甲苯、二甲苯是工业涂装废气中O3、二次有机气溶胶生成潜势显著的一类挥发性有机物（VOCs），微生物燃料电池（MFC）具备这类VOCs污染控制及能量回收的应用潜力。针对MFC中苯类VOCs处理速率不足的瓶颈，本申请拟构造碳纳米管阵列（CNTAs）电极实现MFC中污染物界面迁移与反应的协同强化，并开展以下研究：考察CNTAs结构与生物膜生长之间的构效关系，形成CNTAs生物电极制备的优化方案；探明CNTAs吸附过程对甲苯/二甲苯相际传质促进效果，明晰界面吸附与生化反应的协同作用；研究生物电极电子传递机制及污染物降解途径，从而揭示界面反应机理；比较吸收、吸附、反应（电子传递）过程的动力学特征，确定CNTAs-MFC系统限速步骤。预计本项目的研究成果，将为苯类VOCs处理及能量回收MFC系统的开发提供理论依据，并为其实际应用提供数据支撑。

Microbial fuel cell (MFC) has application potential for pollution control and energy recovery of toluene and xylene, which are volatile organic compounds (VOCs) with remarkable O3 and secondary organic aerosols formation potentials in industrial painting waste gas. To break through the bottleneck of the treatment rate of benzene series in MFC, this project intends to construct carbon nanotube arrays (CNTAs) electrodes to enhance the interfacial transfer and reaction of VOCs in MFC. Firstly, the structure-activity relationship between the structure of CNTAs and the growth of biofilm will be investigated to optimize the preparation of CNTAs bioelectrodes. Secondly, while the effect of adsorption of toluene/xylene on CNTAs on their interfacial transfer has been proved, the synergistic effect of interface adsorption and biochemical reaction will be clarified. Thirdly, the mechanism of electron transfer in CNTAs bioelectrodes and the pathway of pollutant degradation would be studied to reveal the mechanism of interface reaction. Finally, to determine the rate-limiting step in the CNTAs-MFC, the kinetic characteristics of absorption, adsorption and reaction (electron transfer) processes will be compared. The research results of this project will provide theoretical basis for the development of MFC system for VOCs treatment and energy recovery, and provide data for its practical application.