Synthesis, Modification, and Evaluation of MXene as a Novel Anode Electrode Material for Bio-electrochemical Systems

  • PEWEE DATOO KOLUBAH (King Abdullah University of Science and Technology (KAUST) (Creator)



    Bioelectrochemical systems (BESs) show promising prospects for recovering energy and chemicals from industrial and municipal wastewater. Despite the advances in the development of this technology, there is still a significant need for efficient electrode materials with high conductivity, hydrophilicity, and good biocompatibility to boost their performance and increase productivity. In this work, metal nanoparticle-two-dimensional MXene (W2N-Ti3C2Tx and Fe-W2N-Ti3C2Tx) composite electrocatalysts were synthesized using a simple impregnation method and deposited on carbon cloth (CC) to be used as a cheap and high performing anode in BESs. The plain CC, Ti3C2Tx-CC, W2N-Ti3C2Tx-CC, and Fe-W2N-Ti3C2Tx-CC were characterized using several techniques including scanning electron microscopy, transmission electron microscopy, water contact angle, and atomic force microscopy. The prepared anodes were tested in a single chamber air cathode microbial fuel cell inoculated with industrial wastewater for power generation and wastewater treatment simultaneously. The obtained results show that carbon cloth modified with W2N-Ti3C2Tx and Fe-W2N-Ti3C2Tx exhibited improved power density of 548 mW m-2 and 327 mW/m-2 with 81% and 44%, coulombic efficiency, respectively. The obtained power densities were 6 and 3.7 times higher, respectively than that achieved for pure carbon cloth (88 mW m-2). This study demonstrates the potential of combining two-dimensional MXene with metal nanoparticles to form an active composite anode catalyst for enhancing power generation and wastewater treatment using microbial fuel cells.
    Date made available2022
    PublisherKAUST Research Repository

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