Carbon electrodes were functionalized through the reduction of diazopyridinium cations that are produced from in situ diazotization of 2-, 3- and 4-aminopyridine. Diazopyridinium salts were much more rarely employed for surface functionalization than other aryldiazonium derivatives. A study combining X-ray Photoelectron Spectroscopy (XPS), contact angle, ellipsometry, Atomic Force Microscopy (AFM) measurements and electrochemical analyses demonstrates that films obtained from 4-diazopyridinium cations are hydrophilic, dense, compact but sufficiently thin to preserve fast electronic transfer rate, being then relevant to efficiently tailor the interface between the anode surface and an electroactive biofilm. Microbial Fuels Cells (MFCs) with pyridine-functionalized graphite anodes exhibit faster development and improved performances than MFCs operating with bare graphite anodes.

碳电极通过还原原位产生的重氮吡啶鎓阳离子而功能化2-，3-和4-氨基吡啶重氮化。与其他芳基重氮衍生物相比，重氮吡啶鎓盐很少用于表面官能化。结合X射线光电子能谱（XPS），接触角，椭圆光度法，原子力显微镜（AFM）测量和电化学分析的研究表明，由4-重氮吡啶鎓阳离子获得的薄膜具有亲水性，致密性，致密性，但足够薄以保持快速的电子转移速率，然后与有效地调整阳极表面和电活性生物膜之间的界面有关。与使用裸石墨阳极的MFC相比，具有吡啶官能化石墨阳极的微生物燃料电池（MFCs）具有更快的开发速度和更高的性能。