Yuan Heyang, He Zhen
Department of Civil and Environmental Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA.
Nanoscale. 2015 Apr 28;7(16):7022-9. doi: 10.1039/c4nr05637j.
Graphene is an emerging material with superior physical and chemical properties, which can benefit the development of microbial fuel cells (MFC) in several aspects. Graphene-based anodes can enhance MFC performance with increased electron transfer efficiency, higher specific surface area and more active microbe-electrode-electrolyte interaction. For cathodic processes, oxygen reduction reaction is effectively catalyzed by graphene-based materials because of a favorable pathway and an increase in active sites and conductivity. Despite challenges, such as complexity in synthesis and property degeneration, graphene-based electrodes will be promising for developing MFCs and other bioelectrochemical systems to achieve sustainable water/wastewater treatment and bioenergy production.
石墨烯是一种具有卓越物理和化学性质的新兴材料，它能在多个方面推动微生物燃料电池（MFC）的发展。基于石墨烯的阳极可以通过提高电子转移效率、增大比表面积以及增强微生物-电极-电解质之间的相互作用来提升MFC的性能。对于阴极过程，基于石墨烯的材料能够有效催化氧还原反应，这得益于良好的反应途径、活性位点的增加以及导电性的提高。尽管存在诸如合成复杂和性能退化等挑战，但基于石墨烯的电极在开发MFC和其他生物电化学系统以实现可持续的水/废水处理及生物能源生产方面仍具有广阔前景。
