Sb-SnO_(2)/OMC电催化膜对水中大肠杆菌的去除效果

Removal Effect of E.Coil in Water by Sb-Sno_(2)/Omc Electrocatalytic Membrane

为了提高电催化膜的电催化性能,采用电沉积法,以PTFE膜为支撑,制备出Sb掺杂SnO_(2)沉积OMC的SbSnO_(2)/OMC电催化膜。利用SEM、TEM、XRD和LSV等分析手段,对Sb-SnO_(2)/OMC的结构组成及性能进行表征。结果表明,Sb-SnO_(2)粒子均匀分布在OMC表面,结合形成多个活性化学位点。当锑与锡摩尔比为0.15、电沉积电压为2.5 V、电还原时间为60 min时,制得的Sb-SnO_(2)/OMC析氧电势为1.73 V。在电压2.5 V的条件下,电催化膜连续工作5 h,对水中大肠杆菌去除率可达95.9%,这表明Sb-SnO_(2)/OMC电催化膜能很好去除水中微生物,在水处理领域有良好的应用前景。

To improve the electrocatalytic performance,Sb-SnO_(2)/OMC electrocatalytic membrane supported on PTFE was fabricated through a facile electrodeposition of Sb-doped SnO_(2)nanoparticles on OMC surface.And the microstructure and electrochemical performance of the Sb-SnO_(2)/OMC membrane were characterized by a series of techniques including TEM,XRD,and LSV,etc.The results showed that Sb-SnO_(2) particles are uniformly loaded on the surface of OMC,and contribute to abundant electrochemically active sites.When the optimum molar ratio of Sb to Sn is 0.15,the electrodeposition voltage is 2.5 V and electrodeposition time is 60 min,the prepared Sb-SnO_(2)/OMC membrane exhibits an OEP of 1.73 V.The removal rate of E.coli could reach 95.9%after continuous operation of 5 h under voltage of 2.5 V.Therefore,the excellent removal efficiency for of E.coli of for Sb-SnO_(2)/OMC indicates a great application potential in removing microorganisms in water.