Zhao Cui-e, Wang Wen-Jing, Sun Dong, Wang Xin, Zhang Jian-Rong, Zhu Jun-Jie
State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093 (P.R. China).
Chemistry. 2014 Jun 2;20(23):7091-7. doi: 10.1002/chem.201400272. Epub 2014 Apr 17.
A new nanostructured graphene/TiO2 (G/TiO2) hybrid was synthesized by a facile microwave-assisted solvothermal process in which amorphous TiO2 was assembled on graphene in situ. The resulting G/TiO2 hybrids were characterized by XRD, SEM, TEM, Raman spectroscopy, and N2 adsorption/desorption analysis. The electrochemical properties of the hybrids as anode materials for Shewanella-inoculated microbial fuel cells (MFCs) were studied for the first time, and they proved to be effective in improving MFC performance. The significantly improved bacterial attachment and extracellular electron-transfer efficiency could be attributed to the high specific surface area, active groups, large pore volume, and excellent conductivity of the nanostructured G/TiO2 hybrid, and this suggests that it could be a promising candidate for high-performance MFCs.
通过简便的微波辅助溶剂热法合成了一种新型的纳米结构石墨烯/二氧化钛（G/TiO₂）复合材料，其中非晶态二氧化钛原位组装在石墨烯上。通过X射线衍射（XRD）、扫描电子显微镜（SEM）、透射电子显微镜（TEM）、拉曼光谱和N₂吸附/脱附分析对所得的G/TiO₂复合材料进行了表征。首次研究了该复合材料作为接种希瓦氏菌的微生物燃料电池（MFC）阳极材料的电化学性能，结果表明它们能有效提高MFC性能。细菌附着和细胞外电子转移效率的显著提高可归因于纳米结构G/TiO₂复合材料的高比表面积、活性基团、大孔体积和优异的导电性，这表明它可能是高性能MFC的一个有前途的候选材料。
