摘要
在氟化铵和乙二醇水溶液的电解液中,以钛片为阳极、铂片为阴极,通过阳极氧化法制备得到三维立体网状结构TiO_(2)纳米电极。利用X射线衍射(XRD)、扫描电镜(SEM)、X射线能谱(EDS)和光电子能谱仪(XPS)等技术对其结构进行表征,在外加电压和紫外光照射条件下,测试其光电催化性能。实验结果表明,阳极氧化法制备出的三维立体网状TiO_(2)晶型为锐钛矿相,该电极在外加电场作用下,可加速光生电子和光生空穴的分离效率,能较好氧化还原性物质,适合于测定化学需氧量1000 mg/L以内的水样。
A TiO_(2)nanoelectrode with 3D interconnected network structure is prepared by anodic oxidation method in the electrolyte of ammonium fluoride and ethylene glycol aqueous solution.The samples structure are characterized by X-ray diffractometer(XRD),scanning electron microscopy(SEM),energy dispersive X-ray spectrometry(EDS)and photoemission spectrometer.Under applied voltage and UV light irradiation to test its photoelectrocatalytic-performance.Experimental results show that TiO_(2)crystal type with 3D interconnected network prepared by anodic oxidation method is anatase.The electrode can accelerate the separation efficiency of photo-generated electrons and photogenerated-generated hole under applied electric field,and can oxidize reducing substance better,it is suitable for measuring water samples whose chemical oxygen demand is within 1000 mg/L.
作者
宋燚
彭英
邱会东
SONG Yi;PENG Ying;QIU Huidong(School of Chemistry and Chemical Engineering,Chongqing University of Science and Technology,Chongqing 401331,China;Chongqing Taike Environmental Protection Technology Co Ltd,Chongqing 404100,China)
出处
《传感器与微系统》
北大核心
2025年第6期165-168,共4页
Transducer and Microsystem Technologies
关键词
二氧化钛纳米电极
光电催化反应
化学需氧量
TiO_(2)nanoelectrode
photoelectriccatalytic reaction
chemical oxygen demand
作者简介
宋燚(2000-),女,硕士研究生,研究方向为分析化学;通讯作者:邱会东(1975-),男,教授,主要从事分析化学的教学与研究工作。
