PbS量子点敏化TiO_2电极的光电化学性能研究  

Electrochemistry performance of PbS quantum-dot on TiO_2 electrode

作　　者：王安梅[1] 

机构地区：[1]许昌学院电气信息工程学院,许昌461000

出　　处：《化工新型材料》2015年第4期155-156,159,共3页New Chemical Materials

基　　金：河南省教育厅科学技术研究重点项目(14A140020);许昌市基础与前沿技术研究计划项目(1404007)

摘　　要：在酒精溶液中溶于铅前驱体及硫单质,采用紫外光源在TiO2纳米棒阵列上光催化沉积法生长了PbS量子点。TEM研究表明PbS量子点与TiO2结合非常好。PbS量子点的直径随着光照反应时间的增加而增大,带隙宽度则逐渐减小。进一步电化学测试结果表明,PbS量子点的光沉积生长过程为原子结合(Pbo+S→PbS)。In a mixed ethanol solution of lead perchlorate and elemental sulfur（S8） ,PbS quantum-dots were deposi- ted on TiO2 nanorod Arrays under ultraviolet light illuminated. High resolution transmission electron microscopy （HR- TEM） confirmed that the PbS quantum-dots were in good contact with TiO2. The diameter of the PbS come to be bigger as the light illuminated increased, but band gap of PbS changed to be more narrow. Photoelectrochemical measurements results indicated that the photodeposition of PbS on TiO2 preferentially proceeded via an atomic combined route（ Pb^°＋S→PbS）.

关 键 词：PBS 量子点 电化学 原子结合法 

分 类 号：O646.54[理学—物理化学]