School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China; National University of Singapore, Department of Civil and Environmental Engineering, Centre for Water Research, Singapore 117576, Singapore.
National University of Singapore, Department of Civil and Environmental Engineering, Centre for Water Research, Singapore 117576, Singapore.
Bioresour Technol. 2017 Nov;244(Pt 1):452-455. doi: 10.1016/j.biortech.2017.07.189. Epub 2017 Aug 4.
In this study, anthraquinone-2-sulfonate (AQS), a redox mediator, was covalently bound to conductive polypyrrole hydrogel (CPH) via electrochemical reduction of the in-situ-generated AQS diazonium salts. The porous structure and hydrophilic surface of this CPH/AQS anode enhanced biofilm formation while the AQS bound on the CPH/AQS anode worked as a redox mediator. The CPH/AQS bioanode reduced the charge transfer resistance from 28.3Ω to 4.1Ω while increased the maximum power density from 762±37mW/m to 1919±69mW/m, compared with the bare anode. These results demonstrated that the facile synthesis of the CPH/AQS anode provided an efficient route to enhance the power production of microbial fuel cell (MFC).
在这项研究中，通过原位生成的 AQS 重氮盐的电化学还原，将蒽醌-2-磺酸钠（AQS）这种氧化还原介体共价结合到导电聚吡咯水凝胶（CPH）上。CPH/AQS 阳极的多孔结构和亲水表面增强了生物膜的形成，而结合在 CPH/AQS 阳极上的 AQS 则充当氧化还原介体。与裸阳极相比，CPH/AQS 生物阳极将电荷转移电阻从 28.3Ω 降低到 4.1Ω，同时将最大功率密度从 762±37mW/m 提高到 1919±69mW/m。这些结果表明，CPH/AQS 阳极的简便合成提供了一种有效途径，可提高微生物燃料电池 (MFC) 的发电能力。
