固态光电催化器件ITO/TiO_2/ITO的构型和机制

doi:10.3724/SP.J.1088.2010.00626

CORC > 北京大学 > 环境科学与工程学院

	固态光电催化器件ITO/TiO_2/ITO的构型和机制; Configuration and Mechanism of Solid-State Photoelectrocatalytic Device ITO/TiO2/ITO
	赵凤伟 ; 李静 ; 尚静 ; 汪青
刊名	催化学报
	2010
关键词	二氧化钛薄膜光电催化器件构型空穴捕获剂 titania film photoelectrocatalysis device configuration hole scavenger
DOI	10.3724/SP.J.1088.2010.00626
英文摘要	采用浸渍-提拉法将TiO2薄膜负载在具有一定电极构型的氧化铟锡(ITO)基底上,制备了全固态TiO2平面型器件(ITO/TiO2/ITO).采用扫描电镜对器件的表面形貌和膜厚进行了表征.以紫外光下器件光电协同催化降解罗丹明B(RhB)为模型反应,考察了器件的构型和空穴捕获剂(乙醇)对其光电催化性能的影响.结果表明,初始浓度为10mg/L的RhB在1.5V偏压和NaCl(1.5mol/L)为电解质的条件下,光照60min脱色率达到83%;阳极面积较大的器件光电催化性能较好,刻蚀宽度为2mm时光电催化活性最高;空穴与TiO2表面吸附的H2O氧化生成的羟基自由基对液相光电催化降解RhB起着重要作用.; A solid-state TiO2 planar device, ITO/TiO2/ITO, was prepared by immobilizing TiO2 film on indium-tin oxide (ITO) substrate with a certain electrode configuration through a dip-coating method. The surface morphology and film thickness of ITO/TiO2/ITO were characterized by scanning electron microscopy. The effects of configurations of the device and hole scavenger (ethanol) on the photoelectrocatalytic synergetic degradation of rhodamine B (RhB) were investigated over the planar device ITO/TiO2/ITO. The decoloration rate of RhB with the initial concentration of 10 mg/L reached 83% within 60 min. The ITO/TiO2/ITO device with larger photoanode area presented better photoelectrocatalytic properties, and the device with the etching width of 2 mm exhibited the highest photoelectrocatalytic activity. The hydroxyl radicals produced by the water adsorbed on TiO2 surface being oxidized by holes played an important role in liquid-phase photoelectrocatalytic degradation of RhB.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000289321900013&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; SCI(E); 中文核心期刊要目总览(PKU); 中国科技核心期刊(ISTIC); 中国科学引文数据库(CSCD); 1; 12; 1496-1500; 31
语种	中文
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/4233]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	赵凤伟,李静,尚静,等. 固态光电催化器件ITO/TiO_2/ITO的构型和机制, Configuration and Mechanism of Solid-State Photoelectrocatalytic Device ITO/TiO2/ITO[J]. 催化学报,2010.
APA	赵凤伟,李静,尚静,&汪青.(2010).固态光电催化器件ITO/TiO_2/ITO的构型和机制.催化学报.
MLA	赵凤伟,et al."固态光电催化器件ITO/TiO_2/ITO的构型和机制".催化学报 (2010).