Qiao Yan, Bao Shu-Juan, Li Chang Ming, Cui Xiao-Qiang, Lu Zhi-Song, Guo Jun
School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457.
ACS Nano. 2008 Jan;2(1):113-9. doi: 10.1021/nn700102s.
A unique nanostructured polyaniline (PANI)/mesoporous TiO(2) composite was synthesized and explored as an anode in Escherichia coli microbial fuel cells (MFCs). The results of X-ray diffraction, morphology, and nitrogen adsorption-desorption studies demonstrate a networked nanostructure with uniform nanopore distribution and high specific surface area of the composite. The composite MFC anode was fabricated and its catalytic behavior investigated. Optimization of the anode shows that the composite with 30 wt % PANI gives the best bio- and electrocatalytic performance. A possible mechanism to explain the excellent performance is proposed. In comparison to previously reported work with E. coli MFCs, the composite anode delivers 2-fold higher power density (1495 mW/m(2)). Thus, it has great potential to be used as the anode for a high-power MFC and may also provide a new universal approach for improving different types of MFCs.
合成了一种独特的纳米结构聚苯胺（PANI）/介孔TiO₂复合材料，并将其作为阳极应用于大肠杆菌微生物燃料电池（MFC）中进行研究。X射线衍射、形貌和氮吸附-脱附研究结果表明，该复合材料具有网络状纳米结构，纳米孔分布均匀，比表面积高。制备了复合MFC阳极并研究了其催化行为。阳极优化结果表明，含30 wt% PANI的复合材料具有最佳的生物和电催化性能。提出了一种解释其优异性能的可能机制。与先前报道的大肠杆菌MFC研究相比，复合阳极的功率密度提高了2倍（1495 mW/m²）。因此，它具有作为高功率MFC阳极的巨大潜力，也可能为改进不同类型的MFC提供一种新的通用方法。
