School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430062, China.
Int J Environ Res Public Health. 2023 Feb 15;20(4):3437. doi: 10.3390/ijerph20043437.
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 was further coated onto the surface of WGCM to obtain a nano-TiO/WGCM anode. The WGCM anode enhanced the maximum power density of MFCs by 167.9% compared with the carbon felt anode, while nano-TiO/WGCM anode additionally increased the value by 45.8% to achieve 1396.2 mW/m. 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 modification enhanced the enrichment of , an electricigen, by 31.0% on the anode to further improve the power production. The results demonstrated that the nano-TiO/WGCM was an effective anode for power enhancement in MFCs.
三维（3D）阳极对于高性能微生物燃料电池（MFC）至关重要。在这项研究中，通过冷冻干燥和碳化从冬瓜（WGCM）中获得了 3D 多孔碳单体。进一步在 WGCM 表面涂覆纳米 TiO，得到纳米 TiO/WGCM 阳极。与碳毡阳极相比，WGCM 阳极将 MFC 的最大功率密度提高了 167.9%，而纳米 TiO/WGCM 阳极则将该值进一步提高了 45.8%，达到 1396.2 mW/m。WGCM 的增强归因于 3D 多孔结构、良好的导电性和表面亲水性，这促进了电活性生物膜的形成和阳极电子转移。此外，纳米 TiO 修饰增强了阳极上产电菌的富集，提高了 31.0%，从而进一步提高了产电量。结果表明，纳米 TiO/WGCM 是 MFC 中增强功率的有效阳极。
