多壁碳纳米管气体电极高效产过氧化氢及在氯酚处理中的应用  

MWNT gas diffusion electrode for effective production of hydrogen peroxide and its application in 4-chlorophenol treatment

作　　者：温青[1] 胡宝瑞[1] 张宝宏[1] 李旭辉 

机构地区：[1]哈尔滨工程大学材料科学与化学工程学院,黑龙江哈尔滨150001

出　　处：《现代化工》2007年第10期32-35,共4页Modern Chemical Industry

摘　　要：以多壁碳纳米管(MWNT)气体电极为阴极,石墨为阳极,构成电化学体系现场产生H2O2,建立了各参数对于H2O2产生量的拟合模型。结果表明MWNT气体电极对催化氧还原产生H2O2的能力较强,在pH值2、电流密度20 mA/cm2、曝气量1.3L/min,30 min H2O2产生量为668 mg/L。以MWNT气体电极为阴极,采用电Fenton法降解氯酚模拟废水,45 min去除率达99%。A system to produce H2O2 is built with graphite as anode and a gas diffusion electrode made in carbon nanotubes as cathode. The regression analysis is employed to set up a model for H2O2 production. When current density is 20 mA/cm^2 with 2 of pH value, 1.3 L/min of air flow, the concentration of H2O2 could reach 668 mg/L after half an hour. The treatments by electro-Fenton on 4-chlorophenol show that the degradation rate could be 99% in 45 rain in a novel electrolyte cell with the cathode of self-made gas diffusion electrode.

关 键 词：碳纳米管 气体扩散电极 星点设计 电-Fenton法 

分 类 号：TQ123.6[化学工程—无机化工] X703[环境科学与工程—环境工程]