of the GF, PDA-GF, and PPY-GF, respectively. PDA has superior hydrophilicity and adhesive force biofilm formation, while PPY provides electrochemically active sites for microbial electron transfer. Raman spectroscopy, Fourier transform infrared spectroscopy, Brunauer–Emmett–Teller surface area measurements, and contact angle analysis revealed the enhanced physicochemical properties of the carbon electrode. These results show that co-doped PDA/PPY provides a strategy for electroactive biofilm development and improves the bioelectrochemical performance in realistic MFC reactors.
    View publication