碳纳米材料修饰阳极电极对微生物燃料电池传感器水体毒性检测灵敏度的影响  

Effect of Anode Electrode Modified with Carbon Nanomaterials of Microbial Fuel Cell-based Sensor on Detection Sensitivity of Water Toxicity

作　　者：余登斌[1] 江岚 王沛 李婷 董绍俊[1] YU Deng-Bin;JIANG Lan＊;WANG Pei;LI Ting;DONG Shao-Jun(State Key Laboratory of Electroanalytical Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China;Wuxi Environmental Monitoring Center,Wuxi 214121,China;The First Detachment Laboratory of Gold Force,Chinese People’s Armed Police Force,Mudanjiang 157000,China)

机构地区：[1]中国科学院长春应用化学研究所,电分析化学国家重点实验室,长春130022 [2]无锡市环境监测中心站,无锡214121 [3]中国人民武装警察部队黄金第一支队化验室,牡丹江157000

出　　处：《分析化学》2018年第7期1032-1038,共7页Chinese Journal of Analytical Chemistry

基　　金：国家重大科学仪器设备开发专项(No.2013YQ170585)、国家重点研发计划项目(No.2016YFA02032030)、国家自然科学基金项目(No.21675151)和吉林省与中国科学院科技合作高技术产业化专项资金项目(No.2018SYHZ0025)资助

摘　　要：微生物燃料电池(Microbial fuel cell,MFC)传感器检测水体毒性灵敏度偏低是阻碍其实际应用的瓶颈之一。本研究利用多壁碳纳米管(MWNT)和导电炭黑(GCB)修饰石墨毡(GF),作为阳极电极启动MFC传感器。考察了碳纳米材料修饰阳极电极对MFC传感器电化学性能及水体毒性检测灵敏度的影响。结果表明,GCB和MWNT修饰的电极比未修饰的电极内阻小,MFC的功率输出由大到小的顺序为:GCB/GF-MFC(2.63 W/m^2)>MWNT/GF-MFC(2.56 W/m^2)>GF-MFC(2.09 W/m^2)。以3,5-二氯苯酚(DCP)作为模型毒物进行毒性检测实验,10 mg/L DCP对3个MFC毒性传感器的平均抑制率为:MWNT/GF-MFC(31.8%)>GCB/GF-MFC(26.3%)>GF-MFC(20.1%),碳纳米材料修饰阳极电极组装MFC的毒性检测灵敏度均有所提高,MWNT/GF-MFC灵敏度最高。本研究对MFC型传感器在水污染预警中的实际应用研究提供了参考。The low sensitivity of microbial fuel cell （MFC）-biosensor is one of the bottlenecks in its practicalapplication. To investigate the effect of anode electrode modified with carbon nanomaterials on the sensitivity ofwater toxicity detection of MFC-based biosensor, graphite felts （ GF ） were modified using two carbonnanomaterials of multi-walled carbon nanotubes （ MWNT） and conductive carbon black （ GCB）. MFCbiosensors were started up with the anode electrodes, and the results showed that resistance of the GCB andMWNT-modified electrode was smaller than that of unmodified electrode, and the order of MFC power outputwas GCB / GF-MFC （2. 63 W/ m2）〉MWNT / GF-MFC （2. 56 W/ m2）〉GF-MFC （2. 09 W/ m2）. Then, 3, 5-dichlorophenol poison （DCP） was used as a model toxicant in toxicity test, the order of toxicity inhibitionratios of 10 mg / L DCP to three MFC biosensor was MWNT / GF-MFC （31. 8%） 〉GCB / GF-MFC （26. 3%） 〉GF-MFC （20. 1%）. The sensitivity for toxicity detection by MFC biosensors with anode electrode modifiedwith carbon nanomaterials was improved, and MWNT / GF-MFC had the highest sensitivity. The result of thestudy may promote the application of MFC biosensor in water pollution monitoring.

关 键 词：碳纳米材料 生物传感器 微生物燃料电池 毒性 抑制率 

分 类 号：TM911.45[电气工程—电力电子与电力传动]