文献类型：期刊文献

英文题名：Chemically activated graphite enhanced oxygen reduction and power output in catalyst-free microbial fuel cells

作者：Zhang, Lehua[1];Lu, Zhihao[1];Li, DongMei[1];Ma, Jingxing[2];Song, Pengfei[3];Huang, Guangtuan[1];Liu, Yongdi[1];Cai, Lankun[1]

机构：[1]E China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China;[2]Univ Libre Bruxelles, Dept Water Pollut Control STEP, Blvd Triomphe,Campus Plaine CP 208, B-1050 Brussels, Belgium;[3]Thomas Nelson Community Coll, Dept Biol, Hampton, VA 23666 USA

年份：2016

卷号：115

起止页码：332

外文期刊名：JOURNAL OF CLEANER PRODUCTION

收录：;EI(收录号：20160201782590);WOS:【SCI-EXPANDED(收录号:WOS:000371187500030)】；

基金：This work was supported by the National Natural Science Foundation of China (NSFC) (20906026), Shanghai Pujiang Program (09PJ1402900) and the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry (B200-C-0904).

语种：英文

外文关键词：Activation; Cathode; Graphite; Microbial fuel cell; Oxygen reduction reaction

摘要：In search of a cost effective cathode material for microbial fuel cells (MFCs), graphite was chemically treated with H3PO4, HNO3, ZnCl2, urea or melamine, and the effect of chemical activations on the oxygen reduction reaction (ORR) was examined. The performance of MFCs with activated graphite as the catalyst-free cathodes was then compared to those with untreated graphite. Results suggested that H3PO4 and HNO3 activations could improved ORR, showing the highest ORR activity in graphite treated with 14.62 M H3PO4 for 12 h at 30-50 degrees C. MFCs with H3PO4 and HNO3 activated graphite cathodes generated maximum power densities (7.9 W/m(3) and 6.5 W/m(3), respectively) 2.4 and 1.8 times higher than that of the untreated control. The chemical activation process involves just a simple immersion step, and it does not require heating, electrochemical process or expensive chemicals. Therefore, it is a highly cost-effective approach to improve the performance of MFCs. We recommend an in-situ modification of graphite cathodes in scale-up MFCs with either H3PO4 or HNO3 to optimize MFCs' various industrial applications. (C) 2015 Elsevier Ltd. All rights reserved.