Fe3O4-RGO为阴极催化剂的MFC处理苯酚废水研究  

Phenol Degradation in Microbial Fuel Cells with Fe_3O_4-reduced Grapheme Oxide Cathodic Catalyst

作　　者：李兴权 曹杰 刘杰[1,2] 

机构地区：[1]承德石油离等专科学校建筑系,河北承德167000 [2]哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090

出　　处：《环境科学与技术》2014年第3期58-61,共4页Environmental Science & Technology

基　　金：国家自然科学基金项目资助(51208142)

摘　　要：将Fe3O4沉积在还原石墨烯的表面成功制备了Fe3O4-RGO复合纳米材料。扫描电镜检测发现具有尖晶石结构的四氧化三铁均匀地附着在了还原石墨烯的表面。XRD衍射仪检测结果表明复合材料具有多相的结构。将Fe3O4-RGO复合纳米材料作为阴极催化剂用于单室MFC处理苯酚废水试验中,发现MFC的最大输出功率达到了0.283 W/m2,阴极内阻为151.2Ω,这表明Fe3O4-RGO复合纳米材料非常适合作为MFC的阴极催化剂。底物降解实验中发现苯酚和葡萄糖都可以作为MFC的底物进行发电,经过一定的延迟时间后均能够获得稳定的功率输出。同时,苯酚的浓度随着时间的延长逐步降低。Magnetite was deposited on grapheme to fabricate Fe3O4-RGO nanocomposites. The measurement of scanning electron microscope demonstrated that magnetite with spinel structure attached on the surface of reduced grapheme oxide without any aggregation. XRD spectrum revealed the heterogeneous structure of the nanocomposites. The nanocomposites were used as a cathodic catalyst for a microbial fuel cell （MFC） with phenol as substrate. Results indicated the output of the max power density was up to 0.283 W/m^2, while internal resistance of the cathode was 151.2Ω, which was inferred that Fe2O4-RGO nanocomposites was a suitable cathodic catalyst for MFC. Both of phenol and glucose can be used as matrix for the generation of electricity in MFC. The output of power was stable with a period of operation. Meanwhile the concentration of phenol in MFC decreased along with the extension of operation time of MFC

关 键 词：微生物燃料电池 四氧化三铁 石墨烯 阴极 苯酚 

分 类 号：X505[环境科学与工程—环境工程]