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Three-Dimensional Carbon Monolith Coated by Nano-TiO 2 for Anode Enhancement in Microbial Fuel Cells

Author

Listed:
  • Fan Zhao

    (School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430062, China)

  • Yini Chen

    (School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430062, China)

  • Shiyang Zhang

    (School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430062, China)

  • Meng Li

    (School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430062, China)

  • Xinhua Tang

    (School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430062, China)

Abstract

A three-dimensional (3D) anode is essential for high-performance microbial fuel cells (MFCs). In this study, 3D porous carbon monoliths from a wax gourd (WGCM) were obtained by freeze-drying and carbonization. Nano-TiO 2 was further coated onto the surface of WGCM to obtain a nano-TiO 2 /WGCM anode. The WGCM anode enhanced the maximum power density of MFCs by 167.9% compared with the carbon felt anode, while nano-TiO 2 /WGCM anode additionally increased the value by 45.8% to achieve 1396.2 mW/m 2 . WGCM enhancement was due to the 3D porous structure, the good conductivity and the surface hydrophilicity, which enhanced electroactive biofilm formation and anodic electron transfer. In addition, nano-TiO 2 modification enhanced the enrichment of Acinetobacter , an electricigen, by 31.0% on the anode to further improve the power production. The results demonstrated that the nano-TiO 2 /WGCM was an effective anode for power enhancement in MFCs.

Suggested Citation

  • Fan Zhao & Yini Chen & Shiyang Zhang & Meng Li & Xinhua Tang, 2023. "Three-Dimensional Carbon Monolith Coated by Nano-TiO 2 for Anode Enhancement in Microbial Fuel Cells," IJERPH, MDPI, vol. 20(4), pages 1-14, February.
    • Handle: RePEc:gam:jijerp:v:20:y:2023:i:4:p:3437-:d:1069876
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    References listed on IDEAS

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    1. Sami G. A. Flimban & Iqbal M. I. Ismail & Taeyoung Kim & Sang-Eun Oh, 2019. "Overview of Recent Advancements in the Microbial Fuel Cell from Fundamentals to Applications: Design, Major Elements, and Scalability," Energies, MDPI, vol. 12(17), pages 1-20, September.
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